Annotations: 7N1B

SARS-CoV-2 RLQ peptide binds to HLA-A2

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
E	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8003766	3000071	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8003766	3000071	SCOP2B (2022-06-29)

Domain Annotation: ECOD Classification ECOD Database Homepage

Chains	Family Name	Domain Identifier	Architecture	Possible Homology	Homology	Topology	Family	Provenance Source (Version)
E	zf-C3HC4	e7n1bE1	A: alpha arrays	X: putative RnfG subunit of electron transport complex	H: putative RnfG subunit of electron transport complex	T: Aspartate/ornithine carbamoyltransferase	F: zf-C3HC4	ECOD (v295.2)
B	zf-C3HC4	e7n1bB1	A: alpha arrays	X: putative RnfG subunit of electron transport complex	H: putative RnfG subunit of electron transport complex	T: Aspartate/ornithine carbamoyltransferase	F: zf-C3HC4	ECOD (v295.2)
D	zf-C3HC4	e7n1bD1	A: alpha arrays	X: putative RnfG subunit of electron transport complex	H: putative RnfG subunit of electron transport complex	T: Aspartate/ornithine carbamoyltransferase	F: zf-C3HC4	ECOD (v295.2)
A	zf-C3HC4	e7n1bA1	A: alpha arrays	X: putative RnfG subunit of electron transport complex	H: putative RnfG subunit of electron transport complex	T: Aspartate/ornithine carbamoyltransferase	F: zf-C3HC4	ECOD (v295.2)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Source
B, E	PF07654	Immunoglobulin C1-set domain (C1-set)	Immunoglobulin C1-set domain	Domain
A, D	PF00129	Class I Histocompatibility antigen, domains alpha 1 and 2 (MHC_I)	Class I Histocompatibility antigen, domains alpha 1 and 2	Domain
A, D	PF07654	Immunoglobulin C1-set domain (C1-set)	Immunoglobulin C1-set domain	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
C, F	Spike protein S2	molecular function activator activity molecular function regulator activity signaling receptor regulator activity receptor ligand activity signaling receptor activator activity host cell surface binding binding host cell surface receptor binding structural constituent of virion structural molecule activity identical protein binding protein binding	viral process fusion of virus membrane with host endosome membrane membrane fusion involved in viral entry into host cell membrane organization cellular component organization membrane fusion cellular process cellular component organization or biogenesis symbiont-mediated disruption of host anatomical structure biological process involved in interspecies interaction between organisms symbiont-mediated disruption of host tissue disruption of anatomical structure in another organism symbiont entry into host cell symbiont entry into host viral process fusion of virus membrane with host endosome membrane membrane fusion involved in viral entry into host cell membrane organization cellular component organization membrane fusion cellular process cellular component organization or biogenesis symbiont-mediated disruption of host anatomical structure biological process involved in interspecies interaction between organisms symbiont-mediated disruption of host tissue disruption of anatomical structure in another organism symbiont entry into host cell symbiont entry into host viral life cycle biological process involved in interaction with host biological process involved in symbiotic interaction virion attachment to host cell receptor-mediated virion attachment to host cell adhesion of symbiont to host cell adhesion of symbiont to host fusion of virus membrane with host plasma membrane endocytosis involved in viral entry into host cell symbiont-mediated perturbation of host defense response symbiont-mediated perturbation of host process symbiont-mediated-mediated suppression of host tetherin activity modulation of process of another organism regulation of biological process positive regulation of viral life cycle positive regulation of viral process biological regulation positive regulation of biological process modulation by symbiont of entry into host regulation of viral entry into host cell regulation of viral life cycle regulation of viral process positive regulation of viral entry into host cell positive regulation by symbiont of entry into host regulation of biological process involved in symbiotic interaction symbiont-mediated suppression of host immune response symbiont-mediated suppression of host innate immune response symbiont-mediated perturbation of host immune response symbiont-mediated perturbation of host innate immune response entry receptor-mediated virion attachment to host cell	host cellular component host extracellular region cellular anatomical structure other organism part membrane cell periphery plasma membrane host intracellular membrane-bounded organelle host intracellular part host cell membrane host cell cytoplasm part host intracellular organelle host cell endoplasmic reticulum-Golgi intermediate compartment membrane host cell endoplasmic reticulum-Golgi intermediate compartment host cellular component host extracellular region cellular anatomical structure other organism part membrane cell periphery plasma membrane host intracellular membrane-bounded organelle host intracellular part host cell membrane host cell cytoplasm part host intracellular organelle host cell endoplasmic reticulum-Golgi intermediate compartment membrane host cell endoplasmic reticulum-Golgi intermediate compartment host cell cytoplasm host cell part host intracellular region host cell plasma membrane virion component virion membrane viral membrane viral envelope host cell surface
