Annotations: 9MBZ

Cryo-EM structure of human FcRL4 bound to IgA-Fc/J

External Resource: Annotation

Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A [auth F]	Interleukin-2,Fc receptor-like protein 4	molecular function activator activity molecular function regulator activity signaling receptor regulator activity growth factor activity receptor ligand activity signaling receptor activator activity enzyme regulator activity kinase activator activity enzyme activator activity kinase regulator activity protein binding binding kappa-type opioid receptor binding signaling receptor binding molecular function activator activity molecular function regulator activity signaling receptor regulator activity growth factor activity receptor ligand activity signaling receptor activator activity enzyme regulator activity kinase activator activity enzyme activator activity kinase regulator activity protein binding binding kappa-type opioid receptor binding signaling receptor binding G protein-coupled receptor binding opioid receptor binding cytokine receptor binding growth factor receptor binding interleukin-2 receptor binding glycosphingolipid binding sphingolipid binding lipid binding glycolipid binding carbohydrate derivative binding carbohydrate binding cytokine activity molecular transducer activity transmembrane signaling receptor activity signaling receptor activity	adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains response to stimulus regulation of leukocyte activation regulation of cell activation B cell activation involved in immune response positive regulation of macromolecule biosynthetic process regulation of primary metabolic process multicellular organism development positive regulation of immune response regulation of immune system process positive regulation of macromolecule metabolic process system development positive regulation of DNA recombination positive regulation of immunoglobulin mediated immune response adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains response to stimulus regulation of leukocyte activation regulation of cell activation B cell activation involved in immune response positive regulation of macromolecule biosynthetic process regulation of primary metabolic process multicellular organism development positive regulation of immune response regulation of immune system process positive regulation of macromolecule metabolic process system development positive regulation of DNA recombination positive regulation of immunoglobulin mediated immune response immune response DNA recombination primary metabolic process DNA metabolic process immune effector process regulation of gene expression biosynthetic process positive regulation of DNA metabolic process regulation of response to stimulus B cell mediated immunity positive regulation of production of molecular mediator of immune response regulation of macromolecule biosynthetic process metabolic process regulation of DNA metabolic process immunoglobulin production regulation of developmental process positive regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains somatic cell DNA recombination somatic diversification of immunoglobulins involved in immune response positive regulation of lymphocyte activation somatic recombination of immunoglobulin gene segments positive regulation of biosynthetic process regulation of immunoglobulin mediated immune response regulation of B cell activation leukocyte activation involved in immune response positive regulation of isotype switching positive regulation of immune effector process positive regulation of cellular process production of molecular mediator of immune response positive regulation of immunoglobulin production regulation of isotype switching cell activation regulation of macromolecule metabolic process macromolecule biosynthetic process nucleic acid metabolic process positive regulation of gene expression immune system process somatic diversification of immune receptors via germline recombination within a single locus cellular process regulation of lymphocyte activation lymphocyte mediated immunity regulation of immune effector process multicellular organismal process regulation of DNA recombination positive regulation of leukocyte mediated immunity regulation of cellular process cell activation involved in immune response nucleobase-containing compound metabolic process positive regulation of developmental process positive regulation of cell activation positive regulation of metabolic process anatomical structure development positive regulation of leukocyte activation leukocyte mediated immunity somatic diversification of immune receptors regulation of nucleobase-containing compound metabolic process positive regulation of adaptive immune response positive regulation of immune system process somatic recombination of immunoglobulin genes involved in immune response developmental process regulation of biological process regulation of adaptive immune response regulation of B cell mediated immunity somatic diversification of immunoglobulins regulation of leukocyte mediated immunity regulation of immune response positive regulation of multicellular organismal process