SSD1

Symbol: SSD1
Name: Suppressor of SIT4 Deletion 1
Entrez gene ID: 851887
Ensembl gene ID: YDR293C
Species: Yeast (Taxid: 4932)

Functional description:
Ssd1p; Translational repressor with a role in polar growth and wall integrity; regulated by Cbk1p phosphorylation to effect bud-specific translational control and localization of specific mRNAs; interacts with TOR pathway components; contains a functional /.../inal nuclear localization sequence and nucleocytoplasmic shuttling appears to be critical to Ssd1p function [Source:SGD;Acc:S000002701] [Ensembl]; Translational repressor with a role in polar growth and wall integrity; regulated by Cbk1p phosphorylation to effect bud-specific translational control and localization of specific mRNAs; interacts with TOR pathway components; contains a functional N-terminal nuclear localization sequence and nucleocytoplasmic shuttling appears to be critical to Ssd1p function [SGD]

Observation:

Overexpression of SSD1 (addition of a SSD1-V allele) increases replicative lifespan by 50%, independently of SIR2 and SIR2 further extends the lifespan, although SIR2 is necessary for SSD1-V cells to attain maximal lifespan [15126388]. SSD1-V also dramatically increases chronological lifespan with lifespan twice as long as ssd1-d cells [19570907]. Deletion of SSD1 increases replicative lifespan by 50% [Li et al., 2009].

Addition of SSD1-V allele to an ssd1-d strain suppresses the short lifespan of an MPT5 deletion mutant [11805047] and extend wild-type lifespan [Kaeberlein and Guarente, unpublished].

SSD1-V slightly extends the lifespan of swi4 and ccr4 mutant strains and suppresses the temperature sensitive growth phenotype of mpt5, ccr3, swi4, and swi6 single mutants [11805047]. SSD1-V also suppresses the synthetic lethality caused by deletion of MPT5 in combination with a mutation in SWI4, SWI6, or CCR4 [11805047]. SSD1-V suppresses mutations that affect cell wall stability [1545797; 8386319], RNA polymerase III activity [8510644], RNA splicing [10446233], and PKA activity [1848673; 8200529].



Interventions:
  • SSD1-V overexpression +50 to +100%
  • SSD1 deletion +50%

  • Assays: Replicative Lifespan Chronological Lifespan

    Classification:
  • Aging-Suppressor
  • Positive Aging-Suppressor
  • Gerontogene
  • Positive Gerontogene


  • Aging Relevance Analysis/Source:
  • GenAge
  • GenDR

  • Homologs
  • SSD1 (4932)
  • KLLA0C10571g (28985)
  • AGOS_AAL072C (33169)
  • GeneID:2678286 (148305)
  • NCU01197 (5141)

  • Note: Is SSD1-V allele a gain or loss of function mutation?

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