Structure of PDB 1nc3 Chain B Binding Site BS01

Receptor Information
>1nc3 Chain B (length=230) Species: 562 (Escherichia coli) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
MKIGIIGAMEEEVTLLRDKIENRQTISLGGCEIYTGQLNGTEVALLKSGI
GKVAAALGATLLLEHCKPDVIINTGSAGGLAPTLKVGDIVVSDEARYHDA
DVTAFGYEYGQLPGCPAGFKADDKLIAAAEACIAELNLNAVRGLIVSGDA
FINGSVGLAKIRHNFPQAIAVEMEATAIAHVCHNFNVPFVVVRAISDVAD
QQSHLSFDEFLAVAAKQSSLMVESLVQKLA
Ligand information
Ligand IDFMC
InChIInChI=1S/C10H13N5O4/c11-10-6-4(12-2-13-10)5(14-15-6)9-8(18)7(17)3(1-16)19-9/h2-3,7-9,16-18H,1H2,(H,14,15)(H2,11,12,13)/t3-,7-,8-,9+/m1/s1
InChIKeyKBHMEHLJSZMEMI-KSYZLYKTSA-N
SMILES
SoftwareSMILES
CACTVS 3.370Nc1ncnc2c1[nH]nc2[C@@H]3O[C@H](CO)[C@@H](O)[C@H]3O
CACTVS 3.370Nc1ncnc2c1[nH]nc2[CH]3O[CH](CO)[CH](O)[CH]3O
ACDLabs 12.01OC1C(OC(CO)C1O)c3nnc2c3ncnc2N
OpenEye OEToolkits 1.7.0c1nc2c(c(n1)N)[nH]nc2C3C(C(C(O3)CO)O)O
OpenEye OEToolkits 1.7.0c1nc2c(c(n1)N)[nH]nc2[C@H]3[C@@H]([C@@H]([C@H](O3)CO)O)O
FormulaC10 H13 N5 O4
Name(1S)-1-(7-amino-1H-pyrazolo[4,3-d]pyrimidin-3-yl)-1,4-anhydro-D-ribitol
ChEMBLCHEMBL471524
DrugBankDB02281
ZINCZINC000018275505
PDB chain1nc3 Chain B Residue 234 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
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PDB1nc3 Structure of Escherichia coli 5'-methylthioadenosine/ S-adenosylhomocysteine nucleosidase inhibitor complexes provide insight into the conformational changes required for substrate binding and catalysis.
Resolution2.2 Å
Binding residue
(original residue number in PDB)		S76 A77 F151 I152 E172 M173 E174 D197 A199
Binding residue
(residue number reindexed from 1)		S76 A77 F151 I152 E172 M173 E174 D197 A199
Annotation score1
Binding affinityMOAD: Ki=10uM
PDBbind-CN: -logKd/Ki=5.00,Ki=10uM
Enzymatic activity
Enzyme Commision number 3.2.2.9: adenosylhomocysteine nucleosidase.
Gene Ontology
Molecular Function
GO:0003824 catalytic activity
GO:0008782 adenosylhomocysteine nucleosidase activity
GO:0008930 methylthioadenosine nucleosidase activity
GO:0016787 hydrolase activity
GO:0042802 identical protein binding
GO:0042803 protein homodimerization activity
Biological Process
GO:0009086 methionine biosynthetic process
GO:0009116 nucleoside metabolic process
GO:0009164 nucleoside catabolic process
GO:0019284 L-methionine salvage from S-adenosylmethionine
GO:0019509 L-methionine salvage from methylthioadenosine
GO:0046124 purine deoxyribonucleoside catabolic process
GO:0110052 toxic metabolite repair
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:1nc3, PDBe:1nc3, PDBj:1nc3
PDBsum1nc3
PubMed12496243
UniProtP0AF12|MTNN_ECOLI 5'-methylthioadenosine/S-adenosylhomocysteine nucleosidase (Gene Name=mtnN)

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