B, E	Beta-2-microglobulin	binding antigen binding peptide antigen binding peptide binding protein-containing complex binding MHC protein complex binding MHC class II protein complex binding identical protein binding protein binding protein homodimerization activity protein dimerization activity structural molecule 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 adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains multicellular organismal process regulation of immune effector process lymphocyte mediated immunity 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 adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains multicellular organismal process regulation of immune effector process lymphocyte mediated immunity T cell mediated immunity positive regulation of leukocyte mediated immunity regulation of cellular process response to stimulus T cell cytokine production positive regulation of macromolecule biosynthetic process positive regulation of metabolic process positive regulation of immune response cytokine production leukocyte mediated immunity regulation of immune system process positive regulation of macromolecule metabolic process positive regulation of adaptive immune response positive regulation of T cell cytokine production positive regulation of immune system process regulation of T cell mediated immunity regulation of biological process regulation of cytokine production involved in immune response immune response regulation of adaptive immune response immune effector process regulation of gene expression regulation of leukocyte mediated immunity biosynthetic process regulation of response to stimulus positive regulation of production of molecular mediator of immune response positive regulation of multicellular organismal process regulation of immune response metabolic process regulation of macromolecule biosynthetic process macromolecule metabolic process regulation of production of molecular mediator of immune response positive regulation of cytokine production regulation of metabolic process positive regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains positive regulation of lymphocyte mediated immunity positive regulation of biological process positive regulation of response to stimulus regulation of T cell cytokine production regulation of adaptive immune response based on somatic recombination of immune receptors built from immunoglobulin superfamily domains positive regulation of biosynthetic process regulation of cytokine production positive regulation of immune effector process regulation of multicellular organismal process cytokine production involved in immune response positive regulation of cellular process production of molecular mediator of immune response regulation of biosynthetic process biological regulation regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process adaptive immune response regulation of lymphocyte mediated immunity positive regulation of gene expression immune system process positive regulation of T cell mediated immunity positive regulation of cytokine production involved in immune response cellular process cellular response to stimulus cellular response to iron ion cellular response to metal ion cellular response to chemical stimulus response to metal ion response to iron ion response to chemical regulation of localization import into cell regulation of cellular component organization transport negative regulation of biological process negative regulation of transport negative regulation of endocytosis vesicle-mediated transport cellular component organization localization negative regulation of cellular process cellular component organization or biogenesis regulation of endocytosis negative regulation of cellular component organization negative regulation of receptor-mediated endocytosis regulation of transport regulation of receptor-mediated endocytosis regulation of vesicle-mediated transport establishment of localization endocytosis receptor-mediated endocytosis positive regulation of cellular component organization positive regulation of endocytosis positive regulation of receptor-mediated endocytosis positive regulation of transport peptide antigen assembly with MHC class I protein complex protein-containing complex organization peptide antigen assembly with MHC protein complex MHC class I protein complex assembly cellular component biogenesis antigen processing and presentation cellular component assembly protein-containing complex assembly antigen processing and presentation of peptide antigen via MHC class I MHC protein complex assembly antigen processing and presentation of peptide antigen regulation of developmental process cellular developmental process cell development regulation of cell differentiation regulation of neurogenesis regulation of cell development regulation of nervous system development negative regulation of neurogenesis multicellular organism development neurogenesis cell differentiation anatomical structure development negative regulation of nervous system development negative regulation of cell differentiation system development developmental process regulation of multicellular organismal development negative regulation of developmental process nervous system development negative regulation of cell development negative regulation of multicellular organismal process animal gross anatomical part developmental process