regulation of production of molecular mediator of immune response macromolecule metabolic process regulation of metabolic process isotype switching immune system development immunoglobulin production involved in immunoglobulin-mediated immune response positive regulation of lymphocyte mediated immunity positive regulation of biological process lymphocyte activation positive regulation of B cell mediated immunity leukocyte activation positive regulation of response to stimulus regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains positive regulation of isotype switching to IgG isotypes regulation of multicellular organismal process lymphocyte activation involved in immune response regulation of biosynthetic process B cell activation biological regulation gene expression adaptive immune response immunoglobulin mediated immune response positive regulation of B cell activation regulation of isotype switching to IgG isotypes regulation of lymphocyte mediated immunity regulation of immunoglobulin production isotype switching to IgG isotypes regulation of defense response regulation of response to external stimulus defense response response to external stimulus regulation of inflammatory response positive regulation of response to external stimulus positive regulation of inflammatory response regulation of response to stress response to stress positive regulation of defense response inflammatory response cellular response to stimulus cell surface receptor signaling pathway via STAT cell surface receptor signaling pathway signaling cell communication signal transduction cell-cell signaling regulation of leukocyte differentiation mononuclear cell differentiation regulation of cell differentiation mature B cell differentiation positive regulation of B cell differentiation lymphocyte differentiation regulation of cell development regulation of plasma cell differentiation cell differentiation positive regulation of cell development positive regulation of plasma cell differentiation plasma cell differentiation leukocyte differentiation cellular developmental process cell development regulation of B cell differentiation B cell differentiation positive regulation of hemopoiesis positive regulation of cell differentiation regulation of lymphocyte differentiation regulation of multicellular organismal development mature B cell differentiation involved in immune response hemopoiesis regulation of hemopoiesis positive regulation of leukocyte differentiation positive regulation of lymphocyte differentiation cell projection organization positive regulation of dendritic spine development regulation of dendritic spine development neuron projection development cellular component organization neurogenesis neuron differentiation dendrite development cellular component organization or biogenesis dendritic spine development plasma membrane bounded cell projection organization nervous system development generation of neurons neuron development T cell activation T cell differentiation signal transduction in absence of ligand cell death extrinsic apoptotic signaling pathway apoptotic signaling pathway extrinsic apoptotic signaling pathway in absence of ligand apoptotic process programmed cell death positive regulation of tissue remodeling tissue remodeling regulation of tissue remodeling natural killer cell activation phospholipase C-activating G protein-coupled receptor signaling pathway G protein-coupled receptor signaling pathway cell adhesion homeostatic process T cell homeostatic proliferation leukocyte proliferation T cell homeostasis lymphocyte proliferation T cell proliferation regulation of lymphocyte proliferation regulation of leukocyte proliferation cell population proliferation regulation of T cell activation regulation of T cell proliferation multicellular organismal-level homeostasis regulation of T cell homeostatic proliferation leukocyte homeostasis regulation of cell population proliferation mononuclear cell proliferation regulation of mononuclear cell proliferation homeostasis of number of cells lymphocyte homeostasis positive regulation of cell population proliferation positive regulation of B cell proliferation regulation of B cell proliferation positive regulation of mononuclear cell proliferation positive regulation of lymphocyte proliferation B cell proliferation positive regulation of leukocyte proliferation positive regulation of DNA-templated transcription RNA metabolic process RNA biosynthetic process nucleic acid biosynthetic process DNA-templated transcription regulation of RNA metabolic process transcription by RNA polymerase II regulation of RNA biosynthetic process regulation of transcription by RNA polymerase II positive regulation of transcription by RNA polymerase II nucleobase-containing compound biosynthetic process positive regulation of RNA metabolic process positive regulation of RNA biosynthetic process regulation of DNA-templated transcription regulation of leukocyte apoptotic process regulation of lymphocyte apoptotic process regulation of B cell apoptotic process negative regulation of programmed cell death leukocyte apoptotic process regulation of apoptotic process negative regulation of