tokens: G6620 is the 3 ' end of the MOL1 gene coding for a polypeptide 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 encoding a ras - related protein ; G6667 is CYS4 , the gene for cystathionine beta - synthase ; G6670 is identical to ORF2 located close to CYS4 ; G6673 is PEM1 / CHO2 encoding a phosphatidylethanolamine methyltransferase ; G7001 is the NSR1 gene coding for a nuclear signal recognition protein .