NR AOAR
AU Martin,O.; Brandriss,M.C.; Schneider,G.; Bakalinsky,A.T.
TI Improved anaerobic use of arginine by Saccharomyces cerevisiae
QU Applied and Environmental Microbiology 2003 Mar; 69(3): 1623-8
PT evaluation studies; journal article
AB Anaerobic arginine catabolism in Saccharomyces cerevisiae was genetically modified to allow assimilation of all four rather than just three of the nitrogen atoms in arginine. This was accomplished by bypassing normal formation of proline, an unusable nitrogen source in the absence of oxygen, and causing formation of glutamate instead. A pro3 ure2 strain expressing a PGK1 promoter-driven PUT2 allele encoding Delta(1)-pyrroline-5-carboxylate dehydrogenase lacking a mitochondrial targeting sequence produced significant cytoplasmic activity, accumulated twice as much intracellular glutamate, and produced twice as much cell mass as the parent when grown anaerobically on limiting arginine as sole nitrogen source.
MH Anaerobiosis; Arginine/*metabolism; Culture Media; Gene Expression Regulation, Fungal; Genetic Engineering/*methods; Glutamic Acid/metabolism; Nitrogen/metabolism; Prions/genetics/metabolism; Pyrroline Carboxylate Reductases/genetics/metabolism; Saccharomyces cerevisiae/*growth & development/*metabolism; Saccharomyces cerevisiae Proteins/genetics/metabolism; Support, Non-U.S. Gov't; Support, U.S. Gov't, Non-P.H.S.
AD Department of Food Science and Technology, Oregon State University, Corvallis, OR 97331-6602, USA
SP englisch
PO USA