Homologous maturase-like proteins are encoded within the group I introns in different mitochondrial genes specifying Yarrowia lipolytica cytochrome c oxidase subunit 3 and Saccharomyces cerevisiae apocytochrome b

1994 ◽  
Vol 26 (5-6) ◽  
pp. 377-381 ◽  
Author(s):  
Masayoshi Matsuoka ◽  
Masaaki Matsubara ◽  
Masao Kakehi ◽  
Tadayuki Imanaka

Genetics ◽  
2009 ◽  
Vol 182 (2) ◽  
pp. 519-528 ◽  
Author(s):  
Heather L. Fiumera ◽  
Maitreya J. Dunham ◽  
Scott A. Saracco ◽  
Christine A. Butler ◽  
Jessica A. Kelly ◽  
...  






1990 ◽  
Vol 10 (3) ◽  
pp. 1297-1300 ◽  
Author(s):  
R M Wright ◽  
R O Poyton

We show here that SNF1 and SSN6 are required for derepression of the glucose-repressible yeast genes COX6 and CYC1, which encode the mitochondrial proteins cytochrome c oxidase subunit VI and iso-1-cytochrome c, respectively. In an snf1 mutant genetic background, the transcription of both COX6 and CYC1 continued to be repressed after cells were shifted into derepressing media. In an ssn6 mutant genetic background, both COX6 and CYC1 were expressed constitutively at high levels in repressing media. SSN6 acted epistatically to SNF1 in the regulation of both cytochrome genes. These findings are similar to previous findings on the effects of SNF1 and SSN6 on SUC2 expression in Saccharomyces cerevisiae and are consistent with a model proposing that SNF1 exerts its effect through SSN6 on COX6 and CYC1.





1990 ◽  
Vol 10 (9) ◽  
pp. 4984-4986 ◽  
Author(s):  
L K Dircks ◽  
R O Poyton

Subunit Va of Saccharomyces cerevisiae cytochrome c oxidase is a nucleus-encoded mitochondrial protein that is derived from a precursor with a 20-residue leader peptide. We previously reported that this leader peptide is required for import of subunit Va into mitochondria in vivo (S. M. Glaser, C. E. Trueblood, L. K. Dircks, R. O. Poyton, and M. G. Cumsky, J. Cell. Biochem. 36:275-278, 1988). Here we show that overproduction of a leaderless form of subunit Va circumvents the leader peptide requirement for import into mitochondria in vivo.



2000 ◽  
Vol 37 (4) ◽  
pp. 213-220 ◽  
Author(s):  
M. Siep ◽  
K. van Oosterum ◽  
H. Neufeglise ◽  
H. van der Spek ◽  
L. A. Grivell


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