1UVQ

Crystal structure of HLA-DQ0602 in complex with a hypocretin peptide

External Resource: Annotation

Domain Annotation: SCOP/SCOPe Classification
Domain Annotation: SCOP2 Classification
Domain Annotation: ECOD Classification
Domain Annotation: CATH
IMGT Antibody Annotation
Protein Family Annotation
Gene Ontology: Gene Product Annotation
InterPro: Protein Family Classification
Pharos: Disease Associations

Domain Annotation: SCOP/SCOPe Classification SCOP-e Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1uvqa1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	C1 set domains (antibody constant domain-like)	Class II MHC alpha chain, C-terminal domain	HUMAN (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
A	d1uvqa2	Alpha and beta proteins (a+b)	MHC antigen-recognition domain	MHC antigen-recognition domain	MHC antigen-recognition domain	Class II MHC alpha chain, N-terminal domain	HUMAN (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d1uvqb1	All beta proteins	Immunoglobulin-like beta-sandwich	Immunoglobulin	C1 set domains (antibody constant domain-like)	Class II MHC beta chain, C-terminal domain	HUMAN (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d1uvqb2	Alpha and beta proteins (a+b)	MHC antigen-recognition domain	MHC antigen-recognition domain	MHC antigen-recognition domain	Class II MHC beta chain, N-terminal domain	HUMAN (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)

Domain Annotation: SCOP2 Classification SCOP2 Database Homepage

Chains	Type	Family Name	Domain Identifier	Family Identifier	Provenance Source (Version)
A	SCOP2 Family	C1 set domains-like	8054676	4000202	SCOP2 (2022-06-29)
A	SCOP2 Family	MHC antigen-recognition domain	8022794	4001031	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	Immunoglobulin (Ig) domain-like	8054677	3000071	SCOP2 (2022-06-29)
A	SCOP2 Superfamily	MHC antigen-recognition domain	8035174	3000521	SCOP2 (2022-06-29)
B	SCOP2B Superfamily	Immunoglobulin (Ig) domain-like	8055664	3000071	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	MHC antigen-recognition domain	8034484	3000521	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)
A	C1-set_2	e1uvqA1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: C1-set_2	ECOD (1.6)
A	MHC_II_alpha	e1uvqA2	A: a+b two layers	X: MHC antigen-recognition domain (From Topology)	H: MHC antigen-recognition domain (From Topology)	T: MHC antigen-recognition domain	F: MHC_II_alpha	ECOD (1.6)
B	C1-set_2	e1uvqB1	A: beta sandwiches	X: Immunoglobulin-like beta-sandwich	H: Immunoglobulin-related	T: Immunoglobulin/Fibronectin type III/E set domains/PapD-like	F: C1-set_2	ECOD (1.6)
B	MHC_II_alpha	e1uvqB2	A: a+b two layers	X: MHC antigen-recognition domain (From Topology)	H: MHC antigen-recognition domain (From Topology)	T: MHC antigen-recognition domain	F: MHC_II_alpha	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.10.320.10	Alpha Beta	Roll	Class II Histocompatibility Antigen, M Beta Chain	Chain B, domain 1	CATH (4.3.0)
A	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)
B	3.10.320.10	Alpha Beta	Roll	Class II Histocompatibility Antigen, M Beta Chain	Chain B, domain 1	CATH (4.3.0)
B	2.60.40.10	Mainly Beta	Sandwich	Immunoglobulin-like	Immunoglobulins	CATH (4.3.0)

IMGT Antibody Annotation IMGT Database Homepage

Chain	Protein Name	Description	Organism Name	Gene Allele Name(s)	Domain Name(s)	Receptor Type	Receptor Description	Provenance Source
A	MH2 HLA-DQA1*0102	II-ALPHA	Homo sapiens (human)	HLA-DQA1*0102	G-DOMAIN G-ALPHA, C-LIKE-DOMAIN C-LIKE	MH	MH2-ALPHA_BETA	IMGT (202415-0)
B	MH2 HLA-DQA1*0102	II-BETA	Homo sapiens (human)	HLA-DQB1*0602	G-DOMAIN G-BETA, C-LIKE-DOMAIN C-LIKE	MH	MH2-ALPHA_BETA	IMGT (202415-0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF07654	Immunoglobulin C1-set domain (C1-set)	Immunoglobulin C1-set domain	-	Domain
A	PF00993	Class II histocompatibility antigen, alpha domain (MHC_II_alpha)	Class II histocompatibility antigen, alpha domain	-	Domain
B	PF00969	Class II histocompatibility antigen, beta domain (MHC_II_beta)	Class II histocompatibility antigen, beta domain	-	Domain
B	PF07654	Immunoglobulin C1-set domain (C1-set)	Immunoglobulin C1-set domain	-	Domain
C	PF02072	Prepro-orexin (Orexin)	Prepro-orexin	-	Family