regulation of defense response regulation of response to biotic stimulus biological process involved in interspecies interaction between organisms regulation of response to external stimulus response to biotic stimulus response to stress regulation of response to stress innate immune response response to external biotic stimulus natural killer cell mediated immunity regulation of natural killer cell mediated immunity response to other organism defense response regulation of innate immune response defense response to symbiont response to external stimulus defense response to other organism antigen processing and presentation of peptide antigen via MHC class Ib antigen processing and presentation via MHC class Ib antigen processing and presentation of exogenous peptide antigen via MHC class Ib antigen processing and presentation of exogenous peptide antigen antigen processing and presentation of exogenous antigen negative regulation of cell population proliferation cell population proliferation regulation of cell population proliferation regulation of epithelial cell proliferation epithelial cell proliferation negative regulation of epithelial cell proliferation establishment of protein localization iron ion transport metal ion transport protein transport macromolecule localization transferrin transport transition metal ion transport monoatomic ion transport intracellular protein localization monoatomic cation transport system process sensory perception of chemical stimulus sensory perception nervous system process sensory perception of smell primary metabolic process protein metabolic process supramolecular fiber organization amyloid fibril formation protein homotetramerization protein complex oligomerization protein tetramerization protein homooligomerization antigen processing and presentation of exogenous peptide antigen via MHC class II antigen processing and presentation of peptide or polysaccharide antigen via MHC class II antigen processing and presentation of peptide antigen via MHC class II peptide antigen assembly with MHC class II protein complex MHC class II protein complex assembly cellular response to nicotine response to nicotine regulation of cellular senescence cellular senescence positive regulation of cellular senescence cellular response to stress antigen processing and presentation of endogenous peptide antigen antigen processing and presentation of endogenous antigen antigen processing and presentation of endogenous peptide antigen via MHC class I behavior learning or memory cognition negative regulation of monoatomic ion transport regulation of monoatomic ion transport regulation of iron ion transport regulation of metal ion transport negative regulation of iron ion transport regulation of leukocyte activation regulation of cell activation positive regulation of leukocyte cell-cell adhesion lymphocyte activation leukocyte cell-cell adhesion leukocyte activation positive regulation of cell-cell adhesion positive regulation of lymphocyte activation positive regulation of cell activation cell adhesion cell-cell adhesion T cell activation positive regulation of leukocyte activation regulation of cell-cell adhesion positive regulation of T cell activation positive regulation of cell adhesion regulation of cell adhesion cell activation regulation of T cell activation regulation of leukocyte cell-cell adhesion regulation of lymphocyte activation negative regulation of forebrain neuron differentiation forebrain development regulation of forebrain neuron differentiation central nervous system neuron differentiation neuron differentiation head development forebrain generation of neurons animal organ development brain development generation of neurons central nervous system development forebrain neuron differentiation negative regulation of neuron differentiation regulation of neuron differentiation	cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle vesicle cell periphery cellular anatomical structure cell surface membrane plasma membrane external side of plasma membrane side of membrane extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle vesicle extracellular membrane-bounded organelle protein-containing complex plasma membrane protein complex plasma membrane signaling receptor complex membrane protein complex signaling receptor complex HFE-transferrin receptor complex MHC class I protein complex MHC protein complex endosome membrane intracellular anatomical structure endosome intracellular vesicle late endosome membrane intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle membrane bounding membrane of organelle cytoplasmic vesicle vesicle membrane late endosome cytoplasm organelle membrane MHC class Ib protein complex phagocytic vesicle phagocytic vesicle membrane endocytic vesicle membrane endocytic vesicle vacuolar membrane lytic vacuole vacuole lytic vacuole membrane lysosomal membrane lysosome Golgi apparatus membrane-enclosed lumen intracellular organelle lumen endoplasmic reticulum lumen organelle lumen endoplasmic reticulum Golgi membrane MHC class I peptide loading complex organelle subcompartment endoplasmic reticulum subcompartment nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum protein-containing complex endoplasmic reticulum membrane vesicle lumen cytoplasmic vesicle lumen secretory granule lumen specific granule lumen secretory granule secretory vesicle specific granule anchoring junction cell junction focal adhesion cell-substrate junction MHC class II protein complex early endosome endosome lumen early endosome lumen recycling endosome recycling endosome membrane tertiary granule lumen tertiary granule early endosome membrane transport vesicle transport vesicle membrane coated vesicle membrane COPII-coated ER to Golgi transport vesicle ER to Golgi transport vesicle membrane coated vesicle
