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Identification |
BMDB Protein ID
| BMDBP00053 |
Secondary Accession Numbers
| |
Name
| Cholesterol side-chain cleavage enzyme, mitochondrial |
Synonyms
|
Not Available
|
Gene Name
| CYP11A1 |
Protein Type
| Enzyme |
Biological Properties |
General Function
| Secondary metabolites biosynthesis, transport and catabolism |
Specific Function
| A cytochrome P450 monooxygenase that catalyzes the side-chain hydroxylation and cleavage of cholesterol to pregnenolone, the precursor of most steroid hormones (PubMed:11412116). Catalyzes three sequential oxidation reactions of cholesterol, namely the hydroxylation at C22 followed with the hydroxylation at C20 to yield 20R,22R-hydroxycholesterol that is further cleaved between C20 and C22 to yield the C21-steroid pregnenolone and 4-methylpentanal (PubMed:11412116). Mechanistically, uses molecular oxygen inserting one oxygen atom into a substrate and reducing the second into a water molecule. Two electrons are provided by NADPH via a two-protein mitochondrial transfer system comprising flavoprotein FDXR (adrenodoxin/ferredoxin reductase) and nonheme iron-sulfur protein FDX1 or FDX2 (adrenodoxin/ferredoxin) (PubMed:11412116). |
Pathways
|
- C21-steroid hormone metabolism
- Lipid metabolism
|
Reactions
|
3a,7a-Dihydroxy-5b-cholestane + 3 NADPH + 3 Oxygen → 3 alpha,7 alpha,26-Trihydroxy-5beta-cholestane +3 NADP +3 Water |
details
|
3 alpha,7 alpha,26-Trihydroxy-5beta-cholestane → 3a,7a-Dihydroxy-5b-cholestan-26-al |
details
|
3a,7a-Dihydroxy-5b-cholestan-26-al → 3a,7a-Dihydroxycoprostanic acid |
details
|
5-b-Cholestane-3a ,7a ,12a-triol + 3 NADPH + 3 Oxygen → 27-Deoxy-5b-cyprinol +3 NADP +4 Water |
details
|
27-Deoxy-5b-cyprinol + 3 NADPH + 3 Oxygen → 3a,7a,12a-Trihydroxy-5b-cholestan-26-al +3 NADP +4 Water |
details
|
3a,7a,12a-Trihydroxy-5b-cholestan-26-al → Coprocholic acid |
details
|
27-Hydroxycholesterol + 3 NADPH + 3 Oxygen → 3beta-Hydroxy-5-cholestenoic acid +3 NADP +4 Water |
details
|
|
GO Classification
|
Not Available
|
Cellular Location
|
Not Available
|
Gene Properties |
Chromosome Location
| 21 |
Locus
| Not Available |
SNPs
| CYP11A1 |
Gene Sequence
|
>1563 bp
.AGCAGCAGCTGTGGGGGCAGCATGCTAGCAAGGGGGCTTCCCCTCCGCTCAGCCCTGGT
CAAAGCCTGCCCACCCATCCTGAGCACAGTGGGGGAGGGCTGGGGCCACCACAGGGTGGG
CACTGGAGAGGGAGCTGGCATCTCCACAAAGACCCCTCGCCCCTACAGTGAGATCCCCTC
CCCTGGTGACAATGGCTGGCTTAACCTCTACCATTTCTGGAGGGAGAAGGGCTCACAGAG
