Annotations: 7KJR

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2B Superfamily	SARS coronavirus viroporin transmembrane domain	8093337	3002697	SCOP2B (2021-05-27)
A	SCOP2B Superfamily	SARS coronavirus Orf3/3a C-terminal domain	8093336	3002696	SCOP2B (2021-05-27)
B	SCOP2B Superfamily	SARS coronavirus viroporin transmembrane domain	8093337	3002697	SCOP2B (2021-05-27)
B	SCOP2B Superfamily	SARS coronavirus Orf3/3a C-terminal domain	8093336	3002696	SCOP2B (2021-05-27)

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	ORF3a protein	molecular function activator activity molecular function regulator activity passive transmembrane transporter activity monoatomic ion channel activity channel activity monoatomic ion transmembrane transporter activity transporter activity transmembrane transporter activity identical protein binding protein binding binding	cellular component organization cellular component biogenesis cellular component assembly protein-containing complex organization protein complex oligomerization protein-containing complex assembly cellular process cellular component organization or biogenesis transmembrane transport localization transport inorganic ion transmembrane transport establishment of localization inorganic cation transmembrane transport cellular component organization cellular component biogenesis cellular component assembly protein-containing complex organization protein complex oligomerization protein-containing complex assembly cellular process cellular component organization or biogenesis transmembrane transport localization transport inorganic ion transmembrane transport establishment of localization inorganic cation transmembrane transport positive regulation of organelle organization regulation of cellular process macroautophagy autophagy regulation of reticulophagy modulation by virus of host process cellular catabolic process positive regulation of metabolic process induction by virus of host autophagy positive regulation of reticulophagy cellular component disassembly positive regulation of autophagy regulation of biological process modulation by virus of host autophagy cellular metabolic process regulation of cellular metabolic process symbiont-mediated perturbation of host autophagy biological process involved in interaction with host regulation of organelle organization induction by virus of host reticulophagy regulation of macroautophagy metabolic process regulation of metabolic process symbiont-mediated perturbation of host cellular process catabolic process biological process involved in interspecies interaction between organisms positive regulation of cellular component organization regulation of cellular component organization positive regulation of biological process positive regulation of cellular metabolic process regulation of autophagy biological process involved in symbiotic interaction organelle disassembly viral process positive regulation of macroautophagy process utilizing autophagic mechanism modulation of process of another organism positive regulation of cellular process modulation by virus of host cellular process biological regulation regulation of catabolic process positive regulation of catabolic process organelle organization modulation by symbiont of host process reticulophagy regulation of cellular catabolic process positive regulation of cellular catabolic process	virion component virion membrane extracellular region cellular anatomical entity host intracellular membrane-bounded organelle host cellular component host intracellular part host cell cytoplasm host cell part host cell endoplasmic reticulum host intracellular region host cell cytoplasm part host intracellular organelle host cell lysosome virion component virion membrane extracellular region cellular anatomical entity host intracellular membrane-bounded organelle host cellular component host intracellular part host cell cytoplasm host cell part host cell endoplasmic reticulum host intracellular region host cell cytoplasm part host intracellular organelle host cell lysosome host cell endosome cell periphery plasma membrane membrane host cell membrane host cell endomembrane system host cell endoplasmic reticulum membrane protein-containing complex plasma membrane protein complex voltage-gated calcium channel complex membrane protein complex cation channel complex transporter complex transmembrane transporter complex calcium channel complex monoatomic ion channel complex host cell plasma membrane cytoplasmic side of plasma membrane cytoplasmic side of membrane side of membrane voltage-gated potassium channel complex potassium channel complex
