Functions Encoded by Pyrrolnitrin Biosynthetic Genes from
<i>Pseudomonas fluorescens</i>
作者:Sabine Kirner、Philip E. Hammer、D. Steven Hill、Annett Altmann、Ilona Fischer、Laura J. Weislo、Mike Lanahan、Karl-Heinz van Pée、James M. Ligon
DOI:10.1128/jb.180.7.1939-1943.1998
日期:1998.4
ABSTRACT
Pyrrolnitrin is a secondary metabolite derived from tryptophan and has strong antifungal activity. Recently we described four genes,
prnABCD
, from
Pseudomonas fluorescens
that encode the biosynthesis of pyrrolnitrin. In the work presented here, we describe the function of each
prn
gene product. The four genes encode proteins identical in size and serology to proteins present in wild-type
Pseudomonas fluorescens
, but absent from a mutant from which the entire
prn
gene region had been deleted. The
prnA
gene product catalyzes the chlorination of
l
-tryptophan to form 7-chloro-
l
-tryptophan. The
prnB
gene product catalyzes a ring rearrangement and decarboxylation to convert 7-chloro-
l
-tryptophan to monodechloroaminopyrrolnitrin. The
prnC
gene product chlorinates monodechloroaminopyrrolnitrin at the 3 position to form aminopyrrolnitrin. The
prnD
gene product catalyzes the oxidation of the amino group of aminopyrrolnitrin to a nitro group to form pyrrolnitrin. The organization of the
prn
genes in the operon is identical to the order of the reactions in the biosynthetic pathway.
The Second Enzyme in Pyrrolnitrin Biosynthetic Pathway Is Related to the Heme-Dependent Dioxygenase Superfamily
作者:Walter De Laurentis、Leang Khim、J. L. Ross Anderson、Ariane Adam、Robert S. Phillips、Stephen K. Chapman、Karl-Heinz van Pee、James H. Naismith
DOI:10.1021/bi7012189
日期:2007.10.1
Pyrrolnitrin is a commonly used and clinically effective treatment for fungal infections and provides the structural basis for the more widely used fludioxinil. The pyrrolnitrinbiosyntheticpathway consists of four chemical steps, the second of which is the rearrangement of 7-chloro-tryptophan by the enzyme PrnB, a reaction that is so far unprecedented in biochemistry. When expressed in Pseudomonas
Synthesis of Pyrrolnitrin and Related Halogenated Phenylpyrroles
作者:Matthew D. Morrison、Jason J. Hanthorn、Derek A. Pratt
DOI:10.1021/ol8026957
日期:2009.3.5
A general approach to halogenated arylpyrroles, Including the antifungal natural product pyrrolnitrin, is described using newly synthesized halogenated pyrroles and 2,6-disubstituted nitrobenzenes or 2,6-disubstituted anilines.