Structure of PDB 1k27 Chain A

Receptor sequence
>1k27A (length=270) Species: 9606 (Homo sapiens) [Search protein sequence]
AVKIGIIGGTGLDDPEILEGRTEKYVDTPFGKPSDALILGKIKNVDCVLL
ARHGRQHTIMPSKVNYQANIWALKEEGCTHVIVTTACGSLREEIQPGDIV
IIDQFIDRTTMRPQSFYDGSHSCARGVCHIPMAEPFCPKTREVLIETAKK
LGLRCHSKGTMVTIEGPRFSSRAESFMFRTWGADVINMTTVPEVVLAKEA
GICYASIAMATDYDCWEEAVSVDRVLKTLKENANKAKSLLLTTIPQIGST
EWSETLHNLKNMAQFSVLLP
3D structure
PDB1k27 Picomolar transition state analogue inhibitors of human 5'-methylthioadenosine phosphorylase and X-ray structure with MT-immucillin-A
ChainA
Resolution1.95 Å
3D
structure
Catalytic site residues are labeled in the structure
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Enzymatic activity
Catalytic site (original residue number in PDB) T18 P41 H65 I67 M68 A94 M196 T197 D220 D222 V233
Catalytic site (residue number reindexed from 1) T10 P33 H57 I59 M60 A86 M188 T189 D212 D214 V222
Enzyme Commision number 2.4.2.28: S-methyl-5'-thioadenosine phosphorylase.
Interaction with ligand
Site
#		 Ligand Ligand
chain		 Binding residues on receptor
(original residue number in PDB)		 Binding residues on receptor
(residue number reindexed from 1)		 Binding affinity
BS01 PO4 A G17 T18 R60 H61 T93 A94 T197 G9 T10 R52 H53 T85 A86 T189
BS02 MTM A A94 C95 G96 F177 N195 M196 D220 V236 A86 C87 G88 F169 N187 M188 D212 V225 MOAD: Ki=1nM
PDBbind-CN: -logKd/Ki=9.00,Ki=1.0nM
Gene Ontology
Molecular Function
GO:0003824 catalytic activity
GO:0004645 1,4-alpha-oligoglucan phosphorylase activity
GO:0005515 protein binding
GO:0016757 glycosyltransferase activity
GO:0016763 pentosyltransferase activity
GO:0017061 S-methyl-5-thioadenosine phosphorylase activity
Biological Process
GO:0006139 nucleobase-containing compound metabolic process
GO:0006166 purine ribonucleoside salvage
GO:0006738 nicotinamide riboside catabolic process
GO:0009116 nucleoside metabolic process
GO:0019509 L-methionine salvage from methylthioadenosine
GO:0032259 methylation
GO:0033574 response to testosterone
Cellular Component
GO:0005634 nucleus
GO:0005654 nucleoplasm
GO:0005737 cytoplasm
GO:0005829 cytosol
GO:0070062 extracellular exosome

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Molecular Function
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Biological Process
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Cellular Component
External links
PDB RCSB:1k27, PDBe:1k27, PDBj:1k27
PDBsum1k27
PubMed14705926
UniProtQ13126|MTAP_HUMAN S-methyl-5'-thioadenosine phosphorylase (Gene Name=MTAP)

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