The complete nucleotide sequence of a 39,090 bp segment from the left arm of yeast chromosome IV was determined. Twenty-one open reading frames (ORFs) longer than 100 amino acids and a Gly-tRNA gene were discovered. Nine of the 21 ORFs (D0892, D1022, D1037, D1045, D1057, D1204, D1209, D1214, D1219) correspond to the previously sequenced Saccharomyces cerevisiae genes for the NAD-dependent glutamate dehydrogenase (GDH), the secretory component (SHR3), the GABA transport protein (UGA4), the high mobility group-like protein (NHP2), the hydroxymethylbilane synthase (HEM3), the methylated DNA protein-cysteine S-methyltransferase (MGT1), a putative sugar transport protein, the Shm1 protein (SHM1) and the anti-silencing protein (ASF2). The inferred amino acid sequences of 11 ORFs show significant similarity with known proteins from various organisms, whereas the remaining ORF does not share any similarity with known proteins.
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