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Gene Review

TSC13  -  trans-2-enoyl-CoA reductase (NADPH) TSC13

Saccharomyces cerevisiae S288c

Synonyms: D2865, Enoyl reductase TSC13, Temperature-sensitive CSG2 suppressor protein 13, Trans-2-enoyl-CoA reductase, Very-long-chain enoyl-CoA reductase, ...
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High impact information on TSC13

  • Tsc13p localizes to the endoplasmic reticulum and is highly enriched in a novel structure marking nuclear-vacuolar junctions [1].
  • Compromising the synthesis of malonyl coenzyme A (malonyl-CoA) by inactivating acetyl-CoA carboxylase in a tsc13 mutant is lethal, further supporting a role of Tsc13p in VLCFA synthesis [1].
  • These results indicate that Nvj1p retains and compartmentalizes Tsc13p at NV junctions and that VLCFAs contribute to the normal biogenesis of trilaminar PMN structures in yeast [2].
  • Tsc13p is a polytopic endoplasmic reticulum (ER) membrane protein that accumulates at nucleus-vacuole (NV) junctions, which are formed through Velcro-like interactions between Nvj1p in the perinuclear ER and Vac8p on the vacuole membrane [2].
  • The targeting of Tsc13p-GFP into NV junctions is perturbed by cerulenin, suggesting that its binding to Nvj1p depends on the availability of fatty acid substrates [2].

Biological context of TSC13

  • The studies presented here demonstrate that heterologous expression of At3g55360 functionally complements the temperature-sensitive phenotype of a yeast tsc13 mutant that is deficient in enoyl reductase activity [3].
  • Targeting of Tsc13p to nucleus-vacuole junctions: a role for very-long-chain fatty acids in the biogenesis of microautophagic vesicles [2].
  • In response to nutrient depletion, Nvj1p increasingly binds and sequesters two proteins with roles in lipid metabolism, Osh1p and Tsc13p [4].

Other interactions of TSC13

  • Green fluorescent protein-tagged Ybr159p co-localizes and co-immunoprecipitates with other elongating enzymes, Elo3p and Tsc13p [5].


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