Structure of PDB 3ir7 Chain A Binding Site BS02

Receptor Information
>3ir7 Chain A (length=1242) Species: 83333 (Escherichia coli K-12) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
SKFLDRFFKQKGETFADGHGQLLNTNRDWEDGYRQRWQHDKIVRSTHGVN
CTGSCSWKIYVKNGLVTWETQQTDYPRTRPDLPNHEPRGCPSGASYSWYL
YSANRLKYPMMRKRLMKMWREAKALHSDPVEAWASIIEDADKAKSFKQAR
GRGGFVRSSWQEVNELIAASNVYTIKNYGPDRVAGFSPIPAMSMVSYASG
ARYLSLIGGTCLSFYDWYCDLPPASPQTWGEQTDVPESADWYNSSYIIAW
GSNVPQTRTPDAHFFTEVRYKGTKTVAVTPDYAEIAKLCDLWLAPKQGTD
AAMALAMGHVMLREFHLDNPSQYFTDYVRRYTDMPMLVMLEERDGYYAAG
RMLRAADLVDALGQENNPEWKTVAFNTNGEMVAPNGSIGFRWGEKGKWNL
EQRDGKTGEETELQLSLLGSQDEIAEVGFPYFGGDGTEHFNKVELENVLL
HKLPVKRLQLADGSTALVTTVYDLTLANYGLERGLNDVNCATSYDDVKAY
TPAWAEQITGVSRSQIIRIAREFADNADKTHGRSMIIVGAGLNHWYHLDM
NYRGLINMLIFCGCVGQSGGGWAHYVGQEKLRPQTGWQPLAFALDWQRPA
RHMNSTSYFYNHSSQWRYETVTAEELLSPMADKSRYTGHLIDFNVRAERM
GWLPSAPQLGTNPLTIAGEAEKAGMNPVDYTVKSLKEGSIRFAAEQPENG
KNHPRNLFIWRSNLLGSSGKGHEFMLKYLLGTEHGIQGKDLGQQGGVKPE
EVDWQDNGLEGKLDLVVTLDFRLSSTCLYSDIILPTATWYEKDDMNTSDM
HPFIHPLSAAVDPAWEAKSDWEIYKAIAKKFSEVCVGHLGKETDIVTLPI
QHDSAAELAQPLDVKDWKKGECDLIPGKTAPHIMVVERDYPATYERFTSI
GPLMEKIGNGGKGIAWNTQSEMDLLRKLNYTKAEGPAKGQPMLNTAIDAA
EMILTLAPETNGQVAVKAWAALSEFTGRDHTHLALNKEDEKIRFRDIQAQ
PRKIISSPTWSGLEDEHVSYNAGYTNVHELIPWRTLSGRQQLYQDHQWMR
DFGESLLVYRPPIDTRSVKEVIGQKSNGNQEKALNFLTPHQKWGIHSTYS
DNLLMLTLGRGGPVVWLSEADAKDLGIADNDWIEVFNSNGALTARAVVSQ
RVPAGMTMMYHAQERIVNLPGSEITQQRGGIHNSVTRITPKPTHMIGGYA
HLAYGFNYYGTVGSNRDEFVVVRKMKNIDWLDGEGNDQVQES
Ligand information
Ligand IDMD1
InChIInChI=1S/C20H26N10O13P2S2/c21-19-26-14-8(16(34)28-19)25-5(1-23-14)12(46)13(47)6(31)2-40-44(36,37)43-45(38,39)41-3-7-10(32)11(33)18(42-7)30-4-24-9-15(30)27-20(22)29-17(9)35/h1,4-7,10-11,18,25,31-33,46-47H,2-3H2,(H,36,37)(H,38,39)(H3,21,26,28,34)(H3,22,27,29,35)/b13-12-/t5-,6-,7-,10-,11-,18-/m1/s1
InChIKeyIRGDLSAXQOKWLX-XHEYTWMPSA-N
SMILES
SoftwareSMILES
OpenEye OEToolkits 1.7.5c1nc2c(n1[C@H]3[C@@H]([C@@H]([C@H](O3)CO[P@](=O)(O)O[P@](=O)(O)OC[C@H](/C(=C(\[C@H]4C=NC5=C(N4)C(=O)NC(=N5)N)/S)/S)O)O)O)N=C(NC2=O)N
ACDLabs 10.04O=C2NC(=NC=1N=CC(NC=12)C(/S)=C(/S)C(O)COP(=O)(O)OP(=O)(O)OCC5OC(n4cnc3c4N=C(N)NC3=O)C(O)C5O)N
CACTVS 3.385NC1=NC2=C(N[CH](C=N2)C(S)=C(S)[CH](O)CO[P](O)(=O)O[P](O)(=O)OC[CH]3O[CH]([CH](O)[CH]3O)n4cnc5C(=O)NC(=Nc45)N)C(=O)N1
CACTVS 3.385NC1=NC2=C(N[C@H](C=N2)C(\S)=C(S)/[C@H](O)CO[P](O)(=O)O[P](O)(=O)OC[C@H]3O[C@H]([C@H](O)[C@@H]3O)n4cnc5C(=O)NC(=Nc45)N)C(=O)N1
