Previous Article | Next Article ![]()
J. Bacteriol., Nov 1995, 6106-6110, Vol 177, No. 21
PJ Kersten, C Witek, A vanden Wymelenberg and D Cullen
A cDNA clone (glx-2c) encoding glyoxal oxidase (GLOX) was isolated from a
Phanerochaete chrysosporium lambda gt11 library, and its nucleotide
sequence was shown to be distinct from that of the previously described
clone glx-1c (P. J. Kersten and D. Cullen, Proc. Natl. Acad. Sci. USA
90:7411-7413, 1993). Genomic clones corresponding to both cDNAs were also
isolated and sequenced. overall nucleotide sequence identity was 98%, and
the predicted proteins differed by a single residue: Lys-
308<==>Thr-308. Analyses of parental dikaryotic strain BKM-F-1767 and
homokaryotic progeny firmly established allelism for these structural
variants. Southern blots of pulsed-field gels localized the GLOX gene (glx)
to a dimorphic chromosome separate from the peroxidase and
cellobiohydrolase genes of P. chrysosporium. Controlled expression of
active GLOX was obtained from Aspergillus nidulans transformants when
glx-1c was fused to the promoter and secretion signal of the A. niger
glucoamylase gene. The GLOX isozyme corresponding to glx-2c was also
efficiently secreted by A. nidulans following site-specific mutagenesis of
the expression vector at codon 308 of glx-1c.
Copyright © 1995, American Society for Microbiology
Phanerochaete chrysosporium glyoxal oxidase is encoded by two allelic variants: structure, genomic organization, and heterologous expression of glx1 and glx2
Forest Products Laboratory, U.S. Department of Agriculture Forest Service, Madison, Wisconsin, USA.
This article has been cited by other articles:
Copyright © 2009 by the American Society for Microbiology. For an alternate route to Journals.ASM.org, visit: http://intl-journals.asm.org | More Info»