Annotations: 6SOY

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
C	SCOP2B Superfamily	Type 2 solute binding protein-like	8041066	3000083	SCOP2B (2021-05-27)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
A	PF00913	e6soyA1	A: a+b complex topology	X: VSG (variant surface glycoprotein) N-terminal domain (From Topology)	H: VSG (variant surface glycoprotein) N-terminal domain (From Topology)	T: VSG (variant surface glycoprotein) N-terminal domain	F: PF00913	ECOD (1.6)
B	PF00913	e6soyB1	A: a+b complex topology	X: VSG (variant surface glycoprotein) N-terminal domain (From Topology)	H: VSG (variant surface glycoprotein) N-terminal domain (From Topology)	T: VSG (variant surface glycoprotein) N-terminal domain	F: PF00913	ECOD (1.6)
C	PF00405	e6soyC1	A: a/b three-layered sandwiches	X: Periplasmic binding protein-like II (From Topology)	H: Periplasmic binding protein-like II (From Topology)	T: Periplasmic binding protein-like II	F: PF00405	ECOD (1.6)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
C	PF00405	Transferrin (Transferrin)	Transferrin	-	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	ESAG6, subunit of heterodimeric transferrin receptor	transferrin receptor activity cargo receptor activity	symbiont-mediated perturbation of host defense response response to host defenses biological process involved in interspecies interaction between organisms response to stimulus response to other organism symbiont-mediated perturbation of host immune response response to defenses of other organism response to external stimulus response to biotic stimulus biological process involved in interaction with host biological process involved in symbiotic interaction evasion of host immune response modulation by symbiont of host process response to host immune response symbiont-mediated perturbation of host defense response response to host defenses biological process involved in interspecies interaction between organisms response to stimulus response to other organism symbiont-mediated perturbation of host immune response response to defenses of other organism response to external stimulus response to biotic stimulus biological process involved in interaction with host biological process involved in symbiotic interaction evasion of host immune response modulation by symbiont of host process response to host immune response response to host response to external biotic stimulus modulation of process of another organism	membrane cellular anatomical entity side of membrane cell periphery plasma membrane ciliary pocket membrane-bounded organelle cell projection organelle cilium plasma membrane bounded cell projection
B	ESAG7, subunit of heterodimeric transferrin receptor	transferrin receptor activity cargo receptor activity	symbiont-mediated perturbation of host defense response response to host defenses biological process involved in interspecies interaction between organisms response to stimulus response to other organism symbiont-mediated perturbation of host immune response response to defenses of other organism response to external stimulus response to biotic stimulus biological process involved in interaction with host biological process involved in symbiotic interaction evasion of host immune response modulation by symbiont of host process response to host immune response symbiont-mediated perturbation of host defense response response to host defenses biological process involved in interspecies interaction between organisms response to stimulus response to other organism symbiont-mediated perturbation of host immune response response to defenses of other organism response to external stimulus response to biotic stimulus biological process involved in interaction with host biological process involved in symbiotic interaction evasion of host immune response modulation by symbiont of host process response to host immune response response to host response to external biotic stimulus modulation of process of another organism	membrane cellular anatomical entity side of membrane cell periphery plasma membrane ciliary pocket membrane-bounded organelle cell projection organelle cilium plasma membrane bounded cell projection
C	Serotransferrin	cation binding transition metal ion binding iron ion binding ion binding binding ferrous iron binding metal ion binding small molecule binding ferric iron binding transferrin receptor binding protein binding signaling receptor binding metallochaperone activity iron chaperone activity cation binding transition metal ion binding iron ion binding ion binding binding ferrous iron binding metal ion binding small molecule binding ferric iron binding transferrin receptor binding protein binding signaling receptor binding metallochaperone activity iron chaperone activity molecular carrier activity	intracellular iron ion homeostasis inorganic ion homeostasis cellular homeostasis chemical homeostasis homeostatic process intracellular monoatomic cation homeostasis monoatomic ion homeostasis intracellular chemical homeostasis monoatomic cation homeostasis intracellular monoatomic ion homeostasis localization transport iron ion transport transition metal ion transport intracellular iron ion homeostasis inorganic ion homeostasis cellular homeostasis chemical homeostasis homeostatic process intracellular monoatomic cation homeostasis monoatomic ion homeostasis intracellular chemical homeostasis monoatomic cation homeostasis intracellular monoatomic ion homeostasis localization transport iron ion transport transition metal ion transport monoatomic ion transport monoatomic cation transport establishment of localization metal ion transport cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation intracellular signal transduction cell communication intracellular signaling cassette MAPK cascade cellular process ERK1 and ERK2 cascade signal transduction cellular response to iron ion cellular response to metal ion cellular response to chemical stimulus response to metal ion response to chemical response to iron ion humoral immune response biological process involved in interspecies interaction between organisms response to other organism defense response immune 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 immune system process response to bacterium response to external biotic stimulus regulation of protein stability regulation of biological quality regulation of localization import into cell positive regulation of cellular component organization regulation of cellular component organization positive regulation of biological process vesicle-mediated transport cellular component organization positive regulation of endocytosis cellular component organization or biogenesis positive regulation of receptor-mediated endocytosis positive regulation of cellular process regulation of endocytosis regulation of transport regulation of receptor-mediated endocytosis regulation of vesicle-mediated transport positive regulation of transport endocytosis receptor-mediated endocytosis positive regulation of DNA-templated transcription cellular biosynthetic process RNA metabolic process positive regulation of cellular metabolic process positive regulation of macromolecule biosynthetic process regulation of primary metabolic process nucleobase-containing compound metabolic process RNA biosynthetic process nucleic acid biosynthetic process positive regulation of metabolic process DNA-templated transcription regulation of RNA metabolic process positive regulation of biosynthetic process positive regulation of macromolecule metabolic process regulation of nucleobase-containing compound metabolic process regulation of RNA biosynthetic process regulation of biosynthetic process positive regulation of nucleobase-containing compound metabolic process cellular metabolic process primary metabolic process regulation of cellular metabolic process regulation of macromolecule metabolic process nucleobase-containing compound biosynthetic process gene expression macromolecule biosynthetic process nucleic acid metabolic process regulation of cellular biosynthetic process positive regulation of RNA metabolic process regulation of gene expression biosynthetic process positive regulation of RNA biosynthetic process metabolic process regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of DNA-templated transcription regulation of metabolic process positive regulation of cellular biosynthetic process developmental process myeloid leukocyte differentiation cellular developmental process hemopoiesis cell development myeloid cell differentiation cell differentiation osteoclast differentiation anatomical structure development leukocyte differentiation multicellular organismal process regulation of bone remodeling tissue homeostasis regulation of tissue remodeling regulation of bone resorption bone resorption multicellular organismal-level homeostasis tissue remodeling bone remodeling anatomical structure homeostasis positive regulation of multicellular organismal process regulation of multicellular organismal process positive regulation of bone resorption positive regulation of phosphorylation positive regulation of phosphorus metabolic process phosphorylation positive regulation of phosphate metabolic process regulation of phosphate metabolic process phosphate-containing compound metabolic process regulation of phosphorus metabolic process regulation of phosphorylation phosphorus metabolic process positive regulation of locomotion regulation of cell motility regulation of locomotion positive regulation of cell motility cell motility locomotion organelle organization actin cytoskeleton organization actin filament organization actin filament-based process supramolecular fiber organization cytoskeleton organization regulation of monoatomic ion transport regulation of iron ion transport regulation of metal ion transport	clathrin-coated pit membrane cellular anatomical entity endomembrane system membrane-bounded organelle organelle vesicle cell periphery apical part of cell plasma membrane plasma membrane region apical plasma membrane basal part of cell basal plasma membrane clathrin-coated pit membrane cellular anatomical entity endomembrane system membrane-bounded organelle organelle vesicle cell periphery apical part of cell plasma membrane plasma membrane region apical plasma membrane basal part of cell basal plasma membrane intracellular anatomical structure intracellular vesicle intracellular organelle bounding membrane of organelle cytoplasmic vesicle vesicle membrane clathrin-coated vesicle endocytic vesicle membrane coated vesicle endocytic vesicle clathrin-coated vesicle membrane clathrin-coated endocytic vesicle membrane intracellular membrane-bounded organelle clathrin-coated endocytic vesicle cytoplasmic vesicle membrane coated vesicle membrane cytoplasm organelle membrane extracellular exosome extracellular vesicle extracellular organelle extracellular region extracellular space extracellular membrane-bounded organelle protein-containing complex plasma membrane protein complex plasma membrane signaling receptor complex membrane protein complex HFE-transferrin receptor complex receptor complex cell surface early endosome endosome blood microparticle membrane-enclosed lumen intracellular organelle lumen endoplasmic reticulum lumen organelle lumen endoplasmic reticulum recycling endosome vesicle lumen cytoplasmic vesicle lumen secretory granule lumen secretory granule secretory vesicle perinuclear region of cytoplasm endosome membrane late endosome