OpenEye OEToolkits 1.7.5c1nc2c(n1C3C(C(C(O3)COP(=O)(O)OP(=O)(O)OCC(C(=C(C4C=NC5=C(N4)C(=O)NC(=N5)N)S)S)O)O)O)N=C(NC2=O)N
FormulaC20 H26 N10 O13 P2 S2
NamePHOSPHORIC ACID 4-(2-AMINO-4-OXO-3,4,5,6,-TETRAHYDRO-PTERIDIN-6-YL)-2-HYDROXY-3,4-DIMERCAPTO-BUT-3-EN-YL ESTER GUANYLATE ESTER
ChEMBL
DrugBank
ZINCZINC000195826882
PDB chain3ir7 Chain A Residue 1251 [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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PDB3ir7 Protein crystallography reveals a role for the FS0 cluster of Escherichia coli nitrate reductase A (NarGHI) in enzyme maturation.
Resolution2.5 Å
Binding residue
(original residue number in PDB)		D222 G253 N255 Q258 T259 R260 V280 P282 D283 Q299 D302 G541 A542 G543 L544 W547 V578 G579 P1091 H1092 Q1093 G1096 I1097 H1098 R1218
Binding residue
(residue number reindexed from 1)		D220 G251 N253 Q256 T257 R258 V278 P280 D281 Q297 D300 G539 A540 G541 L542 W545 V576 G577 P1089 H1090 Q1091 G1094 I1095 H1096 R1216
Annotation score1
Enzymatic activity
Catalytic site (original residue number in PDB) S94 P190 W219 Y220 P224 Q580
Catalytic site (residue number reindexed from 1) S92 P188 W217 Y218 P222 Q578
Enzyme Commision number 1.7.5.1: nitrate reductase (quinone).
Gene Ontology
Molecular Function
GO:0005515 protein binding
GO:0008940 nitrate reductase activity
GO:0009055 electron transfer activity
GO:0016491 oxidoreductase activity
GO:0043546 molybdopterin cofactor binding
GO:0046872 metal ion binding
GO:0051539 4 iron, 4 sulfur cluster binding
GO:0160182 nitrate reductase (quinone) activity
Biological Process
GO:0009061 anaerobic respiration
GO:0019645 anaerobic electron transport chain
GO:0042126 nitrate metabolic process
GO:0042128 nitrate assimilation
GO:0045333 cellular respiration
Cellular Component
GO:0005886 plasma membrane
GO:0009325 nitrate reductase complex
GO:0016020 membrane
GO:0044799 NarGHI complex
GO:1990204 oxidoreductase complex

View graph for
Molecular Function
View graph for
Biological Process
View graph for
Cellular Component
External links
PDB RCSB:3ir7, PDBe:3ir7, PDBj:3ir7
PDBsum3ir7
PubMed20053990
UniProtP09152|NARG_ECOLI Respiratory nitrate reductase 1 alpha chain (Gene Name=narG)

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