Structure of PDB 1gu6 Chain C Binding Site BS02

Receptor Information
>1gu6 Chain C (length=441) Species: 562 (Escherichia coli) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
VEAKNETFAPQHPDQYLSWKATSEQSERVDALAEDPRLVILWAGYPFSRD
YNKPRGHAFAVTDVRETLRTGAPKNAEDGPLPMACWSCKSPDVARLIQKD
GEDGYFHGKWARGGPEIVNNLGCADCHNTASPEFAKGKPELTLSRPYAAR
AMEAIGKPFEKAGRFDQQSMVCGQCHVEYYFDGKNKAVKFPWDDGMKVEN
MEQYYDKIAFSDWTNSLSKTPMLKAQHPEYETWTAGIHGKNNVTCIDCHM
PKVQNAEGKLYTDHKIGNPFDNFAQTCANCHTQDKAALQKVVAERKQSIN
DLKIKVEDQLVHAHFEAKAALDAGATEAEMKPIQDDIRHAQWRWDLAIAS
HGIHMHAPEEGLRMLGTAMDKAADARTKLARLLATKGITHEIQIPDISTK
EKAQQAIGLNMEQIKAEKQDFIKTVIPQWEEQARKNGLLSQ
Ligand information
Ligand IDHEC
InChIInChI=1S/C34H34N4O4.Fe/c1-7-21-17(3)25-13-26-19(5)23(9-11-33(39)40)31(37-26)16-32-24(10-12-34(41)42)20(6)28(38-32)15-30-22(8-2)18(4)27(36-30)14-29(21)35-25;/h7-8,13-16H,9-12H2,1-6H3,(H,39,40)(H,41,42);/q-4;+4/b21-7?,22-8?,26-13-,29-14-,30-15-,31-16-;
InChIKeyHXQIYSLZKNYNMH-LJNAALQVSA-N
SMILES
SoftwareSMILES
ACDLabs 10.04O=C(O)CCC1=C(C2=CC6=C(C(=C/C)\C5=CC4=C(C(\C3=Cc7c(c(c8C=C1N2[Fe](N34)(N56)n78)CCC(=O)O)C)=C/C)C)C)C
OpenEye OEToolkits 1.5.0CC=C1C(=C2C=C3C(=CC)C(=C4N3[Fe]56N2C1=Cc7n5c(c(c7C)CCC(=O)O)C=C8N6C(=C4)C(=C8CCC(=O)O)C)C)C
CACTVS 3.341C\C=C1/C(=C2C=C3N4C(=Cc5n6c(C=C7N8C(=C(C)\C7=C/C)C=C1N2[Fe@@]468)c(C)c5CCC(O)=O)C(=C3C)CCC(O)=O)C
CACTVS 3.341CC=C1C(=C2C=C3N4C(=Cc5n6c(C=C7N8C(=C(C)C7=CC)C=C1N2[Fe]468)c(C)c5CCC(O)=O)C(=C3C)CCC(O)=O)C
FormulaC34 H34 Fe N4 O4
NameHEME C
ChEMBL
DrugBank
ZINC
PDB chain1gu6 Chain C Residue 1482 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
Global viewLocal viewStructure summary

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PDB1gu6 Structure and Spectroscopy of the Periplasmic Cytochrome C Nitrite Reductase from Escherichia Coli
Resolution2.5 Å
Binding residue
(original residue number in PDB)		N89 P91 T104 R106 C122 C125 K126 C212 H213 Y216 H264
Binding residue
(residue number reindexed from 1)		N52 P54 T67 R69 C85 C88 K89 C175 H176 Y179 H227
Annotation score1
Enzymatic activity
Enzyme Commision number 1.7.2.2: nitrite reductase (cytochrome; ammonia-forming).
Gene Ontology
Molecular Function
GO:0005506 iron ion binding
GO:0005509 calcium ion binding
GO:0016491 oxidoreductase activity
GO:0016966 nitric oxide reductase activity
GO:0020037 heme binding
GO:0042279 nitrite reductase (cytochrome, ammonia-forming) activity
GO:0046872 metal ion binding
Biological Process
GO:0009061 anaerobic respiration
GO:0019645 anaerobic electron transport chain
GO:0042128 nitrate assimilation
Cellular Component
GO:0030288 outer membrane-bounded periplasmic space
GO:0042597 periplasmic space

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Molecular Function
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Biological Process
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Cellular Component
External links
PDB RCSB:1gu6, PDBe:1gu6, PDBj:1gu6
PDBsum1gu6
PubMed11863430
UniProtP0ABK9|NRFA_ECOLI Cytochrome c-552 (Gene Name=nrfA)

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