THE SEQUENCE OF A 27 KB SEGMENT ON THE RIGHT ARM OF CHROMOSOME-VII FROM SACCHAROMYCES-CEREVISIAE REVEALS MOL1, NAT2, RPL30B, RSR1, CYS4, PEM1 CHO2, NSR1 GENES AND 10 NEW OPEN READING FRAMES/

The DNA sequence of a 26 677 bp fragment from the right arm of chromos ome VII from Saccharomyces cerevisiae reveals 18 open reading frames ( ORFs) longer than 300 bp. Eight ORFs correspond to previously characte rized genes. G6620 is the 3' end of the MOL1 gene coding for a polypep tide similar to stress-inducible proteins from Fusarium; G6630 is the NAT2 gene which encodes a methionine N-acetyltransferase; G6635 is the RPL30B gene coding for the ribosomal protein L30; G6658 is RSR1 encod ing a ras-related protein; G6667 is CYS4, the gene for cystathionine b eta-synthase; G6670 is identical to ORF2 located close to CYS4; G6673 is PEM1/CHO2 encoding a phosphatidylethanolamine methyltransferase; G7 001 is the NSR1 gene coding for a nuclear signal recognition protein. G6664 shares significant homology with the ORF YKR076w from chromosome XI. The other nine ORFs show no significant homology to any protein s equence presently available in the public data bases. The sequence has been deposited in the EMBL data library under Accession Number X85807 .