C, D	Apolipoprotein A-I	amide binding amyloid-beta binding binding peptide binding high-density lipoprotein particle receptor binding protein binding signaling receptor binding lipoprotein particle receptor binding heat shock protein binding phospholipid binding lipid binding sterol transfer activity lipid transporter activity lipid transfer activity amide binding amyloid-beta binding binding peptide binding high-density lipoprotein particle receptor binding protein binding signaling receptor binding lipoprotein particle receptor binding heat shock protein binding phospholipid binding lipid binding sterol transfer activity lipid transporter activity lipid transfer activity transporter activity cholesterol transfer activity apolipoprotein A-I receptor binding apolipoprotein receptor binding lipoprotein particle binding protein-containing complex binding protein-lipid complex binding high-density lipoprotein particle binding identical protein binding enzyme regulator activity enzyme activator activity molecular function activator activity molecular function regulator activity phosphatidylcholine-sterol O-acyltransferase activator activity sterol binding organic cyclic compound binding alcohol binding steroid binding cholesterol binding small molecule binding protein homodimerization activity protein dimerization activity signaling receptor regulator activity chemorepellent activity receptor ligand activity signaling receptor activator activity enzyme binding	positive regulation of cholesterol efflux regulation of localization transport positive regulation of sterol transport positive regulation of biological process regulation of lipid transport organic hydroxy compound transport localization regulation of cholesterol efflux sterol transport regulation of cholesterol transport positive regulation of cholesterol transport regulation of sterol transport regulation of biological process positive regulation of cholesterol efflux regulation of localization transport positive regulation of sterol transport positive regulation of biological process regulation of lipid transport organic hydroxy compound transport localization regulation of cholesterol efflux sterol transport regulation of cholesterol transport positive regulation of cholesterol transport regulation of sterol transport regulation of biological process regulation of transport biological regulation lipid localization lipid transport positive regulation of lipid localization establishment of localization positive regulation of lipid transport positive regulation of transport regulation of lipid localization macromolecule localization cholesterol transport cholesterol efflux vitamin transport regulation of protein stability regulation of biological quality protein stabilization phospholipid homeostasis chemical homeostasis homeostatic process lipid homeostasis reverse cholesterol transport regulation of CoA-transferase activity regulation of molecular function positive regulation of molecular function positive regulation of transferase activity regulation of catalytic activity positive regulation of CoA-transferase activity positive regulation of catalytic activity regulation of transferase activity triglyceride homeostasis acylglycerol homeostasis epithelium migration multicellular organismal process tissue migration endothelial cell migration ameboidal-type cell migration blood vessel endothelial cell migration epithelial cell migration cell migration cellular process cell motility import into cell positive regulation of cellular component organization regulation of cellular process regulation of cellular component organization vesicle-mediated transport cellular component organization positive regulation of endocytosis phagocytosis cellular component organization or biogenesis positive regulation of cellular process regulation of endocytosis regulation of phagocytosis regulation of vesicle-mediated transport positive regulation of phagocytosis endocytosis regulation of immune effector process response to stimulus negative regulation of biological process negative regulation of cellular metabolic process cytokine production regulation of immune system process negative regulation of cytokine production involved in immune response regulation of cytokine production involved in immune response immune response cellular metabolic process negative regulation of metabolic process negative regulation of immune effector process regulation of cellular metabolic process negative regulation of cellular biosynthetic process immune effector process regulation of gene expression negative regulation of production of molecular mediator of immune response negative regulation of gene expression biosynthetic process negative regulation of macromolecule biosynthetic process metabolic process regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of production of molecular mediator of immune response negative regulation of multicellular organismal process regulation of metabolic process cellular biosynthetic process negative regulation of cellular process regulation of cytokine production regulation of multicellular organismal process cytokine production involved in immune response negative regulation of macromolecule metabolic process production of molecular mediator of immune response regulation of biosynthetic process negative regulation of cytokine production regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process regulation of cellular biosynthetic process negative regulation of immune system process negative regulation of biosynthetic process immune system process positive regulation of substrate adhesion-dependent cell spreading regulation of cell-substrate adhesion positive regulation of cell adhesion regulation of substrate adhesion-dependent cell spreading regulation