Structure of PDB 1gq1 Chain B Binding Site BS02

Receptor Information
>1gq1 Chain B (length=559) Species: 82367 (Paracoccus pantotrophus) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
DPAAALEDHKTRTDNRSEPSLDNLAQQDVAAPGAPEGVSALSDAQYNEAN
KIYFERCAGCHGVLRKGATGKALTPDLTRDLGFDYLQSFITYGSPAGMPN
WGTSGELSAEQVDLMANYLLLDPAAPPEFGMKEMRESWKVHVAPEDRPTQ
QENDWDLENLFSVTLRDAGQIALIDGATYEIKSVLDTGYAVHISRLSASG
RYLFVIGRDGKVNMIDLWMKEPTTVAEIKIGSEARSIETSKMEGWEDKYA
IAGAYWPPQYVIMDGETLEPKKIQSTRGMTYDEQEYHPEPRVAAILASHY
RPEFIVNVKETGKILLVDYTDLDNLKTTEISAERFLHDGGLDGSHRYFIT
AANARNKLVVIDTKEGKLVAIEDTGGQTPHPGRGANFVHPTFGPVWATSH
MGDDSVALIGTDPEGHPDNAWKILDSFPALGGGSLFIKTHPNSQYLYVDA
TLNPEAEISGSVAVFDIKAMTGDGSDPEFKTLPIAEWAGITEGQPRVVQG
EFNKDGTEVWFSVWNGKDQESALVVVDDKTLELKHVIKDERLVTPTGKFN
VYNTMTDTY
Ligand information
Ligand IDDHE
InChIInChI=1S/C34H34N4O10.Fe/c1-15-17(5-7-27(39)40)21-10-22-18(6-8-28(41)42)16(2)20(36-22)11-25-33(3,13-29(43)44)32(48)24(38-25)12-26-34(4,14-30(45)46)31(47)23(37-26)9-19(15)35-21;/h9-12H,5-8,13-14H2,1-4H3,(H6,35,36,37,38,39,40,41,42,43,44,45,46,47,48);/q;+2/p-2/t33-,34-;/m1./s1
InChIKeyXLQCGNUTSJTZNF-YDXXJHAFSA-L
SMILES
SoftwareSMILES
OpenEye OEToolkits 2.0.7Cc1c2n3c(c1CCC(=O)O)C=C4C(=C(C5=CC6=[N]7[Fe]3(N45)[N]8=C(C=C7C(C6=O)(C)CC(=O)O)C(=O)C(C8=C2)(C)CC(=O)O)C)CCC(=O)O
OpenEye OEToolkits 2.0.7Cc1c2n3c(c1CCC(=O)O)C=C4C(=C(C5=CC6=[N]7[Fe]3(N45)[N]8=C(C=C7[C@@](C6=O)(C)CC(=O)O)C(=O)[C@](C8=C2)(C)CC(=O)O)C)CCC(=O)O
CACTVS 3.385CC1=C(CCC(O)=O)C2=Cc3n4[Fe][N@]2C1=CC5=NC(=CC6=NC(=Cc4c(C)c3CCC(O)=O)[C@@](C)(CC(O)=O)C6=O)[C@@](C)(CC(O)=O)C5=O
CACTVS 3.385CC1=C(CCC(O)=O)C2=Cc3n4[Fe][N]2C1=CC5=NC(=CC6=NC(=Cc4c(C)c3CCC(O)=O)[C](C)(CC(O)=O)C6=O)[C](C)(CC(O)=O)C5=O
FormulaC34 H32 Fe N4 O10
NameHEME D
ChEMBL
DrugBank
ZINC
PDB chain1gq1 Chain B Residue 602 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
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PDB1gq1 Structure and Kinetic Properties of Paracoccus Pantotrophus Cytochrome Cd1 Nitrite Reductase with the D1 Heme Active Site Ligand Tyrosine 25 Replaced by Serine
Resolution1.4 Å
Binding residue
(original residue number in PDB)		S25 P27 S28 M106 W109 R174 H200 I201 R216 R243 S244 Y263 A301 A302 H345 R391 F444 T554 F557
Binding residue
(residue number reindexed from 1)		S17 P19 S20 M98 W101 R166 H192 I193 R208 R235 S236 Y255 A293 A294 H337 R383 F436 T546 F549
Annotation score1
Enzymatic activity
Catalytic site (original residue number in PDB) C65 C68 H69 M106 H345 H388
Catalytic site (residue number reindexed from 1) C57 C60 H61 M98 H337 H380
Enzyme Commision number 1.7.2.1: nitrite reductase (NO-forming).
1.7.99.1: hydroxylamine reductase.
Gene Ontology
Molecular Function
GO:0009055 electron transfer activity
GO:0016491 oxidoreductase activity
GO:0020037 heme binding
GO:0046872 metal ion binding
GO:0050418 hydroxylamine reductase activity
GO:0050421 nitrite reductase (NO-forming) activity
Cellular Component
GO:0042597 periplasmic space

View graph for
Molecular Function
View graph for
Cellular Component
External links
PDB RCSB:1gq1, PDBe:1gq1, PDBj:1gq1
PDBsum1gq1
PubMed12556530
UniProtP72181|NIRS_PARPN Nitrite reductase (Gene Name=nirS)

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