biological process B cell apoptotic process regulation of programmed cell death negative regulation of B cell apoptotic process lymphocyte apoptotic process negative regulation of apoptotic process negative regulation of leukocyte apoptotic process negative regulation of cellular process negative regulation of lymphocyte apoptotic process regulation of growth regulation of cellular component organization growth positive regulation of cell growth regulation of cell growth cell growth positive regulation of growth positive regulation of cytosolic calcium ion concentration regulation of biological quality regulation of alpha-beta T cell activation regulation of alpha-beta T cell proliferation alpha-beta T cell proliferation CD4-positive, alpha-beta T cell activation alpha-beta T cell activation CD4-positive, alpha-beta T cell proliferation regulation of CD4-positive, alpha-beta T cell proliferation regulation of CD4-positive, alpha-beta T cell activation interleukin-2-mediated signaling pathway cellular response to interleukin-2 response to cytokine cytokine-mediated signaling pathway response to peptide response to interleukin-2 response to chemical cellular response to cytokine stimulus positive regulation of T cell differentiation positive regulation of T cell activation positive regulation of regulatory T cell differentiation regulation of leukocyte cell-cell adhesion positive regulation of leukocyte cell-cell adhesion leukocyte cell-cell adhesion positive regulation of cell-cell adhesion regulation of T cell differentiation cell-cell adhesion regulation of cell-cell adhesion positive regulation of cell adhesion regulation of cell adhesion regulation of regulatory T cell differentiation regulatory T cell differentiation negative regulation of inflammatory response negative regulation of response to stimulus negative regulation of response to external stimulus negative regulation of defense response response to alcohol response to oxygen-containing compound response to ethanol negative regulation of lymphocyte proliferation negative regulation of lymphocyte activation negative regulation of mononuclear cell proliferation negative regulation of leukocyte proliferation negative regulation of cell population proliferation negative regulation of cell activation negative regulation of immune system process negative regulation of multicellular organismal process negative regulation of leukocyte activation positive regulation of T cell proliferation positive regulation of activated T cell proliferation regulation of activated T cell proliferation activated T cell proliferation response to tacrolimus response to nitrogen compound cytokine production regulation of cytokine production interleukin-17 production regulation of interleukin-17 production positive regulation of interleukin-17 production positive regulation of cytokine production negative regulation of cell adhesion negative regulation of T cell differentiation regulation of T-helper cell differentiation T-helper cell differentiation negative regulation of leukocyte differentiation negative regulation of immune effector process negative regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains negative regulation of T cell activation negative regulation of leukocyte cell-cell adhesion negative regulation of cell-cell adhesion T-helper 17 cell differentiation negative regulation of T-helper 17 cell differentiation CD4-positive, alpha-beta T cell differentiation alpha-beta T cell differentiation T cell activation involved in immune response negative regulation of cell differentiation regulation of T-helper 17 cell differentiation negative regulation of developmental process negative regulation of T-helper 17 type immune response negative regulation of cell development negative regulation of alpha-beta T cell activation negative regulation of hemopoiesis negative regulation of immune response negative regulation of adaptive immune response negative regulation of CD4-positive, alpha-beta T cell activation negative regulation of lymphocyte differentiation negative regulation of CD4-positive, alpha-beta T cell differentiation regulation of CD4-positive, alpha-beta T cell differentiation regulation of alpha-beta T cell differentiation negative regulation of alpha-beta T cell differentiation alpha-beta T cell activation involved in immune response regulation of T-helper 17 type immune response T cell differentiation involved in immune response negative regulation of T-helper cell differentiation T-helper 17 type immune response regulation of type II interferon production type II interferon production positive regulation of type II interferon production	cellular anatomical structure extracellular region cell periphery cell surface membrane plasma membrane external side of plasma membrane side of membrane
