Structure of PDB 3kpk Chain A

Receptor sequence
>3kpkA (length=418) Species: 243159 (Acidithiobacillus ferrooxidans ATCC 23270) [Search protein sequence]
MAHVVILGAGTGGMPAAYEMKEALGSGHEVTLISANDYFQFVPSNPWVGV
GWKERDDIAFPIRHYVERKGIHFIAQSAEQIDAEAQNITLADGNTVHYDY
LMIATGPKLAFENVPGSDPHEGPVQSICTVDHAERAFAEYQALLREPGPI
VIGAMAGASAFGPAYEYAMIVASDLKKRGMRDKIPSFTFITSEPYIGHLG
IQGVGDSKGILTKGLKEEGIEAYTNCKVTKVEDNKMYVTQVDEKGETIKE
MVLPVKFGMMIPAFKGVPAVAGVEGLCNPGGFVLVDEHQRSKKYANIFAA
GIAIAIPPVETTPVPTGAPKTGYMIESMVSAAVHNIKADLEGRKGEQTMG
TWNAVCFADMGDRGAAFIALPQLKPRKVDVFAYGRWVHLAKVAFEKYFIR
KMKMGVSEPFYEKVLFKM
3D structure
PDB3kpk Crystal structure of sulfide:quinone oxidoreductase from Acidithiobacillus ferrooxidans: insights into sulfidotrophic respiration and detoxification.
ChainA
Resolution2.05 Å
3D
structure
Catalytic site residues are labeled in the structure
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Enzymatic activity
Catalytic site (original residue number in PDB) C128 A160 H198 C356 D359 K391
Catalytic site (residue number reindexed from 1) C128 A160 H198 C356 D359 K391
Enzyme Commision number 1.8.5.4: bacterial sulfide:quinone reductase.
Interaction with ligand
Site
#		 Ligand Ligand
chain		 Binding residues on receptor
(original residue number in PDB)		 Binding residues on receptor
(residue number reindexed from 1)		 Binding affinity
BS01 FAD A L7 G8 A9 G10 T11 G12 S34 A35 V42 P43 S77 A78 A104 T105 G106 I127 P163 G301 I302 K320 T321 G322 L7 G8 A9 G10 T11 G12 S34 A35 V42 P43 S77 A78 A104 T105 G106 I127 P163 G301 I302 K320 T321 G322
Gene Ontology
Molecular Function
GO:0000166 nucleotide binding
GO:0016491 oxidoreductase activity
GO:0048038 quinone binding
GO:0070224 sulfide:quinone oxidoreductase activity
Cellular Component
GO:0016020 membrane

View graph for
Molecular Function
View graph for
Cellular Component
External links
PDB RCSB:3kpk, PDBe:3kpk, PDBj:3kpk
PDBsum3kpk
PubMed20303979
UniProtB7JBP8|SQRD_ACIF2 Sulfide-quinone reductase (Gene Name=AFE_1792)

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