A, D	MHC class I antigen, A-2 alpha chain	-	response to stimulus immune response immune system process antigen processing and presentation	membrane-bounded organelle intracellular anatomical structure organelle subcompartment membrane lumenal side of endoplasmic reticulum membrane intracellular membrane-bounded organelle endomembrane system side of membrane lumenal side of membrane endoplasmic reticulum subcompartment intracellular organelle cellular anatomical structure organelle nuclear outer membrane-endoplasmic reticulum membrane network membrane-bounded organelle intracellular anatomical structure organelle subcompartment membrane lumenal side of endoplasmic reticulum membrane intracellular membrane-bounded organelle endomembrane system side of membrane lumenal side of membrane endoplasmic reticulum subcompartment intracellular organelle cellular anatomical structure organelle nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum cytoplasm organelle membrane endoplasmic reticulum membrane intracellular vesicle phagocytic vesicle phagocytic vesicle membrane cytoplasmic vesicle membrane bounding membrane of organelle cytoplasmic vesicle vesicle membrane endocytic vesicle membrane vesicle endocytic vesicle endosome membrane endosome recycling endosome recycling endosome membrane Golgi membrane Golgi apparatus early endosome early endosome membrane cell surface cell periphery plasma membrane transport vesicle transport vesicle membrane coated vesicle membrane COPII-coated ER to Golgi transport vesicle ER to Golgi transport vesicle membrane coated vesicle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
C, F	IPR044873	Spike glycoprotein S2, coronavirus, heptad repeat 1	Domain
C, F	IPR044366	Spike (S) protein S1 subunit, receptor-binding domain, SARS-CoV-2	Domain
C, F	IPR018548	Spike (S) protein S1 subunit, receptor-binding domain, betacoronavirus	Domain
C, F	IPR044341	Spike (S) protein S1 subunit, N-terminal domain, SARS-CoV-like	Domain
C, F	IPR032500	Spike glycoprotein S1, N-terminal domain, betacoronavirus-like	Domain
C, F	IPR042578	Spike glycoprotein, betacoronavirus	Family
C, F	IPR036326	Spike S1 subunit, receptor binding domain superfamily, betacoronavirus	Homologous Superfamily
C, F	IPR043002	Spike glycoprotein, N-terminal domain superfamily	Homologous Superfamily
C, F	IPR044874	Spike glycoprotein S2, coronavirus, heptad repeat 2	Domain
C, F	IPR043473	Spike glycoprotein S2 superfamily, coronavirus	Homologous Superfamily
C, F	IPR043607	Coronavirus spike glycoprotein S1, C-terminal	Domain
C, F	IPR002552	Spike glycoprotein S2, coronavirus	Domain
B, E	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
B, E	IPR003006	Immunoglobulin/major histocompatibility complex, conserved site	Conserved Site
B, E	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
B, E	IPR007110	Immunoglobulin-like domain	Domain
B, E	IPR050160	Major Histocompatibility Complex/Immunoglobulin	Family
B, E	IPR003597	Immunoglobulin C1-set	Domain
B, E	IPR015707	Beta-2-Microglobulin	Family
A, D	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
A, D	IPR050208	Antigen-presenting and immune regulatory MHC class I-related	Family
A, D	IPR037055	MHC class I-like antigen recognition-like superfamily	Homologous Superfamily
A, D	IPR003597	Immunoglobulin C1-set	Domain
A, D	IPR010579	MHC class I, alpha chain, C-terminal	Domain
A, D	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A, D	IPR011161	MHC class I-like antigen recognition-like	Domain
A, D	IPR011162	MHC classes I/II-like antigen recognition protein	Homologous Superfamily
A, D	IPR007110	Immunoglobulin-like domain	Domain
A, D	IPR001039	MHC class I alpha chain, alpha1 alpha2 domains	Domain
A, D	IPR003006	Immunoglobulin/major histocompatibility complex, conserved site	Conserved Site

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
B, E	: P61769	familial visceral amyloidosis hypoproteinemia, hypercatabolic diffuse large B-cell lymphoma MHC class I deficiency esophageal squamous cell carcinoma kidney disease amyloidosis mature T-cell and NK-cell non-Hodgkin lymphoma autoimmune disease variant ABeta2M amyloidosis Hypergammaglobulinemia prostate cancer heart disease interstitial cystitis lung carcinoma familial visceral amyloidosis hypoproteinemia, hypercatabolic diffuse large B-cell lymphoma MHC class I deficiency esophageal squamous cell carcinoma kidney disease amyloidosis mature T-cell and NK-cell non-Hodgkin lymphoma autoimmune disease variant ABeta2M amyloidosis Hypergammaglobulinemia prostate cancer heart disease interstitial cystitis lung carcinoma acquired metabolic disease ovarian cancer pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia pilocytic astrocytoma psoriasis Sjogren syndrome glioblastoma juvenile dermatomyositis lung adenocarcinoma lymphatic system disease acute kidney failure pancreatic intraductal papillary-mucinous carcinoma periodic fever syndrome bone marrow disease rheumatoid arthritis Down syndrome subependymal giant cell astrocytoma lung cancer lymphoplasmacytic lymphoma osteosarcoma pancreatic intraductal papillary-mucinous neoplasm cancer schizophrenia ulcerative colitis