Two Origins for the Gene Encoding α-Isopropylmalate Synthase in Fungi
- University of Missouri, Kansas City, MO (United States); DOE/OSTI
- University of Missouri, Kansas City, MO (United States)
The biosynthesis of leucine is a biochemical pathway common to prokaryotes, plants and fungi, but absent from humans and animals. The pathway is a proposed target for antimicrobial therapy. Here we identified the leuA gene encoding a-isopropylmalate synthase in the zygomycete fungus Phycomyces blakesleeanus using a genetic mapping approach with crosses between wild type and leucine auxotrophic strains. To confirm the function of the gene, Phycomyces leuA was used to complement the auxotrophic phenotype exhibited by mutation of the leu3+ gene of the ascomycete fungus Schizosaccharomyces pombe. Phylogenetic analysis revealed that the leuA gene in Phycomyces, other zygomycetes, and the chytrids is more closely related to homologs in plants and photosynthetic bacteria than ascomycetes or basidiomycetes, and suggests that the Dikarya have acquired the gene more recently. The identification of leuA in Phycomyces adds to the growing body of evidence that some primary metabolic pathways or parts of them have arisen multiple times during the evolution of fungi, probably through horizontal gene transfer events.
- Research Organization:
- University of Missouri, Kansas City, MO (United States)
- Sponsoring Organization:
- National Science Foundation (NSF); USDOE Office of Science (SC), Biological and Environmental Research (BER); University of Missouri-Kansas City (UMKC)
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1627414
- Journal Information:
- PLoS ONE, Journal Name: PLoS ONE Journal Issue: 7 Vol. 5; ISSN 1932-6203
- Publisher:
- Public Library of ScienceCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Mechanistic and Bioinformatic Investigation of a Conserved Active Site Helix in α-Isopropylmalate Synthase from Mycobacterium tuberculosis, a Member of the DRE-TIM Metallolyase Superfamily
|
journal | April 2014 |
A New Genetic Linkage Map of the Zygomycete Fungus Phycomyces blakesleeanus
|
journal | March 2013 |
Risk Assessment of Abiotic Stress Tolerant GM Crops
|
book | December 2012 |
Regulation of the NADP-glutamate dehydrogenase gene gdhA in Aspergillus nidulans by the Zn(II)2Cys6 transcription factor LeuB
|
journal | December 2013 |
Similar Records
Phylogenomic Analyses Indicate that Early Fungi Evolved Digesting Cell Walls of Algal Ancestors of Land Plants
Characterization of two 2-isopropylmalate synthase homologs from Thermus thermophilus HB27
Journal Article
·
Tue May 12 20:00:00 EDT 2015
· Genome Biology and Evolution
·
OSTI ID:1625338
Characterization of two 2-isopropylmalate synthase homologs from Thermus thermophilus HB27
Journal Article
·
Fri Jun 15 00:00:00 EDT 2018
· Biochemical and Biophysical Research Communications
·
OSTI ID:23137048