首页 | 本学科首页   官方微博 | 高级检索  
   检索      


Involvement of Candida albicans NADH dehydrogenase complex I in filamentation
Authors:McDonough Justin A  Bhattacherjee Vasker  Sadlon Tania  Hostetter Margaret K
Institution:Department of Pediatrics and Center for Microbial Pathogenesis, Yale University School of Medicine, 464 Congress Avenue, New Haven, CT 06519, USA.
Abstract:The gene encoding the 51-kDa subunit of nicotinamide adenine dinucleotide (NADH) dehydrogenase complex I, a principal component of the mitochondrial electron transport chain, was cloned in Candida tropicalis. The homolog in C. albicans, CaNDH51, was identified, and each allele was successively disrupted by PCR-mediated gene disruption. Wild type, heterozygote, reintegrant, and homozygous null mutants grew as blastoconidia in rich medium containing 3% glucose, but the homozygous null mutant failed to grow in ethanol or acetate. When glucose concentration was varied from 1 mM (0.018%) to 200 mM (3.6%) in a basal salts medium, all strains grew equally well at all glucose concentrations; the wild-type strain, the heterozygote, and the reintegrant exhibited abundant germ tubes, pseudohyphae, and hyphae. In contrast, the ndh51/ndh51 strain failed to display any type of filamentous growth, even in glucose concentrations as low as 1 mM. These results suggest a previously unexplored relationship between mitochondrial electron transport and morphogenesis.
Keywords:
本文献已被 PubMed 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号