Structure of PDB 8k9f Chain A Binding Site BS03

Receptor Information

>8k9f Chain A (length=218) Species: 324602 (Chloroflexus aurantiacus J-10-fl)

AQIFPRNANLLSRLSIFALVLLVVEGILILGVYFRSNYFRQVNVAIEQPV
AFSHQLHVNVVGIDCRYCHTSVDQSYFANIPATETCMTCHSQIKTYSPLL
EKVRESYATGKPIEWVKVYDLPNFVYFNHSIHVNKGIGCSTCHGQVNNMP
VVWQQQALYMGWCLNCHRNPELYVRPREEVYNMDYVPPSNQLEIGRQLVA
EYGIMPPDQLTNCYVCHR

Ligand information

• Ligand ID: HEC
• InChI: InChI=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-;
• InChIKey: HXQIYSLZKNYNMH-LJNAALQVSA-N
• SMILES:
  ACDLabs 10.04: O=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 1.5.0: CC=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 3.341: C\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 3.341: CC=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
• Formula: C34 H34 Fe N4 O4
• Name: HEME C
• PDB chain: 8k9f Chain A Residue 303

Receptor-Ligand Complex Structure

Structure summary

• PDB: 8k9f Cryo-EM structure of HQNO-bound Alternative Complex III from the anoxygenic phototrophic bacterium Chloroflexus aurantiacus.
• Resolution: 2.9 Å
• Binding residue (original residue number in PDB): C66 H70 V73 F78 A79 Y120 L122 F128 H130 G139 C140 C143 H144
• Binding residue (residue number reindexed from 1): C65 H69 V72 F77 A78 Y119 L121 F127 H129 G138 C139 C142 H143
• Annotation score: 4

Gene Ontology

Cellular Component

• GO:0016020 membrane

External links

• PDB: RCSB:8k9f, PDBe:8k9f, PDBj:8k9f
• PDBsum: 8k9f
• PubMed: 38299372
• UniProt: A9WEV2