Annotations: 8VRB

Structure of a synthetic antibody in complex with a class I MHC presenting a hapten-peptide conjugate

External Resource: Annotation

Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
SAbDab Antibody Annotation
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)
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	V-set	e8vrbE1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
D	V-set	e8vrbD1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
B	V-set	e8vrbB1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)
A	V-set	e8vrbA1	A: alpha arrays	X: HTH	H: HTH	T: Three-helical HTH	F: V-set	ECOD (v295)

SAbDab Antibody Annotation SAbDab Database Homepage

Chain	Chain Class	Chain Subclass	Chain Type	Antigen Name(s)	Provenance Source
E	Heavy Chain	IGHV3	-	hla-a antigen \| gtpase kras, n-terminally processed	SAbDab (2026-06-26)
D	Light Chain	IGKV1	Kappa	hla-a antigen \| gtpase kras, n-terminally processed	SAbDab (2026-06-26)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
B	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
E	R023 Fab heavy chain	-	-	-
D	R023 Fab light chain	-	-	-
C	GTPase KRas, N-terminally processed	guanyl nucleotide binding binding nucleotide binding GMP binding guanyl ribonucleotide binding purine ribonucleotide binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding guanyl nucleotide binding binding nucleotide binding GMP binding guanyl ribonucleotide binding purine ribonucleotide binding nucleoside phosphate binding ion binding purine nucleotide binding anion binding heterocyclic compound binding carbohydrate derivative binding ribonucleotide binding small molecule binding GTP binding purine ribonucleoside triphosphate binding GDP binding protein-membrane adaptor activity protein-macromolecule adaptor activity molecular adaptor activity protein-containing complex binding LRR domain binding protein binding protein domain specific binding pyrophosphatase activity GTPase activity G protein activity ribonucleoside triphosphate phosphatase activity molecular function regulator activity hydrolase activity, acting on acid anhydrides, in phosphorus-containing anhydrides hydrolase activity hydrolase activity, acting on acid anhydrides catalytic activity identical protein binding	developmental process multicellular organism development multicellular organismal process hepaticobiliary system development gland development animal organ development anatomical structure development liver development animal gross anatomical part developmental process system development cellular response to stimulus regulation of biological process regulation of cellular process cell surface receptor signaling pathway developmental process multicellular organism development multicellular organismal process hepaticobiliary system development gland development animal organ development anatomical structure development liver development animal gross anatomical part developmental process system development cellular response to stimulus regulation of biological process regulation of cellular process cell surface receptor signaling pathway response to stimulus signaling biological regulation response to cytokine cytokine-mediated signaling pathway cell communication response to peptide response to chemical cellular process cellular response to cytokine stimulus signal transduction myoblast proliferation cell population proliferation developmental growth cardiac muscle cell proliferation organ growth striated muscle tissue development muscle cell proliferation cardiac muscle tissue growth muscle tissue development striated muscle cell proliferation heart development heart growth cardiac muscle tissue development growth tissue development circulatory system development multi-multicellular organism process reproductive process female pregnancy multi-organism reproductive process regulation of biosynthetic process positive regulation of biological process regulation of macromolecule metabolic process gene expression macromolecule biosynthetic process positive regulation of macromolecule biosynthetic process regulation of gene expression positive regulation of metabolic process biosynthetic process positive regulation of gene expression positive regulation of biosynthetic process regulation of macromolecule biosynthetic process metabolic process positive regulation of macromolecule metabolic process macromolecule metabolic process regulation of metabolic process positive regulation of cellular process response to corticosteroid response to lipid response to hormone response to steroid hormone response to endogenous stimulus response to mineralocorticoid response to glucocorticoid intracellular signal transduction intracellular signaling cassette MAPK cascade small GTPase-mediated signal transduction Ras protein signal transduction positive regulation of cell population proliferation regulation of cell population proliferation regulation of cellular senescence cellular senescence positive regulation of cellular senescence cellular response to stress response to stress response to isolation stress multicellular organismal response to stress response to abiotic stimulus response to gravity positive regulation of cell communication positive regulation of signal transduction regulation of small GTPase mediated signal transduction regulation of signal transduction positive regulation of response to stimulus regulation of intracellular signal transduction regulation of Ras protein signal transduction positive regulation of Ras protein signal transduction regulation of signaling positive regulation of intracellular signal transduction regulation of response to stimulus regulation of cell communication positive regulation of small GTPase mediated signal transduction positive regulation of signaling	cellular anatomical structure anchoring junction cell junction focal adhesion cell-substrate junction membrane intracellular anatomical structure cytoplasm cytosol cell periphery plasma membrane membrane-bounded organelle organelle subcompartment intracellular membrane-bounded organelle cellular anatomical structure anchoring junction cell junction focal adhesion cell-substrate junction membrane intracellular anatomical structure cytoplasm cytosol cell periphery plasma membrane membrane-bounded organelle organelle subcompartment intracellular membrane-bounded organelle endomembrane system endoplasmic reticulum subcompartment intracellular organelle organelle nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum organelle membrane endoplasmic reticulum membrane Golgi membrane Golgi apparatus bounding membrane of organelle mitochondrial membrane mitochondrion organelle outer membrane organelle envelope mitochondrial envelope mitochondrial outer membrane outer membrane cytoplasmic side of plasma membrane cytoplasmic side of membrane side of membrane
B	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 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	HLA-A antigen	-	response to stimulus immune response immune system process antigen processing and presentation antigen processing and presentation of peptide antigen via MHC class I antigen processing and presentation of peptide antigen	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 MHC class I protein complex MHC protein complex cell periphery protein-containing complex plasma membrane protein complex plasma membrane membrane protein complex 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	IPR027417	P-loop containing nucleoside triphosphate hydrolase	Homologous Superfamily
C	IPR005225	Small GTP-binding domain	Domain
C	IPR020849	Small GTPase, Ras-type	Family
C	IPR001806	Small GTPase	Family
B	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
B	IPR003006	Immunoglobulin/major histocompatibility complex, conserved site	Conserved Site
B	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
B	IPR007110	Immunoglobulin-like domain	Domain
B	IPR050160	Major Histocompatibility Complex/Immunoglobulin	Family
B	IPR003597	Immunoglobulin C1-set	Domain
B	IPR015707	Beta-2-Microglobulin	Family
A	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
A	IPR050208	Antigen-presenting and immune regulatory MHC class I-related	Family
A	IPR037055	MHC class I-like antigen recognition-like superfamily	Homologous Superfamily
A	IPR003597	Immunoglobulin C1-set	Domain
A	IPR010579	MHC class I, alpha chain, C-terminal	Domain
A	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A	IPR011161	MHC class I-like antigen recognition-like	Domain
A	IPR011162	MHC classes I/II-like antigen recognition protein	Homologous Superfamily
A	IPR007110	Immunoglobulin-like domain	Domain
A	IPR001039	MHC class I alpha chain, alpha1 alpha2 domains	Domain
A	IPR003006	Immunoglobulin/major histocompatibility complex, conserved site	Conserved Site