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	HLA CLASS II HISTOCOMPATIBILITY ANTIGEN	cation binding ion binding binding metal ion binding small molecule binding	antigen processing and presentation antigen processing and presentation of peptide or polysaccharide antigen via MHC class II immune system process response to stimulus immune response adaptive immune response	vacuolar membrane membrane-bounded organelle intracellular anatomical structure membrane lytic vacuole vacuole cellular anatomical entity intracellular membrane-bounded organelle intracellular organelle lytic vacuole membrane bounding membrane of organelle organelle lysosomal membrane cytoplasm vacuolar membrane membrane-bounded organelle intracellular anatomical structure membrane lytic vacuole vacuole cellular anatomical entity intracellular membrane-bounded organelle intracellular organelle lytic vacuole membrane bounding membrane of organelle organelle lysosomal membrane cytoplasm organelle membrane lysosome MHC protein complex cell periphery MHC class II protein complex protein-containing complex plasma membrane protein complex plasma membrane membrane protein complex endosome membrane endosome intracellular vesicle endomembrane system cytoplasmic vesicle membrane vesicle membrane cytoplasmic vesicle vesicle
B	HLA CLASS II HISTOCOMPATIBILITY ANTIGEN	binding antigen binding peptide antigen binding peptide binding protein-containing complex binding MHC protein complex binding MHC class II protein complex binding molecular transducer activity transmembrane signaling receptor activity signaling receptor activity MHC class II receptor activity immune receptor activity	regulation of biological process response to stimulus immune response biological regulation positive regulation of biological process positive regulation of response to stimulus positive regulation of immune response regulation of response to stimulus immune system process regulation of immune response regulation of immune system process positive regulation of immune system process cellular response to stimulus immune response-regulating cell surface receptor signaling pathway regulation of biological process response to stimulus immune response biological regulation positive regulation of biological process positive regulation of response to stimulus positive regulation of immune response regulation of response to stimulus immune system process regulation of immune response regulation of immune system process positive regulation of immune system process cellular response to stimulus immune response-regulating cell surface receptor signaling pathway regulation of cellular process signaling cell communication immune response-activating signaling pathway immune response-regulating signaling pathway signal transduction cell surface receptor signaling pathway immune response-activating cell surface receptor signaling pathway T cell receptor signaling pathway cellular process antigen receptor-mediated signaling pathway activation of immune response adaptive immune response humoral immune response antigen processing and presentation of exogenous peptide antigen via MHC class II antigen processing and presentation antigen processing and presentation of peptide or polysaccharide antigen via MHC class II antigen processing and presentation of peptide antigen via MHC class II antigen processing and presentation of exogenous peptide antigen antigen processing and presentation of peptide antigen antigen processing and presentation of exogenous antigen peptide antigen assembly with MHC class II protein complex protein-containing complex organization peptide antigen assembly with MHC protein complex MHC class II protein complex assembly cellular component organization cellular component biogenesis cellular component assembly protein-containing complex assembly MHC protein complex assembly cellular component organization or biogenesis multicellular organismal process 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 multicellular organismal process regulation of cell-cell adhesion positive regulation of cellular process 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 positive regulation of multicellular organismal process regulation of lymphocyte activation	membrane cellular anatomical entity membrane-bounded organelle intracellular anatomical structure intracellular vesicle intracellular organelle bounding membrane of organelle cytoplasmic vesicle vesicle membrane clathrin-coated vesicle endocytic vesicle membrane coated vesicle vesicle endocytic vesicle membrane cellular anatomical entity membrane-bounded organelle intracellular anatomical structure intracellular vesicle intracellular organelle bounding membrane of organelle cytoplasmic vesicle vesicle membrane clathrin-coated vesicle endocytic vesicle membrane coated vesicle 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 organelle cytoplasm organelle membrane MHC protein complex cell periphery MHC class II protein complex protein-containing complex plasma membrane protein complex plasma membrane membrane protein complex endosome membrane endosome late endosome membrane endomembrane system late endosome organelle subcompartment lumenal side of endoplasmic reticulum membrane side of membrane lumenal side of membrane endoplasmic reticulum subcompartment nuclear outer membrane-endoplasmic reticulum membrane network endoplasmic reticulum endoplasmic reticulum membrane vacuolar membrane lytic vacuole vacuole lytic vacuole membrane lysosomal membrane lysosome Golgi membrane Golgi apparatus Golgi apparatus subcompartment trans-Golgi network membrane trans-Golgi network transport vesicle transport vesicle membrane COPII-coated ER to Golgi transport vesicle ER to Golgi transport vesicle membrane
