show all | hide all No of entries

Information on EC 1.14.15.29 - cholest-4-en-3-one 26-monooxygenase [(25S)-3-oxocholest-4-en-26-oate forming]

for references in articles please use BRENDA:EC1.14.15.29
Please wait a moment until all data is loaded. This message will disappear when all data is loaded.
EC Tree
IUBMB Comments
A cytochrome P-450 (heme-thiolate) protein found in several bacterial pathogens. The enzyme is involved in degradation of the host's cholesterol. It catalyses the hydroxylation of the C-26 carbon, followed by oxidation of the alcohol to the carboxylic acid via the aldehyde intermediate, initiating the degradation of the alkyl side-chain of cholesterol . The products are exclusively in the (25S) configuration. The enzyme is part of a two-component system that also includes a ferredoxin reductase (most likely KshB, which also interacts with EC 1.14.15.30, 3-ketosteroid 9alpha-monooxygenase). The enzyme also accepts cholesterol as a substrate. cf. EC 1.14.15.28, cholest-4-en-3-one 27-monooxygenase.
Specify your search results
Select one or more organisms in this record:
Word Map
The enzyme appears in viruses and cellular organisms
Reaction Schemes
hide(Overall reactions are displayed. Show all >>)
Synonyms
cholest-4-en-3-one 26-monooxygenase, CYP125, CYP125A1, CYP125A3, CYP125A4, cytochrome P450 125, Rv3545c, steroid C26-monooxygenase, more
REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
(25S)-26-hydroxycholest-4-en-3-one + 2 reduced ferredoxin [iron-sulfur] cluster + 2 H+ + O2 = (25S)-26-oxocholest-4-en-3-one + 2 oxidized ferredoxin [iron-sulfur] cluster + 2 H2O
show the reaction diagram
(1b)
-
-
-
cholest-4-en-3-one + 2 reduced ferredoxin [iron-sulfur] cluster + 2 H+ + O2 = (25S)-26-hydroxycholest-4-en-3-one + 2 oxidized ferredoxin [iron-sulfur] cluster + H2O
show the reaction diagram
(1a)
-
-
-
cholest-4-en-3-one + 3 NADH + 3 H+ + 3 O2 = (25S)-3-oxocholest-4-en-26-oate + 3 NAD+ + 4 H2O
show the reaction diagram
overall reaction
-
-
-
cholest-4-en-3-one + 6 reduced ferredoxin [iron-sulfur] cluster + 6 H+ + 3 O2 = (25S)-3-oxocholest-4-en-26-oate + 6 oxidized ferredoxin [iron-sulfur] cluster + 4 H2O
show the reaction diagram
(1c)
-
-
-
Select items on the left to see more content.