B [auth A], C [auth B], D [auth C], E [auth D]	Interleukin-2,Isoform 1 of Immunoglobulin heavy constant alpha 1	molecular function activator activity molecular function regulator activity signaling receptor regulator activity growth factor activity receptor ligand activity signaling receptor activator activity enzyme regulator activity kinase activator activity enzyme activator activity kinase regulator activity protein binding binding kappa-type opioid receptor binding signaling receptor binding molecular function activator activity molecular function regulator activity signaling receptor regulator activity growth factor activity receptor ligand activity signaling receptor activator activity enzyme regulator activity kinase activator activity enzyme activator activity kinase regulator activity protein binding binding kappa-type opioid receptor binding signaling receptor binding G protein-coupled receptor binding opioid receptor binding cytokine receptor binding growth factor receptor binding interleukin-2 receptor binding glycosphingolipid binding sphingolipid binding lipid binding glycolipid binding carbohydrate derivative binding carbohydrate binding cytokine activity antigen binding	adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains response to stimulus regulation of leukocyte activation regulation of cell activation B cell activation involved in immune response positive regulation of macromolecule biosynthetic process regulation of primary metabolic process multicellular organism development positive regulation of immune response regulation of immune system process positive regulation of macromolecule metabolic process system development positive regulation of DNA recombination positive regulation of immunoglobulin mediated immune response adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains response to stimulus regulation of leukocyte activation regulation of cell activation B cell activation involved in immune response positive regulation of macromolecule biosynthetic process regulation of primary metabolic process multicellular organism development positive regulation of immune response regulation of immune system process positive regulation of macromolecule metabolic process system development positive regulation of DNA recombination positive regulation of immunoglobulin mediated immune response immune response DNA recombination primary metabolic process DNA metabolic process immune effector process regulation of gene expression biosynthetic process positive regulation of DNA metabolic process regulation of response to stimulus B cell mediated immunity positive regulation of production of molecular mediator of immune response regulation of macromolecule biosynthetic process metabolic process regulation of DNA metabolic process immunoglobulin production regulation of developmental process positive regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains somatic cell DNA recombination somatic diversification of immunoglobulins involved in immune response positive regulation of lymphocyte activation somatic recombination of immunoglobulin gene segments positive regulation of biosynthetic process regulation of immunoglobulin mediated immune response regulation of B cell activation leukocyte activation involved in immune response positive regulation of isotype switching positive regulation of immune effector process positive regulation of cellular process production of molecular mediator of immune response positive regulation of immunoglobulin production regulation of isotype switching cell activation regulation of macromolecule metabolic process macromolecule biosynthetic process nucleic acid metabolic process positive regulation of gene expression immune system process somatic diversification of immune receptors via germline recombination within a single locus cellular process regulation of lymphocyte activation lymphocyte mediated immunity regulation of immune effector process multicellular organismal process regulation of DNA recombination positive regulation of leukocyte mediated immunity regulation of cellular process cell activation involved in immune response nucleobase-containing compound metabolic process positive regulation of developmental process positive regulation of cell activation positive regulation of metabolic process anatomical structure development positive regulation of leukocyte activation leukocyte mediated immunity somatic diversification of immune receptors regulation of nucleobase-containing compound metabolic process positive regulation of adaptive immune response positive regulation of immune system process somatic recombination of immunoglobulin genes involved in immune response developmental process regulation of biological process regulation of adaptive immune response regulation of B cell mediated immunity somatic diversification of immunoglobulins regulation of leukocyte mediated immunity regulation of immune response positive regulation of multicellular organismal process regulation of production of molecular mediator of immune response macromolecule metabolic process regulation of metabolic process isotype switching immune system development immunoglobulin production involved in immunoglobulin-mediated immune response positive regulation of lymphocyte mediated immunity positive regulation of biological process lymphocyte activation positive regulation of B cell mediated immunity leukocyte activation positive regulation of response to stimulus regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains positive