Sequencing of a 17.6 Kb Segment on the Right Arm of Yeast Chromosome Vii Reveals 12 Orfs, Including Cct, Ade3 and Tr-I Genes, Homologues of the Yeast Pmt and Ef1G Genes, of the Human and Bacterial Electron-Transferring Flavoproteins (Beta-Chain) and of the Escherichia Coli Phosphoserine Phosphohydrolase, and Five New Orfs