Structure of PDB 1rb7 Chain B Binding Site BS01

Receptor Information
>1rb7 Chain B (length=152) Species: 4932 (Saccharomyces cerevisiae) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
ASKWDQKGMDIAYEEAALGYKEGGVPIGGCLINNKDGSVLGRGHNMRFQK
GSATLHGEISTLENCGRLEGKVYKDTTLYTTLSPCDMCTGAIIMYGIPRC
VVGENVNFKSKGEKYLQTRGHEVVVVDDERCKKIMKQFIDERPQDWFEDI
GE
Ligand information
Ligand IDZN
InChIInChI=1S/Zn/q+2
InChIKeyPTFCDOFLOPIGGS-UHFFFAOYSA-N
SMILES
SoftwareSMILES
CACTVS 3.341[Zn++]
ACDLabs 10.04
OpenEye OEToolkits 1.5.0		[Zn+2]
FormulaZn
NameZINC ION
ChEMBLCHEMBL1236970
DrugBankDB14532
ZINC
PDB chain1rb7 Chain B Residue 401 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
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PDB1rb7 Microseed matrix screening to improve crystals of yeast cytosine deaminase.
Resolution2.1 Å
Binding residue
(original residue number in PDB)		H62 C91 C94
Binding residue
(residue number reindexed from 1)		H56 C85 C88
Annotation score1
Enzymatic activity
Catalytic site (original residue number in PDB) H62 E64 S89 C91 C94
Catalytic site (residue number reindexed from 1) H56 E58 S83 C85 C88
Enzyme Commision number 3.5.4.1: cytosine deaminase.
Gene Ontology
Molecular Function
GO:0003824 catalytic activity
GO:0004131 cytosine deaminase activity
GO:0008270 zinc ion binding
GO:0008835 diaminohydroxyphosphoribosylaminopyrimidine deaminase activity
GO:0016787 hydrolase activity
GO:0016814 hydrolase activity, acting on carbon-nitrogen (but not peptide) bonds, in cyclic amidines
GO:0019239 deaminase activity
GO:0046872 metal ion binding
Biological Process
GO:0008655 pyrimidine-containing compound salvage
GO:0019858 cytosine metabolic process
GO:0034654 nucleobase-containing compound biosynthetic process
GO:0044206 UMP salvage
GO:0046087 cytidine metabolic process
Cellular Component
GO:0005634 nucleus
GO:0005737 cytoplasm

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Molecular Function
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Biological Process
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Cellular Component
External links
PDB RCSB:1rb7, PDBe:1rb7, PDBj:1rb7
PDBsum1rb7
PubMed14993707
UniProtQ12178|FCY1_YEAST Cytosine deaminase (Gene Name=FCY1)

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