We have determined the complete nucleotide sequence of a 29.7 kb segment from the right arm of chromosome II carried by the cosmid alpha 61. The sequence encodes the 3' region of the IRA1 gene and 13 complete open reading frames, of which ten correspond to new genes and three (CIF1, ATPsv and CKS1) have been sequenced previously. The density of protein coding sequences is particularly high and corresponds to 84% of the total length. Two new genes encode membrane proteins, one of which is particularly large, 273 kDa. In one case (ATPsv), the comparison of our sequence and the published sequence reveals significant differences.
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