Structure of PDB 1s6a Chain A Binding Site BS02

Receptor Information
>1s6a Chain A (length=123) Species: 1148 (Synechocystis sp. PCC 6803) [Search protein sequence] [Download receptor structure] [Download structure with residue number starting from 1] [View receptor structure]
STLYEKLGGTTAVDLAVDKFYERVLQDDRIKHFFADVDMAKQRAHQKAFL
TYAFGGTDKYDGRYMREAHKELVENHGLNGEHFDAVAEDLLATLKEMGVP
EDLIAEVAAVAGAPAHKRDVLNQ
Ligand information
Ligand IDHEM
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,1-2,9-12H2,3-6H3,(H4,35,36,37,38,39,40,41,42);/q;+2/p-2/b25-13-,26-13-,27-14-,28-15-,29-14-,30-15-,31-16-,32-16-;
InChIKeyKABFMIBPWCXCRK-RGGAHWMASA-L
SMILES
SoftwareSMILES
OpenEye OEToolkits 1.7.6Cc1c2n3c(c1CCC(=O)O)C=C4C(=C(C5=[N]4[Fe]36[N]7=C(C=C8N6C(=C5)C(=C8C)C=C)C(=C(C7=C2)C)C=C)C)CCC(=O)O
CACTVS 3.385CC1=C(CCC(O)=O)C2=Cc3n4[Fe]5|6|N2=C1C=c7n5c(=CC8=N|6C(=Cc4c(C)c3CCC(O)=O)C(=C8C=C)C)c(C)c7C=C
ACDLabs 12.01C=1c3c(c(c4C=C5C(=C(C=6C=C7C(=C(C8=CC=2C(=C(C=1N=2[Fe](n34)(N5=6)N78)CCC(=O)O)C)\C=C)C)\C=C)C)C)CCC(=O)O
FormulaC34 H32 Fe N4 O4
NamePROTOPORPHYRIN IX CONTAINING FE;
HEME
ChEMBL
DrugBankDB18267
ZINC
PDB chain1s6a Chain A Residue 125 [Download ligand structure] [Download structure with residue number starting from 1] [View ligand structure]
Receptor-Ligand Complex Structure
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PDB1s6a Crystallographic analysis of synechocystis cyanoglobin reveals the structural changes accompanying ligand binding in a hexacoordinate hemoglobin.
Resolution1.69 Å
Binding residue
(original residue number in PDB)		I31 F34 F35 Q43 Q47 F50 Y61 G63 R64 M66 H70 L73 L79 F84 V87 H117 V121
Binding residue
(residue number reindexed from 1)		I30 F33 F34 Q42 Q46 F49 Y60 G62 R63 M65 H69 L72 L78 F83 V86 H116 V120
Annotation score1
Enzymatic activity
Enzyme Commision number ?
Gene Ontology
Molecular Function
GO:0005344 oxygen carrier activity
GO:0008379 thioredoxin peroxidase activity
GO:0019825 oxygen binding
GO:0020037 heme binding
GO:0046872 metal ion binding
Biological Process
GO:0015671 oxygen transport
GO:0034599 cellular response to oxidative stress
GO:0045454 cell redox homeostasis
GO:0098869 cellular oxidant detoxification
Cellular Component
GO:0005737 cytoplasm

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Molecular Function
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Biological Process
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Cellular Component
External links
PDB RCSB:1s6a, PDBe:1s6a, PDBj:1s6a
PDBsum1s6a
PubMed15289104
UniProtP73925|TRHBN_SYNY3 Group 1 truncated hemoglobin GlbN (Gene Name=glbN)

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