Structure of PDB 4nkw Chain B

Receptor sequence
>4nkwB (length=464) Species: 9606 (Homo sapiens) [Search protein sequence]
LLSLPLVGSLPFLPRHGHMHNNFFKLQKKYGPIYSVRMGTKTTVIVGHHQ
LAKEVLIKKGKDFSGRPQMATLDILSNNRKGIAFADSGAHWQLHRRLAMA
TFALFKDGDQKLEKIICQEISTLCDMLATHNGQSIDISFPVFVAVTNVIS
LICFNTSYKNGDPELNVIQNYNEGIIDNLSKDSLVDLVPWLKIFPNKTLE
KLKSHVKIRNDLLNKILENYKEKFRSDSITNMLDTLMQAKMNSDSELLSD
NHILTTIGDIFGAGVETTTSVVKWTLAFLLHNPQVKKKLYEEIDQNVGFS
RTPTISDRNRLLLLEATIREVLRLRPVAPMLIPHKANVDSSIGEFAVDKG
TEVIINLWALHHNEKEWHQPDQFMPERFLNPAGTQLISPSVSYLPFGAGP
RSCIGEILARQELFLIMAWLLQRFDLEVPDDGQLPSLEGIPKVVFLIDSF
KVKIKVRQAWREAQ
3D structure
PDB4nkw Structures of Human Steroidogenic Cytochrome P450 17A1 with Substrates.
ChainB
Resolution2.5 Å
3D
structure
Catalytic site residues are labeled in the structure
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Enzymatic activity
Catalytic site (original residue number in PDB) T306 F435 C442
Catalytic site (residue number reindexed from 1) T267 F396 C403
Enzyme Commision number 1.14.14.19: steroid 17alpha-monooxygenase.
1.14.14.32: 17alpha-hydroxyprogesterone deacetylase.
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 R96 I112 A113 R125 I299 A302 T306 L370 I371 H373 P434 F435 R440 C442 I443 G444 R66 I82 A83 R95 I260 A263 T267 L331 I332 H334 P395 F396 R401 C403 I404 G405
BS02 PLO B D298 G301 D259 G262 MOAD: Kd<100nM
Gene Ontology
Molecular Function
GO:0004497 monooxygenase activity
GO:0004508 steroid 17-alpha-monooxygenase activity
GO:0005506 iron ion binding
GO:0008395 steroid hydroxylase activity
GO:0016705 oxidoreductase activity, acting on paired donors, with incorporation or reduction of molecular oxygen
GO:0016829 lyase activity
GO:0019825 oxygen binding
GO:0020037 heme binding
GO:0046872 metal ion binding
Biological Process
GO:0006694 steroid biosynthetic process
GO:0006702 androgen biosynthetic process
GO:0006704 glucocorticoid biosynthetic process
GO:0007548 sex differentiation
GO:0008202 steroid metabolic process
GO:0042445 hormone metabolic process
GO:0042446 hormone biosynthetic process
GO:0042448 progesterone metabolic process
Cellular Component
GO:0005783 endoplasmic reticulum
GO:0005789 endoplasmic reticulum membrane
GO:0016020 membrane
GO:0030424 axon
GO:0043025 neuronal cell body

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Molecular Function
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Biological Process
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Cellular Component
External links
PDB RCSB:4nkw, PDBe:4nkw, PDBj:4nkw
PDBsum4nkw
PubMed25301938
UniProtP05093|CP17A_HUMAN Steroid 17-alpha-hydroxylase/17,20 lyase (Gene Name=CYP17A1)

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