of cell adhesion cell-substrate adhesion cell adhesion positive regulation of cell-substrate adhesion substrate adhesion-dependent cell spreading embryo development negative regulation of cell adhesion regulation of cell-cell adhesion involved in gastrulation heterotypic cell-cell adhesion multicellular organism development cell-cell adhesion anatomical structure development regulation of cell-cell adhesion regulation of heterotypic cell-cell adhesion cell-cell adhesion via plasma-membrane adhesion molecules developmental process cell-cell adhesion involved in gastrulation embryonic morphogenesis gastrulation anatomical structure morphogenesis negative regulation of heterotypic cell-cell adhesion negative regulation of cell-cell adhesion chemotaxis negative chemotaxis taxis response to chemical response to external stimulus locomotion protein-containing complex remodeling protein-lipid complex organization very-low-density lipoprotein particle remodeling protein-lipid complex remodeling negative regulation of very-low-density lipoprotein particle remodeling plasma lipoprotein particle organization negative regulation of cellular component organization protein-containing complex organization plasma lipoprotein particle remodeling regulation of plasma lipoprotein particle levels regulation of very-low-density lipoprotein particle remodeling triglyceride-rich lipoprotein particle remodeling organonitrogen compound metabolic process peptidyl-methionine modification macromolecule modification peptidyl-amino acid modification primary metabolic process protein metabolic process protein modification process system process regulation of intestinal absorption digestive system process regulation of system process lipid digestion regulation of digestive system process intestinal lipid absorption digestion intestinal absorption regulation of intestinal lipid absorption intestinal cholesterol absorption regulation of intestinal cholesterol absorption protein oxidation cholesterol import cell population proliferation endothelial cell proliferation epithelial cell proliferation lipoprotein biosynthetic process lipoprotein metabolic process organonitrogen compound biosynthetic process cellular component biogenesis cellular component assembly high-density lipoprotein particle assembly protein-containing complex assembly plasma lipoprotein particle assembly protein-lipid complex assembly glycerophospholipid metabolic process lipid biosynthetic process phospholipid metabolic process phosphate-containing compound metabolic process phosphatidylcholine metabolic process phosphorus metabolic process glycerophospholipid biosynthetic process phospholipid biosynthetic process glycerolipid biosynthetic process organophosphate metabolic process organophosphate biosynthetic process cellular lipid metabolic process glycerolipid metabolic process phosphatidylcholine biosynthetic process lipid metabolic process glucocorticoid metabolic process steroid metabolic process phospholipid transport organophosphate ester transport phospholipid efflux cellular response to stimulus regulation of signaling small GTPase-mediated signal transduction signaling regulation of small GTPase mediated signal transduction regulation of signal transduction regulation of Cdc42 protein signal transduction regulation of Rho protein signal transduction intracellular signal transduction Rho protein signal transduction Cdc42 protein signal transduction cell communication regulation of intracellular signal transduction regulation of response to stimulus intracellular signaling cassette regulation of cell communication signal transduction integrin-mediated signaling pathway cell surface receptor signaling pathway regulation of defense response regulation of response to external stimulus negative regulation of inflammatory response defense response negative regulation of response to stimulus regulation of inflammatory response response to stress negative regulation of response to external stimulus regulation of response to stress negative regulation of defense response inflammatory response interleukin-1 production regulation of interleukin-1 beta production negative regulation of interleukin-1 beta production negative regulation of interleukin-1 production regulation of interleukin-1 production interleukin-1 beta production positive regulation of cell communication positive regulation of signal transduction positive regulation of response to stimulus positive regulation of intracellular signal transduction positive regulation of Rho protein signal transduction positive regulation of small GTPase mediated signal transduction positive regulation of signaling regulation of cholesterol metabolic process organic hydroxy compound metabolic process sterol metabolic process regulation of lipid metabolic process cholesterol metabolic process alcohol metabolic process regulation of primary metabolic process positive regulation of metabolic process regulation of small molecule metabolic process positive regulation of lipid metabolic process small molecule metabolic process regulation of steroid metabolic process secondary alcohol metabolic process positive regulation of cholesterol metabolic process positive regulation