THE ERG3 GENE IN SACCHAROMYCES-CEREVISIAE IS REQUIRED FOR THE UTILIZATION OF RESPIRATORY SUBSTRATES AND IN HEME-DEFICIENT CELLS

被引:42
作者
SMITH, SJ [1 ]
PARKS, LW [1 ]
机构
[1] N CAROLINA STATE UNIV, DEPT MICROBIOL, BOX 7615, RALEIGH, NC 27695 USA
关键词
SACCHAROMYCES-CEREVISIAE; STEROL; DESATURASE; ERGOSTEROL; EPISTEROL;
D O I
10.1002/yea.320091104
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
ERG3 is the structural gene in Saccharomyces cerevisiae for the sterol DELTA5 desaturase that introduces the C5=6 unsaturation in ergosterol biosynthesis. The ERG3 gene has been mapped on chromosome XII, 13.7 centimorgans from GAL2 toward SPT8. The essentiality of the gene is dependent on the conditions used for the cultivation of the mutants. Insertionally inactivated mutants of ERG3 fail to grow without 'sparking' levels of DELTA5 sterols in heme-deficient cells, and are unable to grow on the respiratory substrates glycerol and ethanol.
引用
收藏
页码:1177 / 1187
页数:11
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