Structure of PDB 1ecb Chain A Binding Site BS03

Receptor Information
>1ecb Chain A (length=475) Species: 562 (Escherichia coli) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
CGIVGIAGVMPVNQSIYDALTVLQHRGQDAAGIITIDANNCFRLRKANGL
VSDVFEARHMQRLQGNMGIGHVRYPTAGSSSASEAQPFYVNSPYGITLAH
NGNLTNAHELRKKLFEEKRRHINTTSDSEILLNIFASELDNFRHYPLEAD
NIFAAIAATNRLIRGAYACVAMIIGHGMVAFRDPNGIRPLVLGKRDIDEN
RTEYMVASESVALDTLGFDFLRDVAPGEAIYITEEGQLFTRQCADNPVSN
PCLFEYVYFARPDSFIDKISVYSARVNMGTKLGEKIAREWEDLDIDVVIP
IPETSCDIALEIARILGKPYRQGFVKNRYVGRTFIMPKSVRRKLNANRAE
FRDKNVLLVDDSIVRGTTSEQIIEMAREAGAKKVYLASAAPEIRFPNVYG
IDMPSATELIAHGREVDEIRQIIGADGLIFQDLNDLIDAVRAENPDIQQF
ECSVFNGVYVTKDVDQGYLDFLDTL
Ligand information
Ligand ID5GP
InChIInChI=1S/C10H14N5O8P/c11-10-13-7-4(8(18)14-10)12-2-15(7)9-6(17)5(16)3(23-9)1-22-24(19,20)21/h2-3,5-6,9,16-17H,1H2,(H2,19,20,21)(H3,11,13,14,18)/t3-,5-,6-,9-/m1/s1
InChIKeyRQFCJASXJCIDSX-UUOKFMHZSA-N
SMILES
SoftwareSMILES
CACTVS 3.341NC1=Nc2n(cnc2C(=O)N1)[C@@H]3O[C@H](CO[P](O)(O)=O)[C@@H](O)[C@H]3O
CACTVS 3.341NC1=Nc2n(cnc2C(=O)N1)[CH]3O[CH](CO[P](O)(O)=O)[CH](O)[CH]3O
ACDLabs 10.04O=C1c2ncn(c2N=C(N)N1)C3OC(C(O)C3O)COP(=O)(O)O
OpenEye OEToolkits 1.5.0c1nc2c(n1C3C(C(C(O3)COP(=O)(O)O)O)O)N=C(NC2=O)N
OpenEye OEToolkits 1.5.0c1nc2c(n1[C@H]3[C@@H]([C@@H]([C@H](O3)COP(=O)(O)O)O)O)N=C(NC2=O)N
FormulaC10 H14 N5 O8 P
NameGUANOSINE-5'-MONOPHOSPHATE
ChEMBLCHEMBL283807
DrugBankDB01972
ZINCZINC000002159505
PDB chain1ecb Chain A Residue 506 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
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PDB1ecb Coupled formation of an amidotransferase interdomain ammonia channel and a phosphoribosyltransferase active site.
Resolution2.7 Å
Binding residue
(original residue number in PDB)		H25 Y258 A260 R261 R275 P302 E303 T304 K326
Binding residue
(residue number reindexed from 1)		H25 Y258 A260 R261 R275 P302 E303 T304 K326
Annotation score1
Enzymatic activity
Catalytic site (original residue number in PDB) C1 G27 N101 G102 Y258 R321 K326 M336 D444
Catalytic site (residue number reindexed from 1) C1 G27 N101 G102 Y258 R321 K326 M336 D438
Enzyme Commision number 2.4.2.14: amidophosphoribosyltransferase.
Gene Ontology
Molecular Function
GO:0000287 magnesium ion binding
GO:0004044 amidophosphoribosyltransferase activity
GO:0016757 glycosyltransferase activity
GO:0042802 identical protein binding
GO:0046872 metal ion binding
GO:0097216 guanosine tetraphosphate binding
Biological Process
GO:0006164 purine nucleotide biosynthetic process
GO:0006189 'de novo' IMP biosynthetic process
GO:0006541 glutamine metabolic process
GO:0009113 purine nucleobase biosynthetic process
Cellular Component
GO:0005737 cytoplasm
GO:0005829 cytosol

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Molecular Function
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Biological Process
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Cellular Component
External links
PDB RCSB:1ecb, PDBe:1ecb, PDBj:1ecb
PDBsum1ecb
PubMed9333323
UniProtP0AG16|PUR1_ECOLI Amidophosphoribosyltransferase (Gene Name=purF)

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