of steroid metabolic process positive regulation of small molecule metabolic process sterol homeostasis cholesterol homeostasis secondary alcohol biosynthetic process small molecule biosynthetic process cholesterol biosynthetic process sterol biosynthetic process organic hydroxy compound biosynthetic process alcohol biosynthetic process steroid biosynthetic process regulation of cell adhesion molecule production negative regulation of cell adhesion molecule production cell adhesion molecule production high-density lipoprotein particle clearance plasma lipoprotein particle clearance adrenal gland development endocrine system development gland development animal organ development system development high-density lipoprotein particle remodeling lipid storage maintenance of location response to cytokine response to peptide regulation of response to cytokine stimulus negative regulation of response to cytokine stimulus regulation of protein modification process regulation of protein phosphorylation regulation of phosphate metabolic process protein phosphorylation phosphorylation regulation of protein metabolic process regulation of phosphorylation regulation of phosphorus metabolic process G protein-coupled receptor signaling pathway regulation of phospholipid transport positive regulation of phospholipid efflux regulation of phospholipid efflux positive regulation of phospholipid transport negative regulation of signaling negative regulation of cell communication cytokine-mediated signaling pathway cellular response to tumor necrosis factor tumor necrosis factor-mediated signaling pathway cellular response to cytokine stimulus regulation of tumor necrosis factor-mediated signaling pathway regulation of cytokine-mediated signaling pathway negative regulation of tumor necrosis factor-mediated signaling pathway negative regulation of signal transduction negative regulation of cytokine-mediated signaling pathway response to tumor necrosis factor positive regulation of organelle organization regulation of cytoskeleton organization regulation of actin filament-based process regulation of actin filament bundle assembly positive regulation of actin filament bundle assembly actin filament bundle organization positive regulation of stress fiber assembly actin filament-based process stress fiber assembly regulation of actin filament organization actin cytoskeleton organization actomyosin structure organization positive regulation of cellular component biogenesis positive regulation of cytoskeleton organization actin filament organization regulation of cellular component biogenesis positive regulation of supramolecular fiber organization regulation of organelle organization regulation of stress fiber assembly organelle organization contractile actin filament bundle assembly regulation of actomyosin structure organization actin filament bundle assembly regulation of actin cytoskeleton organization regulation of supramolecular fiber organization supramolecular fiber organization cytoskeleton organization positive regulation of hydrolase activity regulation of hydrolase activity	protein-containing complex extracellular region plasma lipoprotein particle high-density lipoprotein particle extracellular space cellular anatomical entity lipoprotein particle protein-lipid complex extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle organelle vesicle protein-containing complex extracellular region plasma lipoprotein particle high-density lipoprotein particle extracellular space cellular anatomical entity lipoprotein particle protein-lipid complex extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle organelle vesicle extracellular membrane-bounded organelle cell periphery extracellular matrix external encapsulating structure collagen-containing extracellular matrix intracellular anatomical structure cytoplasm cytosol intracellular vesicle intracellular membrane-bounded organelle intracellular organelle cytoplasmic vesicle endocytic vesicle membrane-enclosed lumen endomembrane system intracellular organelle lumen endoplasmic reticulum lumen organelle lumen endoplasmic reticulum spherical high-density lipoprotein particle plasma membrane membrane early endosome endosome blood microparticle chylomicron low-density lipoprotein particle vesicle lumen cytoplasmic vesicle lumen secretory granule lumen secretory granule secretory vesicle endocytic vesicle lumen very-low-density lipoprotein particle triglyceride-rich plasma lipoprotein particle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR046446	3a-like viroporin, cytosolic domain, alpha/betacoronavirus	Domain
A, B	IPR024407	Protein 3a, betacoronavirus	Family
A, B	IPR046445	3a-like viroporin, transmembrane domain, alpha/betacoronavirus	Domain
C, D	IPR000074	Apolipoprotein A/E	Family

Membrane Protein Annotation: OPM OPM Database Homepage

Chains	External Link	Type	Class	Superfamily	Family
A, B, C, D	OPM	Transmembrane	Alpha-helical polytopic	Polytopic viroporins	Betacoronavirus viroporin 3a

Membrane Protein Annotation: MemProtMD MemProtMD Database Homepage

Chains	External Link	Comment
A, B, C, D	MemProtMD	Annotated as membrane protein by MemProtMD

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.