regulation of isotype switching to IgG isotypes regulation of multicellular organismal process lymphocyte activation involved in immune response regulation of biosynthetic process B cell activation biological regulation gene expression adaptive immune response immunoglobulin mediated immune response positive regulation of B cell activation regulation of isotype switching to IgG isotypes regulation of lymphocyte mediated immunity regulation of immunoglobulin production isotype switching to IgG isotypes regulation of defense response regulation of response to external stimulus defense response response to external stimulus regulation of inflammatory response positive regulation of response to external stimulus positive regulation of inflammatory response regulation of response to stress response to stress positive regulation of defense response inflammatory response cellular response to stimulus cell surface receptor signaling pathway via STAT cell surface receptor signaling pathway signaling cell communication signal transduction cell-cell signaling regulation of leukocyte differentiation mononuclear cell differentiation regulation of cell differentiation mature B cell differentiation positive regulation of B cell differentiation lymphocyte differentiation regulation of cell development regulation of plasma cell differentiation cell differentiation positive regulation of cell development positive regulation of plasma cell differentiation plasma cell differentiation leukocyte differentiation cellular developmental process cell development regulation of B cell differentiation B cell differentiation positive regulation of hemopoiesis positive regulation of cell differentiation regulation of lymphocyte differentiation regulation of multicellular organismal development mature B cell differentiation involved in immune response hemopoiesis regulation of hemopoiesis positive regulation of leukocyte differentiation positive regulation of lymphocyte differentiation cell projection organization positive regulation of dendritic spine development regulation of dendritic spine development neuron projection development cellular component organization neurogenesis neuron differentiation dendrite development cellular component organization or biogenesis dendritic spine development plasma membrane bounded cell projection organization nervous system development generation of neurons neuron development T cell activation T cell differentiation signal transduction in absence of ligand cell death extrinsic apoptotic signaling pathway apoptotic signaling pathway extrinsic apoptotic signaling pathway in absence of ligand apoptotic process programmed cell death positive regulation of tissue remodeling tissue remodeling regulation of tissue remodeling natural killer cell activation phospholipase C-activating G protein-coupled receptor signaling pathway G protein-coupled receptor signaling pathway cell adhesion homeostatic process T cell homeostatic proliferation leukocyte proliferation T cell homeostasis lymphocyte proliferation T cell proliferation regulation of lymphocyte proliferation regulation of leukocyte proliferation cell population proliferation regulation of T cell activation regulation of T cell proliferation multicellular organismal-level homeostasis regulation of T cell homeostatic proliferation leukocyte homeostasis regulation of cell population proliferation mononuclear cell proliferation regulation of mononuclear cell proliferation homeostasis of number of cells lymphocyte homeostasis positive regulation of cell population proliferation positive regulation of B cell proliferation regulation of B cell proliferation positive regulation of mononuclear cell proliferation positive regulation of lymphocyte proliferation B cell proliferation positive regulation of leukocyte proliferation positive regulation of DNA-templated transcription RNA metabolic process RNA biosynthetic process nucleic acid biosynthetic process DNA-templated transcription regulation of RNA metabolic process transcription by RNA polymerase II regulation of RNA biosynthetic process regulation of transcription by RNA polymerase II positive regulation of transcription by RNA polymerase II nucleobase-containing compound biosynthetic process positive regulation of RNA metabolic process positive regulation of RNA biosynthetic process regulation of DNA-templated transcription regulation of leukocyte apoptotic process regulation of lymphocyte apoptotic process regulation of B cell apoptotic process negative regulation of programmed cell death leukocyte apoptotic process regulation of apoptotic process negative regulation of biological process B cell apoptotic process regulation of programmed cell death negative regulation of B cell apoptotic process lymphocyte apoptotic process negative regulation of apoptotic process negative regulation of leukocyte apoptotic process negative regulation of cellular process negative regulation of lymphocyte apoptotic process regulation of growth regulation of cellular component organization growth positive regulation of cell growth regulation of cell growth cell growth positive regulation of growth positive regulation of cytosolic calcium