CBT1 Interacts Genetically With CBP1 and the Mitochondrially Encoded Cytochrome b Gene and Is Required to Stabilize the Mature Cytochrome b mRNA of Saccharomyces cerevisiae

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CBT1 interacts genetically with CBP1 and the mitochondrially encoded cytochrome b gene and is required to stabilize the mature cytochrome b mRNA of Saccharomyces cerevisiae.

Mutation of a CCG sequence in the 5'-untranslated region of the mitochondrially encoded cytochrome b mRNA in Saccharomyces cerevisiae results in destabilization of the message and respiratory deficiency of the mutant strain. This phenotype mimics that of a mutation in the nuclear CBP1 gene. Here it is shown that overexpression of the nuclear CBT1 gene, due to a transposon insertion in the 5'-un...

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Cbp1 is required for translation of the mitochondrial cytochrome b mRNA of Saccharomyces cerevisiae.

Expression of the yeast mitochondrial cytochrome b gene (COB) is controlled by at least 15 nuclear-encoded proteins. One of these proteins, Cbp1, is required for COB mRNA stability. Delta cbp1 null strains fail to accumulate mature COB mRNA and cannot respire. Since Delta cbp1 null strains lack mature COB transcripts, the hypothesis that Cbp1 also plays a role in translation of these mRNAs coul...

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Deletion of the leader peptide of the mitochondrially encoded precursor of Saccharomyces cerevisiae cytochrome c oxidase subunit II.

Cytochrome c oxidase subunit II (Cox2p) of Saccharomyces cerevisiae is synthesized within mitochondria as a precursor, pre-Cox2p. The 15-amino acid leader peptide is processed after export to the intermembrane space. Leader peptides are relatively unusual in mitochondrially coded proteins: indeed mammalian Cox2p lacks a leader peptide. We generated two deletions in the S. cerevisiae COX2 gene, ...

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Genetic Diversity and Molecular Phylogeny of Iranian Sheep Based on Cytochrome b Gene Sequences

Phylogenetic relationships and genetic variation between two Iranian sheep breeds were analyzed using cytochrome b (cyt-b) gene sequences. The genomic DNA was isolated by salting out method and amplified cytochrome b gene using polymerase chain reaction restriction (PCR) method with a pair of primer. A partial sequence of cyt-b gene of Iranian sheep is 780 bp and contained 13 variable sites and...

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ژورنال

عنوان ژورنال: Genetics

سال: 2005

ISSN: 1943-2631

DOI: 10.1534/genetics.104.036467