2AOX

Histamine Methyltransferase (Primary Variant T105) Complexed with the Acetylcholinesterase Inhibitor and Altzheimer's Disease Drug Tacrine

External Resource: Annotation

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

Domain Annotation: SCOP/SCOPe Classification SCOP Database Homepage

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d2aoxa_	Alpha and beta proteins (a/b)	S-adenosyl-L-methionine-dependent methyltransferases	S-adenosyl-L-methionine-dependent methyltransferases	Histamine methyltransferase	Histamine methyltransferase	human (Homo sapiens ) [TaxId: 9606 ],	SCOPe (2.08)
B	d2aoxb_	Alpha and beta proteins (a/b)	S-adenosyl-L-methionine-dependent methyltransferases	S-adenosyl-L-methionine-dependent methyltransferases	Histamine methyltransferase	Histamine methyltransferase	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	SCOP2B Superfamily	S-adenosyl-L-methionine-dependent methyltransferases	8039969	3000118	SCOP2B (2022-06-29)
B	SCOP2B Superfamily	S-adenosyl-L-methionine-dependent methyltransferases	8039969	3000118	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	Methyltransf_11_3	e2aoxA1	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: S-adenosyl-L-methionine-dependent methyltransferases	F: Methyltransf_11_3	ECOD (1.6)
B	Methyltransf_11_3	e2aoxB1	A: a/b three-layered sandwiches	X: Rossmann-like	H: Rossmann-related	T: S-adenosyl-L-methionine-dependent methyltransferases	F: Methyltransf_11_3	ECOD (1.6)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.150	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Vaccinia Virus protein VP39	CATH (4.3.0)
B	3.40.50.150	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Vaccinia Virus protein VP39	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A, B	PF13489	Methyltransferase domain (Methyltransf_23)	Methyltransferase domain	This family appears to be a methyltransferase domain.	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A, B	Histamine N-methyltransferase	histamine N-methyltransferase activity transferase activity, transferring one-carbon groups N-methyltransferase activity transferase activity methyltransferase activity catalytic activity S-adenosylmethionine-dependent methyltransferase activity	organonitrogen compound catabolic process catabolic process organonitrogen compound metabolic process oxoacid metabolic process cellular metabolic process carboxylic acid metabolic process histidine catabolic process organic acid catabolic process organic acid metabolic process cellular catabolic process organic substance metabolic process carboxylic acid catabolic process small molecule metabolic process metabolic process organonitrogen compound catabolic process catabolic process organonitrogen compound metabolic process oxoacid metabolic process cellular metabolic process carboxylic acid metabolic process histidine catabolic process organic acid catabolic process organic acid metabolic process cellular catabolic process organic substance metabolic process carboxylic acid catabolic process small molecule metabolic process metabolic process cellular process histidine metabolic process small molecule catabolic process organic substance catabolic process ammonium ion metabolic process organic cyclic compound metabolic process amine metabolic process imidazole-containing compound metabolic process biogenic amine metabolic process histamine metabolic process methylation multicellular organismal process respiratory gaseous exchange by respiratory system histamine catabolic process imidazole-containing compound catabolic process cellular biogenic amine catabolic process organic cyclic compound catabolic process amine catabolic process	extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle extracellular space cellular anatomical entity vesicle extracellular membrane-bounded organelle intracellular organelle centrosome microtubule organizing center intracellular anatomical structure extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle extracellular space cellular anatomical entity vesicle extracellular membrane-bounded organelle intracellular organelle centrosome microtubule organizing center intracellular anatomical structure cytoskeleton intracellular non-membrane-bounded organelle microtubule cytoskeleton non-membrane-bounded organelle cytoplasm cytosol nucleus membrane-enclosed lumen intracellular membrane-bounded organelle intracellular organelle lumen nucleoplasm organelle lumen nuclear lumen

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A, B	IPR029063	S-adenosyl-L-methionine-dependent methyltransferase superfamily	Homologous Superfamily
A, B	IPR016673	Histamine N-methyltransferase-like	Family

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A, B	Pharos: P50135	rhinitis intellectual disability, autosomal recessive 51 urticaria drug allergy asthma lung cancer malignant glioma non-small cell lung carcinoma pilocytic astrocytoma adrenal cortex carcinoma astrocytic tumor ulcerative colitis cystic fibrosis ductal breast carcinoma in situ glioblastoma rhinitis intellectual disability, autosomal recessive 51 urticaria drug allergy asthma lung cancer malignant glioma non-small cell lung carcinoma pilocytic astrocytoma adrenal cortex carcinoma astrocytic tumor ulcerative colitis cystic fibrosis ductal breast carcinoma in situ glioblastoma juvenile dermatomyositis lung carcinoma malignant mesothelioma oligodendroglioma polycystic ovary syndrome Alcoholic Intoxication, Chronic subependymal giant cell astrocytoma atypical teratoid rhabdoid tumor Emery-Dreifuss muscular dystrophy inherited susceptibility to asthma interstitial cystitis large cell medulloblastoma malignant ependymoma medulloblastoma ovarian cancer primitive neuroectodermal tumor tuberculosis breast cancer Duchenne muscular dystrophy Gaucher disease intellectual disability invasive ductal breast carcinoma

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.