ion concentration regulation of biological quality regulation of alpha-beta T cell activation regulation of alpha-beta T cell proliferation alpha-beta T cell proliferation CD4-positive, alpha-beta T cell activation alpha-beta T cell activation CD4-positive, alpha-beta T cell proliferation regulation of CD4-positive, alpha-beta T cell proliferation regulation of CD4-positive, alpha-beta T cell activation interleukin-2-mediated signaling pathway cellular response to interleukin-2 response to cytokine cytokine-mediated signaling pathway response to peptide response to interleukin-2 response to chemical cellular response to cytokine stimulus positive regulation of T cell differentiation positive regulation of T cell activation positive regulation of regulatory T cell differentiation regulation of leukocyte cell-cell adhesion positive regulation of leukocyte cell-cell adhesion leukocyte cell-cell adhesion positive regulation of cell-cell adhesion regulation of T cell differentiation cell-cell adhesion regulation of cell-cell adhesion positive regulation of cell adhesion regulation of cell adhesion regulation of regulatory T cell differentiation regulatory T cell differentiation negative regulation of inflammatory response negative regulation of response to stimulus negative regulation of response to external stimulus negative regulation of defense response response to alcohol response to oxygen-containing compound response to ethanol negative regulation of lymphocyte proliferation negative regulation of lymphocyte activation negative regulation of mononuclear cell proliferation negative regulation of leukocyte proliferation negative regulation of cell population proliferation negative regulation of cell activation negative regulation of immune system process negative regulation of multicellular organismal process negative regulation of leukocyte activation positive regulation of T cell proliferation positive regulation of activated T cell proliferation regulation of activated T cell proliferation activated T cell proliferation response to tacrolimus response to nitrogen compound cytokine production regulation of cytokine production interleukin-17 production regulation of interleukin-17 production positive regulation of interleukin-17 production positive regulation of cytokine production negative regulation of cell adhesion negative regulation of T cell differentiation regulation of T-helper cell differentiation T-helper cell differentiation negative regulation of leukocyte differentiation negative regulation of immune effector process negative regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains negative regulation of T cell activation negative regulation of leukocyte cell-cell adhesion negative regulation of cell-cell adhesion T-helper 17 cell differentiation negative regulation of T-helper 17 cell differentiation CD4-positive, alpha-beta T cell differentiation alpha-beta T cell differentiation T cell activation involved in immune response negative regulation of cell differentiation regulation of T-helper 17 cell differentiation negative regulation of developmental process negative regulation of T-helper 17 type immune response negative regulation of cell development negative regulation of alpha-beta T cell activation negative regulation of hemopoiesis negative regulation of immune response negative regulation of adaptive immune response negative regulation of CD4-positive, alpha-beta T cell activation negative regulation of lymphocyte differentiation negative regulation of CD4-positive, alpha-beta T cell differentiation regulation of CD4-positive, alpha-beta T cell differentiation regulation of alpha-beta T cell differentiation negative regulation of alpha-beta T cell differentiation alpha-beta T cell activation involved in immune response regulation of T-helper 17 type immune response T cell differentiation involved in immune response negative regulation of T-helper cell differentiation T-helper 17 type immune response regulation of type II interferon production type II interferon production positive regulation of type II interferon production immune response-regulating cell surface receptor signaling pathway immune response-activating signaling pathway immune response-regulating signaling pathway immune response-activating cell surface receptor signaling pathway B cell receptor signaling pathway antigen receptor-mediated signaling pathway activation of immune response humoral immune response complement activation humoral immune response mediated by circulating immunoglobulin complement activation, classical pathway biological process involved in interspecies interaction between organisms response to other organism antibacterial humoral response defense response to symbiont antimicrobial humoral response response to biotic stimulus defense response to bacterium defense response to other organism response to bacterium response to external biotic stimulus renal system process system process glomerular filtration renal filtration positive regulation of respiratory burst respiratory burst regulation of respiratory burst	cellular anatomical structure extracellular region protein-containing complex IgA