Abstract
We have sequenced a region containing 32.5 kb of the right arm of chromosome IV of Saccharomyces cerevisiae. Twenty open reading frames (ORFs) greater than 100 amino acids could be identified in this region. Six ORFs correspond to known yeast genes, including DOA4, UBC5 and UBC3, the gene products of which are involved in ubiquitin metabolism. UBC5 is preceded by the two tRNA genes tRNA-Arg2 and tRNA-Asp. Six genes were discovered with homologies to non-yeast genes or with homologies to other yeast ORFs. One of these could be identified as ribosomal protein gene RPS13. The putative function of eight ORFs remains unclear because comparison to different DNA or protein databases revealed no significant patterns. The sequence from cosmid 2F21 was obtained entirely by a combined subcloning and walking primer strategy, and has been deposited in the EMBL data library under Accession Number X84162.
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