C	OREXIN	binding molecular function activator activity signaling receptor binding neuropeptide activity signaling receptor activator activity hormone activity protein binding molecular function regulator activity neuropeptide hormone activity signaling receptor regulator activity receptor ligand activity type 2 orexin receptor binding orexin receptor binding G protein-coupled receptor binding binding molecular function activator activity signaling receptor binding neuropeptide activity signaling receptor activator activity hormone activity protein binding molecular function regulator activity neuropeptide hormone activity signaling receptor regulator activity receptor ligand activity type 2 orexin receptor binding orexin receptor binding G protein-coupled receptor binding neuropeptide receptor binding type 1 orexin receptor binding	cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation cell communication G protein-coupled receptor signaling pathway cellular process signal transduction neuropeptide signaling pathway negative regulation of potassium ion transport regulation of localization regulation of potassium ion transport cellular response to stimulus regulation of biological process regulation of cellular process response to stimulus signaling biological regulation cell communication G protein-coupled receptor signaling pathway cellular process signal transduction neuropeptide signaling pathway negative regulation of potassium ion transport regulation of localization regulation of potassium ion transport transport regulation of transport negative regulation of monoatomic ion transport regulation of monoatomic ion transport negative regulation of biological process negative regulation of transport establishment of localization metal ion transport localization monoatomic ion transport potassium ion transport monoatomic cation transport regulation of metal ion transport positive regulation of cytosolic calcium ion concentration regulation of biological quality positive regulation of cell communication multicellular organismal process system process nervous system process regulation of system process positive regulation of biological process positive regulation of transmission of nerve impulse transmission of nerve impulse regulation of nervous system process regulation of transmission of nerve impulse positive regulation of nervous system process positive regulation of multicellular organismal process regulation of cell communication regulation of multicellular organismal process positive regulation of cellular process negative regulation of nervous system process negative regulation of transmission of nerve impulse negative regulation of cell communication negative regulation of cellular process negative regulation of multicellular organismal process protein kinase C-activating G protein-coupled receptor signaling pathway behavior eating behavior feeding behavior cellular localization modulation of chemical synaptic transmission synaptic signaling regulation of secretion by cell secretion by cell signal release establishment of localization in cell trans-synaptic signaling regulation of signaling neurotransmitter secretion secretion regulation of neurotransmitter transport export from cell cell-cell signaling neurotransmitter transport regulation of secretion chemical synaptic transmission signal release from synapse regulation of trans-synaptic signaling regulation of neurotransmitter secretion anterograde trans-synaptic signaling sleep regulation of postsynaptic membrane potential chemical synaptic transmission, postsynaptic cell surface receptor signaling pathway excitatory postsynaptic potential regulation of membrane potential homeostatic process adaptive thermogenesis positive regulation of metabolic process multicellular organismal-level homeostasis regulation of cold-induced thermogenesis cold-induced thermogenesis temperature homeostasis positive regulation of cold-induced thermogenesis metabolic process regulation of metabolic process phospholipase C-activating G protein-coupled receptor signaling pathway regulation of calcium ion transport positive regulation of calcium ion transport calcium ion transport positive regulation of transport positive regulation of monoatomic ion transport regulation of primary metabolic process nucleobase-containing compound metabolic process organic substance metabolic process negative regulation of nucleobase-containing compound metabolic