SGD Paper Help



Hurto RL and Hopper AK  (2011) P-body components, Dhh1 and Pat1, are involved in tRNA nuclear-cytoplasmic dynamics. RNA 17(5):912-24

Abstract: The nuclear-cytoplasmic distribution of tRNA depends on the balance between tRNA nuclear export/re-export and retrograde tRNA nuclear import in Saccharomyces cerevisiae. The distribution of tRNA is sensitive to nutrient availability as cells deprived of various nutrients exhibit tRNA nuclear accumulation. Starvation induces numerous events that result in translational repression and P-body formation. This study investigated the possible coordination of these responses with tRNA nuclear-cytoplasmic distribution. Dhh1 and Pat1 function in parallel to promote translation repression and P-body formation in response to starvation. Loss of both, Dhh1 and Pat1, results in a failure to repress translation and to induce P-body formation in response to glucose starvation. This study reports that nutrient deprived dhh1 pat1 cells also fail to accumulate tRNA within nuclei. Conversely, inhibition of translation initiation and induction of P-body formation by overproduction of Dhh1 or Pat1 cause tRNA nuclear accumulation in nutrient-replete conditions. Also, loss of the mRNA decapping activator, Lsm1, causes tRNA nuclear accumulation. However, the coordination between P-body formation, translation repression, and tRNA distribution is limited to the early part of the P-body formation/translation repression pathway as loss of mRNA decapping or 5' to 3' degradation does not influence tRNA nuclear-cytoplasmic dynamics. The data provide the first link between P-body formation/translation initiation and tRNA nuclear-cytoplasmic dynamics. The current model is that Dhh1 and Pat1 function in parallel to promote starvation-induced tRNA nuclear accumulation.

Status: Published Type: Journal Article PubMed ID: 21398402

Topics addressed in this paper

Number of different genes curated to this paper: 24

Jump to Summary Chart for:

  • To find other papers on a gene and topic, click on the colored ball in the appropriate box.
  • displays other papers with information about that topic for that gene.
  • displays other papers in SGD that are associated with that topic.
    The topic is addressed in these papers but does not describe a specific gene or chromosomal feature.
  • To go to the Locus page for a gene, click on the gene name.
Topics Genes linked to topics (#1 - 10 )
DCP2 DHH1 LSM1 MTR10 PAT1 PRT1 SUP11 SUP2 SUP3 SUP4
Additional Literature blue ball blue ball blue ball blue ball blue ball blue ball
Cellular Location blue ball blue ball blue ball blue ball blue ball
Genetic Interactions blue ball blue ball blue ball blue ball blue ball
Mutants/Phenotypes blue ball blue ball blue ball blue ball blue ball
Primary Literature blue ball blue ball blue ball blue ball
Protein Sequence Features blue ball blue ball
Regulation of blue ball blue ball blue ball blue ball
Strains/Constructs blue ball blue ball blue ball blue ball blue ball blue ball

Topics Genes linked to topics (#11 - 20 )
SUP5 SUP6 SUP7 SUP8 tH(GUG)E1 tH(GUG)E2 tH(GUG)G1 tH(GUG)G2 tH(GUG)H tH(GUG)K
Additional Literature blue ball blue ball blue ball blue ball blue ball blue ball blue ball blue ball blue ball blue ball
Cellular Location blue ball blue ball blue ball blue ball blue ball blue ball blue ball blue ball blue ball blue ball
Regulation of blue ball blue ball blue ball blue ball blue ball blue ball blue ball blue ball blue ball blue ball

Topics Genes linked to topics (#21 - 24 )
tH(GUG)M tH(GUG)Q tY(GUA)Q XRN1
Additional Literature blue ball blue ball blue ball blue ball
Alias blue ball
Cellular Location blue ball blue ball blue ball
Regulation of blue ball blue ball blue ball

Author Searches

To find contact information or other publications by the authors of this paper, follow these three steps:
  1. (1) Choose an author,
  2. (2) Choose a search parameter,
  3. (3) Click to implement