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR001812	Trypanosome variant surface glycoprotein, A-type, N-terminal domain	Domain
B	IPR001812	Trypanosome variant surface glycoprotein, A-type, N-terminal domain	Domain
C	IPR016357	Transferrin	Family
C	IPR001156	Transferrin-like domain	Domain
C	IPR018195	Transferrin family, iron binding site	Binding Site
C	IPR030685	Serotransferrin, mammalian	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
C	Pharos: P02787	atransferrinemia Alzheimer disease echinococcosis nephrotic syndrome hypochromic microcytic anemia obesity disorder alcohol abuse restless legs syndrome Inflammation malignant mesothelioma sarcomatoid carcinoma carcinoma paratuberculosis hepatitis breast cancer atransferrinemia Alzheimer disease echinococcosis nephrotic syndrome hypochromic microcytic anemia obesity disorder alcohol abuse restless legs syndrome Inflammation malignant mesothelioma sarcomatoid carcinoma carcinoma paratuberculosis hepatitis breast cancer malignant glioma medulloblastoma cystic fibrosis pancreatic intraductal papillary-mucinous carcinoma ductal breast carcinoma in situ Pick disease primitive neuroectodermal tumor glioblastoma schizophrenia subependymal giant cell astrocytoma atopic eczema autism lung cancer breast carcinoma mammary neoplasms, animal oligodendroglioma drug-induced liver injury pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia acute kidney failure pituitary cancer progressive supranuclear palsy hemochromatosis type 1 sinusitis invasive ductal breast carcinoma large cell medulloblastoma malignant ependymoma malignant pancreatic neoplasm osteosarcoma esophageal adenocarcinoma fatty liver disease psoriasis schizoaffective disorder undifferentiated carcinoma atypical teratoid rhabdoid tumor lung adenocarcinoma

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 R01GM133198.