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Gene Review

MBR1  -  Mbr1p

Saccharomyces cerevisiae S288c

Synonyms: Mitochondrial biogenesis regulation protein 1, YKL093W, YKL440
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High impact information on MBR1

  • Deletion of SAC1, a gene implicated in vesicular transport, in association with MBR1 deletion, causes synthetic lethality [1].
  • The MBR1 gene was isolated as a multicopy suppressor of the phenotype on glycerol medium of a Saccharomyces cerevisiae strain mutant for the Hap2/3/4/5 transactivator complex [1].
  • Both activation of PKA or overexpression of SOK1 or SCH9-two genes isolated as multicopy suppressors of a PKA null mutant-suppress the mbr1 growth defect [1].
  • In this paper, we show that Mbr1p is a limiting factor for growth on glycerol medium under the following sub-optimal culture conditions: in late growth phase, at low temperature, at high external pH or in the presence of 1,10-phenanthroline [1].
  • Disruption of MBR3 has no major effect but the double disruptant shows a synthetic phenotype suggesting that the MBR1 and MBR3 gene products participate in common function [2].

Biological context of MBR1


Anatomical context of MBR1

  • Two of them (ts 1398, cs 909) impair the mitochondrial ribosome; they were used to characterize new interacting components as well as two genes, MBR1 and MBR2, which control the assembly or the regulation of other genes involved in mitochondrial protein synthesis [5].

Other interactions of MBR1

  • Nucleotide sequencing of MBR1 and MBR3 revealed that these two genes encode serine-rich, hydrophilic proteins with regions of significant homology [2].


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