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Frohloff F, et al.  (2001) Saccharomyces cerevisiae Elongator mutations confer resistance to the Kluyveromyces lactis zymocin. EMBO J 20(8):1993-2003

Abstract: Kluyveromyces lactis killer strains secrete a zymocin complex that inhibits proliferation of sensitive yeast genera including Saccharomyces cerevisiae. In search of the putative toxin target (TOT), we used mTn3:: tagging to isolate zymocin-resistant tot mutants from budding yeast. Of these we identified the TOT1, TOT2 and TOT3 genes (isoallelic with ELP1, ELP2 and ELP3, respectively) coding for the histone acetyltransferase (HAT)-associated Elongator complex of RNA polymerase II holoenzyme. Other than the typical elp ts-phenotype, tot phenocopies hypersensitivity towards caffeine and Calcofluor White as well as slow growth and a G(1) cell cycle delay. In addition, TOT4 and TOT5 (isoallelic with KTI12 and IKI1, respectively) code for components that associate with ELONGATOR: Intriguingly, strains lacking non-Elongator HATs (gcn5, hat1, hpa3 and sas3) or non-Elongator transcription elongation factors TFIIS (dst1) and Spt4p (spt4) cannot confer resistance towards the K.lactis zymocin, thus providing evidence that Elongator equals TOT and that Elongator plays an important role in signalling toxicity of the K.lactis zymocin.

Status: Published Type: Journal Article PubMed ID: 11296232

Topics addressed in this paper

Number of different genes curated to this paper: 11

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Topics Genes linked to topics (#1 - 10 )
DST1 ELP2 ELP3 GCN5 HAT1 HPA3 IKI1 IKI3 KTI12 SAS3
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Topics Genes linked to topics (#11 )
SPT4
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Fungal Related Genes/Proteins blue ball
Mutants/Phenotypes blue ball
Primary Literature blue ball
Strains/Constructs blue ball

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