Oxidation of Rotenone by Polyporus anceps Laccase
The extracellular laccase produced by Polyporus anceps transforms rotenone to a single, more polar product. This transformation occurs in incubation mixtures containing chlorpromazine, laccase, and rotenone where rotenone serves as a pseudosubstrate for the enzyme. Chlorpromazine, the true substrate...
Saved in:
Published in | Journal of natural products (Washington, D.C.) Vol. 47; no. 4; pp. 692 - 697 |
---|---|
Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Washington, DC
American Chemical Society
01.07.1984
Glendale, AZ American Society of Pharmacognosy |
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | The extracellular laccase produced by Polyporus anceps transforms rotenone to a single, more polar product. This transformation occurs in incubation mixtures containing chlorpromazine, laccase, and rotenone where rotenone serves as a pseudosubstrate for the enzyme. Chlorpromazine, the true substrate, serves as a cycling redox component of the system forming a radical-cation species that abstracts an electron from rotenone in the oxidation process. Physicochemical properties of the product were determined on an analytically pure sample obtained by preparative hplc. High resolution ms, high-field pmr and cmr, uv, and optical rotation analyses indicated that rotenone had been transformed to 6a beta, 12a beta-rotenolone by P. anceps laccase. |
---|---|
Bibliography: | ark:/67375/TPS-ZDQ5RV02-Z istex:A641926F7369209A43706EF316EE8BFBC7DFEA5F ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0163-3864 1520-6025 |
DOI: | 10.1021/np50034a021 |