process regulation of nucleobase-containing compound metabolic process negative regulation of macromolecule metabolic process negative regulation of DNA replication negative regulation of metabolic process primary metabolic process regulation of macromolecule metabolic process DNA metabolic process nucleic acid metabolic process organic cyclic compound metabolic process DNA replication negative regulation of DNA metabolic process macromolecule metabolic process regulation of DNA metabolic process regulation of DNA replication response to nutrient levels response to stress response to starvation	membrane-bounded organelle intracellular anatomical structure intracellular vesicle cellular anatomical entity intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle organelle secretory granule secretory vesicle cytoplasm vesicle rough endoplasmic reticulum membrane-bounded organelle intracellular anatomical structure intracellular vesicle cellular anatomical entity intracellular membrane-bounded organelle endomembrane system intracellular organelle cytoplasmic vesicle organelle secretory granule secretory vesicle cytoplasm vesicle rough endoplasmic reticulum endoplasmic reticulum extracellular region perinuclear region of cytoplasm postsynapse synapse cell junction transport vesicle presynapse synaptic vesicle exocytic vesicle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
A	IPR014745	MHC class II, alpha/beta chain, N-terminal	Homologous Superfamily
A	IPR003597	Immunoglobulin C1-set	Domain
A	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
A	IPR011162	MHC classes I/II-like antigen recognition protein	Homologous Superfamily
A	IPR007110	Immunoglobulin-like domain	Domain
A	IPR001003	MHC class II, alpha chain, N-terminal	Domain
A	IPR003006	Immunoglobulin/major histocompatibility complex, conserved site	Conserved Site
B	IPR036179	Immunoglobulin-like domain superfamily	Homologous Superfamily
B	IPR003597	Immunoglobulin C1-set	Domain
B	IPR011162	MHC classes I/II-like antigen recognition protein	Homologous Superfamily
B	IPR003006	Immunoglobulin/major histocompatibility complex, conserved site	Conserved Site
B	IPR000353	MHC class II, beta chain, N-terminal	Domain
B	IPR014745	MHC class II, alpha/beta chain, N-terminal	Homologous Superfamily
B	IPR013783	Immunoglobulin-like fold	Homologous Superfamily
B	IPR007110	Immunoglobulin-like domain	Domain
C	IPR001704	Prepro-orexin	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
B	Pharos: P01920	narcolepsy achalasia oropharynx cancer urticaria angioedema celiac disease type 1 diabetes mellitus IgA glomerulonephritis bullous pemphigoid systemic sclerosis megaesophagus Creutzfeldt Jacob disease Drug Eruptions narcolepsy-cataplexy syndrome juvenile idiopathic arthritis narcolepsy achalasia oropharynx cancer urticaria angioedema celiac disease type 1 diabetes mellitus IgA glomerulonephritis bullous pemphigoid systemic sclerosis megaesophagus Creutzfeldt Jacob disease Drug Eruptions narcolepsy-cataplexy syndrome juvenile idiopathic arthritis multiple sclerosis allergic disease asthma malignant colon neoplasm ulcerative colitis diffuse scleroderma narcolepsy without cataplexy nephrosclerosis ductal breast carcinoma in situ alopecia areata glioblastoma pancreatic intraductal papillary-mucinous carcinoma astrocytic tumor inherited Creutzfeldt-Jakob disease pilocytic astrocytoma breast carcinoma juvenile dermatomyositis rosacea C1 inhibitor deficiency large cell medulloblastoma subependymal giant cell astrocytoma cerebrovascular disorder lung carcinoma tuberculosis malignant pancreatic neoplasm Crohn disease multiple sclerosis, susceptibility to 1 drug-induced liver injury acquired metabolic disease esophageal adenocarcinoma ovarian cancer idiopathic achalasia pancreatic intraductal papillary-mucinous neoplasm atypical teratoid rhabdoid tumor interstitial cystitis pituitary cancer schizophrenia limb-girdle muscular dystrophy lymphoplasmacytic lymphoma medulloblastoma cystic fibrosis neoplasm of oropharynx Duchenne muscular dystrophy non-small cell lung carcinoma exocrine pancreatic carcinoma pancreatic ductal adenocarcinoma pancreatic intraductal papillary-mucinous neoplasm with low grade dysplasia autoimmune disease invasive ductal breast carcinoma rheumatoid arthritis Kleine-Levin syndrome Sjogren syndrome celiac disease, susceptibility to, 1 lung cancer
C	Pharos: O43612	narcolepsy 1 narcolepsy-cataplexy syndrome cocaine abuse Pain cocaine dependence substance withdrawal syndrome narcolepsy obesity disorder heart disease neurodegenerative disease sleep-wake disorder vitiligo cannabis dependence hypothyroidism narcolepsy without cataplexy narcolepsy 1 narcolepsy-cataplexy syndrome cocaine abuse Pain cocaine dependence substance withdrawal syndrome narcolepsy obesity disorder heart disease neurodegenerative disease sleep-wake disorder vitiligo cannabis dependence hypothyroidism narcolepsy without cataplexy depressive disorder Hashimoto thyroiditis Kleine-Levin syndrome

RCSB PDB Core Operations are funded by the National Science Foundation (DBI-1832184), 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.