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
C	: P01116	Noonan syndrome juvenile myelomonocytic leukemia cardiofaciocutaneous syndrome acute myeloid leukemia gastric cancer cancer Noonan syndrome 3 cholangiocarcinoma Costello syndrome nasopharyngeal carcinoma subependymal giant cell astrocytoma angiosarcoma urinary bladder cancer astrocytic tumor neuroblastoma Noonan syndrome juvenile myelomonocytic leukemia cardiofaciocutaneous syndrome acute myeloid leukemia gastric cancer cancer Noonan syndrome 3 cholangiocarcinoma Costello syndrome nasopharyngeal carcinoma subependymal giant cell astrocytoma angiosarcoma urinary bladder cancer astrocytic tumor neuroblastoma squamous cell carcinoma adenoma cardiofaciocutaneous syndrome 2 ovarian cancer pilocytic astrocytoma non-small cell lung carcinoma endometriosis exocrine pancreatic carcinoma pancreatic ductal adenocarcinoma colorectal cancer uterine cancer myelodysplastic syndrome gastric carcinoma papillary adenoma liver cancer gemistocytic astrocytoma penile neoplasm granular cell carcinoma plasma cell myeloma breast adenocarcinoma nevus, epidermal hereditary diffuse gastric adenocarcinoma adenocarcinoma carcinoma Splenomegaly thyroid gland carcinoma cecal neoplasm anaplastic astrocytoma childhood cerebral astrocytoma autoimmune lymphoproliferative syndrome lung cancer breast cancer protoplasmic astrocytoma malignant colon neoplasm thyroid adenoma cecum cancer Toriello-Lacassie-Droste syndrome fibrillary astrocytoma juvenile pilocytic astrocytoma gallbladder cancer arteriovenous malformations of the brain autoimmune lymphoproliferative syndrome type 4 lung adenocarcinoma prostate cancer lymphoma breast carcinoma sarcomatoid carcinoma intellectual disability intrahepatic cholangiocarcinoma cardiomyopathy malignant pancreatic neoplasm familial pancreatic carcinoma juvenile idiopathic arthritis tubular adenocarcinoma follicular thyroid adenoma anemia microcystic adenoma atypical teratoid rhabdoid tumor congenital anemia uterine disease B-cell chronic lymphocytic leukemia liver neoplasm lung benign neoplasm craniosynostosis benign neoplasm of pancreas lung disease hepatocellular carcinoma Lynch syndrome digestive system disease breast disease encephalocraniocutaneous lipomatosis hydrops fetalis epidermal nevus syndrome oral cavity neoplasm cardiofaciocutaneous syndrome 1 osteosarcoma cerebral astrocytoma ovarian disease medullary thyroid gland carcinoma pancreatic intraductal papillary-mucinous carcinoma colonic neoplasm pancreatic neoplasm linear nevus sebaceus syndrome colorectal carcinoma myopathy gastric neoplasm Parkinson disease glioblastoma benign colon neoplasm Pick disease cribriform carcinoma hematologic disease bile duct cancer dermatomyositis rheumatoid arthritis inflammatory linear verrucous epidermal nevus thyroid gland follicular carcinoma juvenile dermatomyositis cervical carcinoma ovarian neoplasm ulcerative colitis medulloblastoma pancreatic intraductal papillary-mucinous neoplasm large cell medulloblastoma colorectal adenocarcinoma urinary bladder neoplasm astrocytoma (excluding glioblastoma) pancreatitis uterine cervix carcinoma in situ gastrointestinal stromal tumor penile cancer verrucous nevus benign neoplasm lung carcinoma cribriform carcinoma of breast bladder transitional cell carcinoma diffuse astrocytoma psoriasis malignant ependymoma Emery-Dreifuss muscular dystrophy squamous cell lung carcinoma oligodendroglioma thyroid cancer osteogenesis imperfecta thyroid gland papillary carcinoma amyotrophic lateral sclerosis ovarian carcinoma Charcot-Marie-Tooth disease chronic myelomonocytic leukemia undifferentiated carcinoma gallbladder neoplasm pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia
B	: 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 Down syndrome rheumatoid arthritis subependymal giant cell astrocytoma lung cancer lymphoplasmacytic lymphoma osteosarcoma pancreatic intraductal papillary-mucinous neoplasm cancer schizophrenia ulcerative colitis