Structure of PDB 3kx5 Chain B

Receptor sequence
>3kx5B (length=455) Species: 1404 (Priestia megaterium) [Search protein sequence]
KEMPQPKTFGELKNLPLLNTDKPVQALMKIADELGEIFKFEAPGRVTRYL
SSQRLIKEACDESRFDKNLSQALKFVRDFAGDGLFTSWTHEKNWKKAHNI
LLPSFSQQAMKGYHAMMVDIAVQLVQKWERLNADEHIEVPEDMTRLTLDT
IGLCGFNYRFNSFYRDQPHPFITSMVRALDEAMNKLQRANPDDPAYDENK
RQFQEDIKVMNDLVDKIIADRKASGEQSDDLLTHMLNGKDPETGEPLDDE
NIRYQIITELIAGHETTSGLLSFALYFLVKNPHVLQKAAEEAARVLVDPV
PSYKQVKQLKYVGMVLNEALRLWPTAPAFSLYAKEDTVLGGEYPLEKGDE
LMVLIPQLHRDKTIWGDDVEEFRPERFENPSAIPQHAFKPFGNGQRACIG
QQFALHEATLVLGMMLKHFDFEDHTNYELDIKETLTLKPEGFVVKAKSKK
IPLGG
3D structure
PDB3kx5 Glutamate-haem ester bond formation is disfavoured in flavocytochrome P450 BM3: characterization of glutamate substitution mutants at the haem site of P450 BM3.
ChainB
Resolution1.686 Å
3D
structure
Catalytic site residues are labeled in the structure
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Enzymatic activity
Catalytic site (original residue number in PDB) T268 F393 C400
Catalytic site (residue number reindexed from 1) T266 F391 C398
Enzyme Commision number 1.14.14.1: unspecific monooxygenase.
1.6.2.4: NADPH--hemoprotein 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 HEM B K69 L86 F87 W96 E261 A264 G265 T268 T269 F331 P392 F393 R398 C400 I401 G402 A406 K67 L84 F85 W94 E259 A262 G263 T266 T267 F329 P390 F391 R396 C398 I399 G400 A404
Gene Ontology
Molecular Function
GO:0004497 monooxygenase activity
GO:0005506 iron ion binding
GO:0016705 oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen
GO:0020037 heme binding

View graph for
Molecular Function
External links
PDB RCSB:3kx5, PDBe:3kx5, PDBj:3kx5
PDBsum3kx5
PubMed20180779
UniProtP14779|CPXB_PRIM2 Bifunctional cytochrome P450/NADPH--P450 reductase (Gene Name=cyp102A1)

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