immunoglobulin complex immunoglobulin complex IgA immunoglobulin complex, circulating secretory IgA immunoglobulin complex extracellular protein-containing complex polymeric IgA immunoglobulin complex immunoglobulin complex, circulating extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle cellular anatomical structure extracellular region protein-containing complex IgA immunoglobulin complex immunoglobulin complex IgA immunoglobulin complex, circulating secretory IgA immunoglobulin complex extracellular protein-containing complex polymeric IgA immunoglobulin complex immunoglobulin complex, circulating extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle organelle vesicle extracellular membrane-bounded organelle cell periphery plasma membrane membrane dimeric IgA immunoglobulin complex secretory dimeric IgA immunoglobulin complex IgG immunoglobulin complex blood microparticle monomeric IgA immunoglobulin complex
F [auth J]	Immunoglobulin J chain	identical protein binding protein binding binding protein homodimerization activity protein dimerization activity protein-containing complex binding immunoglobulin binding IgA binding signaling receptor binding immunoglobulin receptor binding protein-macromolecule adaptor activity molecular adaptor activity antigen binding	cellular component organization cellular component biogenesis cellular component assembly protein-containing complex organization protein-containing complex assembly cellular process cellular component organization or biogenesis regulation of biological process positive regulation of respiratory burst regulation of cellular process biological regulation positive regulation of biological process positive regulation of metabolic process respiratory burst cellular component organization cellular component biogenesis cellular component assembly protein-containing complex organization protein-containing complex assembly cellular process cellular component organization or biogenesis regulation of biological process positive regulation of respiratory burst regulation of cellular process biological regulation positive regulation of biological process positive regulation of metabolic process respiratory burst metabolic process regulation of respiratory burst regulation of metabolic process positive regulation of cellular process response to stimulus immune response immune system process adaptive immune response humoral immune response biological process involved in interspecies interaction between organisms response to other organism defense response antibacterial humoral response defense response to symbiont response to external stimulus antimicrobial humoral response response to biotic stimulus defense response to bacterium defense response to other organism response to stress response to bacterium response to external biotic stimulus innate immune response multicellular organismal process renal system process system process glomerular filtration renal filtration	cellular anatomical structure extracellular region blood microparticle IgA immunoglobulin complex, circulating dimeric IgA immunoglobulin complex protein-containing complex IgA immunoglobulin complex extracellular protein-containing complex polymeric IgA immunoglobulin complex immunoglobulin complex, circulating immunoglobulin complex secretory IgA immunoglobulin complex extracellular exosome membrane-bounded organelle cellular anatomical structure extracellular region blood microparticle IgA immunoglobulin complex, circulating dimeric IgA immunoglobulin complex protein-containing complex IgA immunoglobulin complex extracellular protein-containing complex polymeric IgA immunoglobulin complex immunoglobulin complex, circulating immunoglobulin complex secretory IgA immunoglobulin complex extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle organelle vesicle extracellular membrane-bounded organelle monomeric IgA immunoglobulin complex IgM immunoglobulin complex IgM immunoglobulin complex, circulating pentameric IgM immunoglobulin complex secretory dimeric IgA immunoglobulin complex

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A [auth F]	IPR000779	Interleukin-2	Family
A [auth F]	IPR030477	Interleukin-2, conserved site	Conserved Site
A [auth F]	IPR009079	Four-helical cytokine-like, core	Homologous Superfamily
A [auth F]	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
A [auth F]	IPR003598	Immunoglobulin subtype 2	Domain
A [auth F]	IPR050488	Immunoglobulin Fc region receptor	Family
A [auth F]	IPR013151	Immunoglobulin-like beta-sandwich domain	Domain
A [auth F]	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A [auth F]	IPR003599	Immunoglobulin domain subtype	Domain
A [auth F]	IPR007110	Immunoglobulin-like domain	Domain
B [auth A], C [auth B], D [auth C], E [auth D]	IPR000779	Interleukin-2	Family
B [auth A], C [auth B], D [auth C], E [auth D]	IPR030477	Interleukin-2, conserved site	Conserved Site
B [auth A], C [auth B], D [auth C], E [auth D]	IPR009079	Four-helical cytokine-like, core	Homologous Superfamily
B [auth A], C [auth B], D [auth C], E [auth D]	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
B [auth A], C [auth B], D [auth C], E [auth D]	IPR003597	Immunoglobulin C1-set	Domain
