Identification and initial characterization of the cytosolic protein Ycr77p

Abstract

The nucleotide sequence of yeast chromosome III encompassing the previously the previously described open reading frames (ORFs) YCR80w, YCR77c and YCR78c (Oliver et al., 1992) has been updated. In the corrected sequence, these ORFs are replaced by two new ORFs, YCR80w (453 bp) and YCR77c (2391 bp). In addition, the orientation of Ycr79c is reversed to give ORF Ycr79w, which has an unaltered nt sequence. The predicted translation products do not exhibit significant homology to known proteins. ORF Ycr77p encodes an 88 kDa, cytosolic protein. A fraction of the protein is associated with small membranous structures in a salt-sensitive fashion. Initial characterization revealed that the protein is not essential for yeast viability, growth on non-fermentable carbon sources, mating and sporulation. The chromosome III DNA sequence that was used for the analysis has the Accession Number X59720 in the GenBank/EMBL database.