AATCCACTTTCGCCACATCGAGAACTTCCAGAAGTATGGCCCCATTTACAGGGAGAAGCT
TGGCAATTTGGAGTCAGTTTATATCATTCACCCTGAAGACGTGGCCCATCTCTTCAAGTT
CGAGGGATCCTACCCAGAGAGATATGACATCCCGCCCTGGCTGGCCTATCACCGATATTA
TCAGAAACCCATTGGAGTCCTGTTTAAGAAGTCAGGAACCTGGAAGAAAGACCGGGTGGT
CCTGAACACGGAGGTGATGGCTCCAGAGGCAATAAAGAACTTCATCCCACTGCTGAATCC
AGTGTCTCAGGACTTCGTCAGCCTCCTGCACAAGCGCATCAAGCAGCAGGGCTCCGGAAA
GTTTGTAGGGGACATCAAGGAAGACCTGTTTCACTTTGCCTTTGAGTCCATCACCAATGT
CATGTTTGGGGAGCGCCTGGGGATGCTGGAGGAGACAGTGAACCCCGAGGCCCAGAAGTT
CATTGATGCCGTCTACAAGATGTTCCACACCAGTGTCCCTCTGCTCAACGTCCCTCCAGA
ACTGTACCGTCTATTCAGAACCAAGACTTGGAGGGACCATGTAGCCGCATGGGACACAAT
TTTCAATAAAGCTGAAAAATACACTGAGATCTTCTACCAGGACCTGAGACGGAAAACAGA
ATTTAGGAATTACCCAGGCATCCTCTACTGCCTCCTGAAAAGTGAGAAGATGCTCTTGGA
GGATGTCAAGGCCAATATTACGGAGATGCTGGCAGGGGGTGTGAACACGACATCCATGAC
ATTGCAATGGCACTTGTACGAGATGGCACGCAGCCTGAATGTGCAGGAGATGCTGCGGGA
GGAGGTTCTGAATGCCCGACGCCAGGCAGAGGGAGACATAAGCAAGATGCTGCAAATGGT
CCCACTTCTCAAAGCTAGCATCAAGGAGACGCTGAGACTCCACCCCATCTCCGTGACCCT
GCAGAGATACCCTGAAAGTGACTTGGTTCTTCAAGATTACCTGATTCCTGCCAAGACACT
GGTGCAAGTGGCCATCTATGCCATGGGCCGAGACCCTGCCTTCTTCTCCAGTCCGGACAA
GTTTGACCCAACCAGGTGGCTGAGTAAAGACAAAGACCTCATCCACTTCCGGAACCTGGG
CTTTGGCTGGGGAGTGCGGCAGTGCGTGGGCCGGCGGATCGCCGAGCTGGAGATGACCCT
CTTCCTCATCCACATTCTGGAGAACTTCAAGGTTGAAATGCAGCATATCGGTGACGTGGA
CACCATATTCAACCTCATCCTGACGCCGGACAAGCCCATCTTCCTTGTCTTCCGCCCCTT
CAA
|
Protein Properties |
Number of Residues
| 520 |
Molecular Weight
| 60333.0 |
Theoretical pI
| 9.15 |
Pfam Domain Function
|
Not Available |
Signals
|
|
Transmembrane Regions
|
Not Available
|
Protein Sequence
|
>Cholesterol side-chain cleavage enzyme, mitochondrial
MLARGLPLRSALVKACPPILSTVGEGWGHHRVGTGEGAGISTKTPRPYSEIPSPGDNGWL
NLYHFWREKGSQRIHFRHIENFQKYGPIYREKLGNLESVYIIHPEDVAHLFKFEGSYPER
YDIPPWLAYHRYYQKPIGVLFKKSGTWKKDRVVLNTEVMAPEAIKNFIPLLNPVSQDFVS
LLHKRIKQQGSGKFVGDIKEDLFHFAFESITNVMFGERLGMLEETVNPEAQKFIDAVYKM
FHTSVPLLNVPPELYRLFRTKTWRDHVAAWDTIFNKAEKYTEIFYQDLRRKTEFRNYPGI
LYCLLKSEKMLLEDVKANITEMLAGGVNTTSMTLQWHLYEMARSLNVQEMLREEVLNARR
QAEGDISKMLQMVPLLKASIKETLRLHPISVTLQRYPESDLVLQDYLIPAKTLVQVAIYA
MGRDPAFFSSPDKFDPTRWLSKDKDLIHFRNLGFGWGVRQCVGRRIAELEMTLFLIHILE
NFKVEMQHIGDVDTIFNLILTPDKPIFLVFRPFNQDPPQA
|
External Links |
GenBank ID Protein
| AAA30488.1 |
UniProtKB/Swiss-Prot ID
| P00189 |
UniProtKB/Swiss-Prot Entry Name
| CP11A_BOVIN |
PDB IDs
|
|
GenBank Gene ID
| K02130 |
GeneCard ID
| CYP11A1 |
GenAtlas ID
| Not Available |
HGNC ID
| Not Available |
References |
General References
| Not Available |