Abstract.
The induction of cytochrome P450BM-3 in Bacillus megaterium was investigated in culture medium containing long-chain fatty acids and sodium dodecyl sulfate (SDS). Western blot analysis showed that the addition of 1 mM sodium palmitate to the culture medium resulted in 10-fold more induction of P450BM-3 than that of 1 mM palmitic acid. There was a time lag of several hours before induction of P450BM-3 by sodium palmitate occurred. After the P450BM-3 level reached a maximum value, it remained relatively constant for the rest of the stationary phase tested. SDS at 100 μM caused a comparable effect on induction of P450BM-3 compared with 1 mM sodium palmitate. In contrast, induction by SDS occurred relatively fast. After reaching a maximum value, the P450BM-3 level dropped relatively fast to a very low value. Significant induction of chloramphenicol acetyltransferase (CAT) activity by sodium palmitate and SDS in B. megaterium transformed with a bm3R1-cat transcriptional fusion vector suggests that induction of P450BM-3 by long-chain fatty acids and SDS occurs at the transcriptional level.
Similar content being viewed by others
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Shaw, GC., Sung, CH. & Chiang, A. Induction by Long-Chain Fatty Acids and Sodium Dodecyl Sulfate of Cytochrome P450BM-3 in Bacillus megaterium . Curr Microbiol 32, 124–128 (1996). https://doi.org/10.1007/s002849900022
Issue Date:
DOI: https://doi.org/10.1007/s002849900022