B [auth A], C [auth B], D [auth C], E [auth D]	IPR003006	Immunoglobulin/major histocompatibility complex, conserved site	Conserved Site
B [auth A], C [auth B], D [auth C], E [auth D]	IPR013151	Immunoglobulin-like beta-sandwich domain	Domain
B [auth A], C [auth B], D [auth C], E [auth D]	IPR050380	Immune Recognition and Response Modulators	Family
B [auth A], C [auth B], D [auth C], E [auth D]	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
B [auth A], C [auth B], D [auth C], E [auth D]	IPR007110	Immunoglobulin-like domain	Domain
F [auth J]	IPR024110	Immunoglobulin J chain	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A [auth F]	: Q96PJ5	cancer leukopenia glomerulonephritis autoimmune hepatitis adult T-cell leukemia/lymphoma glioblastoma melanoma nephrotic syndrome Neoplasms, Experimental allergic contact dermatitis dissociative amnesia alopecia areata rheumatoid arthritis giant cell glioblastoma liver cancer cancer leukopenia glomerulonephritis autoimmune hepatitis adult T-cell leukemia/lymphoma glioblastoma melanoma nephrotic syndrome Neoplasms, Experimental allergic contact dermatitis dissociative amnesia alopecia areata rheumatoid arthritis giant cell glioblastoma liver cancer anemia leukemia prostate cancer AIDS major depressive disorder HIV infectious disease asthma urinary bladder cancer autoimmune disease neutropenia influenza paranoid schizophrenia kidney disease pneumonia adult acute respiratory distress syndrome COVID-19 liver neoplasm lymphatic system disease arthritic joint disease autism urinary bladder neoplasm inborn carbohydrate metabolic disorder brain cancer brain injury juvenile idiopathic arthritis peripheral nervous system disease kidney neoplasm cutaneous melanoma lung benign neoplasm allergic disease lymphopenia schizophrenia systemic lupus erythematosus tuberculosis vaginal cancer hypotensive disorder benign neoplasm inflammatory bowel disease kidney cancer peripheral neuropathy breast disease acute T cell leukemia celiac disease liver disease diarrheal disease allergic rhinitis endogenous depression amnestic disorder skin disease IgA glomerulonephritis osteosarcoma primary biliary cholangitis interstitial cystitis ovarian cancer psoriasis nasopharyngeal carcinoma plasma cell myeloma Sjogren syndrome
B [auth A], C [auth B], D [auth C], E [auth D]	: P01876	cancer leukopenia glomerulonephritis autoimmune hepatitis adult T-cell leukemia/lymphoma glioblastoma melanoma nephrotic syndrome Neoplasms, Experimental allergic contact dermatitis dissociative amnesia alopecia areata rheumatoid arthritis giant cell glioblastoma liver cancer cancer leukopenia glomerulonephritis autoimmune hepatitis adult T-cell leukemia/lymphoma glioblastoma melanoma nephrotic syndrome Neoplasms, Experimental allergic contact dermatitis dissociative amnesia alopecia areata rheumatoid arthritis giant cell glioblastoma liver cancer anemia leukemia prostate cancer AIDS major depressive disorder HIV infectious disease asthma urinary bladder cancer autoimmune disease neutropenia influenza paranoid schizophrenia kidney disease pneumonia adult acute respiratory distress syndrome COVID-19 liver neoplasm lymphatic system disease arthritic joint disease autism urinary bladder neoplasm inborn carbohydrate metabolic disorder brain cancer brain injury juvenile idiopathic arthritis peripheral nervous system disease kidney neoplasm cutaneous melanoma lung benign neoplasm allergic disease lymphopenia schizophrenia systemic lupus erythematosus tuberculosis vaginal cancer hypotensive disorder benign neoplasm inflammatory bowel disease kidney cancer peripheral neuropathy breast disease acute T cell leukemia celiac disease liver disease diarrheal disease allergic rhinitis endogenous depression amnestic disorder skin disease breast cancer psoriasis
F [auth J]	: P01591	pancreatic intraductal papillary-mucinous neoplasm psoriasis B-cell chronic lymphocytic leukemia Bruton-type agammaglobulinemia cutaneous lupus erythematosus lung carcinoma malignant ependymoma malignant pancreatic neoplasm pancreatic ductal adenocarcinoma periodontitis tuberculosis breast cancer chronic kidney disease lung adenocarcinoma lymphoplasmacytic lymphoma pancreatic intraductal papillary-mucinous neoplasm psoriasis B-cell chronic lymphocytic leukemia Bruton-type agammaglobulinemia cutaneous lupus erythematosus lung carcinoma malignant ependymoma malignant pancreatic neoplasm pancreatic ductal adenocarcinoma periodontitis tuberculosis breast cancer chronic kidney disease lung adenocarcinoma lymphoplasmacytic lymphoma malignant glioma MALT lymphoma pancreatic intraductal papillary-mucinous carcinoma pituitary cancer ulcerative colitis breast carcinoma common variable immunodeficiency lung cancer malignant colon neoplasm malignant mesothelioma osteosarcoma

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RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.

9MBZ | pdb_00009mbz

Cryo-EM structure of human FcRL4 bound to IgA-Fc/J

External Resource: Annotation

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

InterPro: Protein Family Classification InterPro Database Homepage

Pharos: Disease Associations Pharos Homepage Annotation