Cytochrome P450 alkane hydroxylases of the CYP153 family are common in alkane-degrading eubacteria lacking integral membrane alkane hydroxylases.
Several strains that grow on medium-chain-length alkanes and catalyze interesting hydroxylation and epoxidation reactions do not possess integral membrane nonheme iron alkane hydroxylases. Using PCR, we show that most of these strains possess enzymes related to CYP153A1 and CYP153A6, cytochrome P450 enzymes that were characterized as alkane hydroxylases. A vector for the polycistronic coexpression of individual CYP153 genes with a ferredoxin gene and a ferredoxin reductase gene was constructed. Seven of the 11 CYP153 genes tested allowed Pseudomonas putida GPo12 recombinants to grow well on alkanes, providing evidence that the newly cloned P450s are indeed alkane hydroxylases.
van Beilen
Jan B
JB
Institute of Biotechnology, ETH Hönggerberg, CH-8093 Zürich, Switzerland. vanbeilen@biotech.biol.ethz.ch
Funhoff
Enrico G
EG
van Loon
Alexander
A
Just
Andrea
A
Kaysser
Leo
L
Bouza
Manuel
M
Holtackers
René
R
Röthlisberger
Martina
M
Li
Zhi
Z
Witholt
Bernard
B
D000473:Alkanes / Q000378:metabolism*; D001482:Base Composition; D001673:Biodegradation, Environmental; D002462:Cell Membrane / Q000201:enzymology*; D042926:Cytochrome P-450 CYP4A; D003577:Cytochrome P-450 Enzyme System / Q000235:genetics / Q000378:metabolism*; D006094:Gram-Positive Bacteria / Q000201:enzymology* / Q000235:genetics / Q000378:metabolism; D006899:Mixed Function Oxygenases / Q000235:genetics / Q000378:metabolism*; D008969:Molecular Sequence Data; D020560:Proteobacteria / Q000201:enzymology* / Q000235:genetics / Q000378:metabolism; D016958:Pseudomonas putida / Q000201:enzymology / Q000235:genetics; D011994:Recombinant Proteins / Q000235:genetics / Q000378:metabolism; D017422:Sequence Analysis, DNA
D000473:Alkanes; D011994:Recombinant Proteins; D003577:Cytochrome P-450 Enzyme System; D006899:Mixed Function Oxygenases; C435228:cytochrome P-450 CYP153 (Acinetobacter); D042926:Cytochrome P-450 CYP4A