Venegas A, et al. (1979)

Abstract

A library of cloned yeast DNA fragments generated by digestion of yeast DNA with the restriction endonuclease Bam HI has been screened by colony hybridization to total yeast [32P]tRNA. Four hundred colonies carrying yeast tRNA genes were isolated. By hybridization to 125I-tRNALeu3, we have isolated from this collection 14 colonies carrying fragments containing yeast tRNALeu genes. The size of the yeast Bam HI inserts ranged from 2.45 x 10(6) to 14 x 10(6) daltons. One of these fragments was mapped in detail by restriction endonuclease digestion and hybridization to 125I-tRNALeu3. The presence of a tRNALeu3 gene was confirmed by DNA sequence. The results indicate that the tRNALeu3 coding region is not co-linear with the tRNALeu3. An intervening tract of 33 base pairs interrupts the coding sequences 1 base pair past the anticodon coding region. The putative structure of a tRNALeu3 precursor is deduced in which the anticodon base pairs with residues from the intervening sequence.

PMID: 387786
PubMed
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Reference Type: Journal Article | Research Support, U.S. Gov't, P.H.S.
Authors: Venegas A, Quiroga M, Zaldivar J, Rutter WJ, Valenzuela P
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Additional Lit For: YNCD0031C
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