1CG6 | pdb_00001cg6

STRUCTURE OF HUMAN 5'-DEOXY-5'-METHYLTHIOADENOSINE PHOSPHORYLASE COMPLEXED WITH 5'-DEOXY-5'-METHYLTHIOADENOSINE AND SULFATE AT 1.7 A RESOLUTION

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
Structure Motif: Primary M-CSA Annotation

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

Chains	Domain Info	Class	Fold	Superfamily	Family	Domain	Species	Provenance Source (Version)
A	d1cg6a_	Alpha and beta proteins (a/b)	Phosphorylase/hydrolase-like	Purine and uridine phosphorylases	Purine and uridine phosphorylases	5'-deoxy-5'-methylthioadenosine phosphorylase	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	Purine and uridine phosphorylases	8036168	3000626	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	Abhydrolase_1	e1cg6A1	A: alpha arrays	X: C-terminal subdomain in Lon-related proteases catalytic domains	H: C-terminal subdomain in Lon-related proteases catalytic domains	T: C-terminal subdomain in Lon-related proteases catalytic domains	F: Abhydrolase_1	ECOD (v295.2)

Domain Annotation: CATH CATH Database Homepage

Chain	Domain	Class	Architecture	Topology	Homology	Provenance Source (Version)
A	3.40.50.1580	Alpha Beta	3-Layer(aba) Sandwich	Rossmann fold	Nucleoside phosphorylase domain	CATH (4.3.0)

Protein Family Annotation Pfam Database Homepage

Chains	Accession	Name	Description	Comments	Source
A	PF01048	Phosphorylase superfamily (PNP_UDP_1)	Phosphorylase superfamily	Members of this family include: purine nucleoside phosphorylase (PNP) Uridine phosphorylase (UdRPase) 5'-methylthioadenosine phosphorylase (MTA phosphorylase)	Domain

Gene Ontology: Gene Product Annotation Gene Ontology Database Homepage

Chains	Polymer	Molecular Function	Biological Process	Cellular Component
A	PROTEIN (5'-DEOXY-5'-METHYLTHIOADENOSINE PHOSPHORYLASE)	1,4-alpha-oligoglucan phosphorylase activity glycosyltransferase activity transferase activity hexosyltransferase activity catalytic activity pentosyltransferase activity S-methyl-5-thioadenosine phosphorylase activity purine-nucleoside phosphorylase activity	nucleobase-containing compound metabolic process primary metabolic process metabolic process cellular process nucleobase-containing small molecule metabolic process carbohydrate derivative metabolic process small molecule metabolic process nucleoside metabolic process	cellular anatomical structure intracellular anatomical structure cytoplasm cytosol extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle vesicle extracellular membrane-bounded organelle intracellular organelle nucleus cellular anatomical structure intracellular anatomical structure cytoplasm cytosol extracellular exosome membrane-bounded organelle extracellular vesicle extracellular organelle extracellular region organelle vesicle extracellular membrane-bounded organelle intracellular organelle nucleus intracellular membrane-bounded organelle

InterPro: Protein Family Classification InterPro Database Homepage

Chains	Accession	Name	Type
A	IPR010044	Methylthioadenosine phosphorylase (MTAP)	Family
A	IPR035994	Nucleoside phosphorylase superfamily	Homologous Superfamily
A	IPR018099	Purine phosphorylase, family 2, conserved site	Conserved Site
A	IPR000845	Nucleoside phosphorylase domain	Domain

Pharos: Disease Associations Pharos Homepage Annotation

Chains	Drug Target	Associated Disease
A	: Q13126	melanoma diaphyseal medullary stenosis-bone malignancy syndrome prostate cancer cutaneous melanoma non-small cell lung carcinoma ovarian carcinoma psoriasis acute lymphoblastic leukemia skin neoplasm brain glioma Diaphyseal medullary stenosis with bone malignancy glioblastoma large cell medulloblastoma malignant mesothelioma open-angle glaucoma melanoma diaphyseal medullary stenosis-bone malignancy syndrome prostate cancer cutaneous melanoma non-small cell lung carcinoma ovarian carcinoma psoriasis acute lymphoblastic leukemia skin neoplasm brain glioma Diaphyseal medullary stenosis with bone malignancy glioblastoma large cell medulloblastoma malignant mesothelioma open-angle glaucoma plasma cell myeloma prostate carcinoma sarcoma adrenal cortex carcinoma breast carcinoma heart disease lung adenocarcinoma medulloblastoma ovarian cancer primitive neuroectodermal tumor skin basal cell carcinoma B-cell acute lymphoblastic leukemia inflammatory bowel disease lung carcinoma melanocytic nevus

Structure Motif Annotation: Mechanism and Catalytic Site Atlas M-CSA Database Homepage

Chains	Enzyme Name	Description	Catalytic Residues
A	S-methyl-5'-thioadenosine phosphorylase M-CSA #244	S-methyl-5'-thioadenosine phosphorylase (MTAP) catalyses the reversible phosphorylation of S-methyl-5'-thioadenosine (MTA) to adenine and 5-methylthioribose-1-phosphate. It is involved in the breakdown of MTA, a major by-product of polyamine biosynthesis. It is responsible for the first step in the methionine salvage pathway after MTA has been generated from S-adenosylmethionine. It has broad substrate specificity with 6-aminopurine nucleosides as preferred substrates. Despite being also an MTA phosphorylase, the MTAP in thermophilic Sulfolobus solfataricus only has 14% sequence homology to human MTAP.	Defined by 2 residues: ASP:A-220ASP:A-222 \| Explore in 3D: M-CSA Motif Definition Search M-CSA Motif EC: 2.4.2.28 (PDB Primary Data) Search M-CSA Motif + EC 2.4.2.28