Structure of PDB 2pe5 Chain A Binding Site BS03

Receptor Information
>2pe5 Chain A (length=328) Species: 562 (Escherichia coli) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
KPVTLYDVAEYAGVSYQTVSRVVNQASHVSAKTREKVEAAMAELNYIPNR
VAQQLAGKQLLLIGVATSSLALHAPSQIVAAIKSRADQLGASVVVSMVER
SGVEACKAAVHNLLAQRVSGLIINYPLDDQDAIAVEAACTNVPALFLDVS
DQTPINSIIFSHEDGTRLGVEHLVALGHQQIALLAGPLSSVSARLRLAGW
HKYLTRNQIQPIAEREGDWSAMSGFQQTMQMLNEGIVPTAMLVANDQMAL
GAMRAITESGLRVGADISVVGYDDTEDSSCYIPPLTTIKQDFRLLGQTSV
DRLLQLSQGQAVKGNQLLPVSLVKRKTT
Ligand information
Ligand ID145
InChIInChI=1S/C12H15NO8/c14-5-8-9(15)10(16)11(17)12(21-8)20-7-4-2-1-3-6(7)13(18)19/h1-4,8-12,14-17H,5H2/t8-,9+,10+,11-,12-/m1/s1
InChIKeyKUWPCJHYPSUOFW-YBXAARCKSA-N
SMILES
SoftwareSMILES
ACDLabs 10.04[O-][N+](=O)c2c(OC1OC(C(O)C(O)C1O)CO)cccc2
OpenEye OEToolkits 1.5.0c1ccc(c(c1)[N+](=O)[O-])OC2C(C(C(C(O2)CO)O)O)O
OpenEye OEToolkits 1.5.0c1ccc(c(c1)[N+](=O)[O-])O[C@H]2[C@@H]([C@H]([C@H]([C@H](O2)CO)O)O)O
CACTVS 3.341OC[C@H]1O[C@@H](Oc2ccccc2[N+]([O-])=O)[C@H](O)[C@@H](O)[C@H]1O
CACTVS 3.341OC[CH]1O[CH](Oc2ccccc2[N+]([O-])=O)[CH](O)[CH](O)[CH]1O
FormulaC12 H15 N O8
Name2-nitrophenyl beta-D-galactopyranoside;
1-O-[O-NITROPHENYL]-BETA-D-GALACTOPYRANOSE;
2-nitrophenyl beta-D-galactoside;
2-nitrophenyl D-galactoside;
2-nitrophenyl galactoside
ChEMBLCHEMBL1229648
DrugBankDB01920
ZINCZINC000003860652
PDB chain2pe5 Chain A Residue 901 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
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PDB2pe5 Structural analysis of lac repressor bound to allosteric effectors
Resolution3.5 Å
Binding residue
(original residue number in PDB)
L73 A75 P76 F161 R197 W220 N246 D274 Q291 F293
Binding residue
(residue number reindexed from 1)
L72 A74 P75 F160 R196 W219 N245 D273 Q290 F292
Annotation score1
Enzymatic activity
Enzyme Commision number ?
Gene Ontology
Molecular Function
GO:0000976 transcription cis-regulatory region binding
GO:0000987 cis-regulatory region sequence-specific DNA binding
GO:0001217 DNA-binding transcription repressor activity
GO:0003677 DNA binding
GO:0003700 DNA-binding transcription factor activity
GO:0042802 identical protein binding
Biological Process
GO:0006355 regulation of DNA-templated transcription
GO:0045892 negative regulation of DNA-templated transcription
Cellular Component
GO:0005829 cytosol

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Cellular Component
External links
PDB RCSB:2pe5, PDBe:2pe5, PDBj:2pe5
PDBsum2pe5
PubMed17543986
UniProtP03023|LACI_ECOLI Lactose operon repressor (Gene Name=lacI)

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