Nucleic Acids Research, 1985, Vol. 13, No. 8 2745-2758
© 1985
Articles |
Nucleotide sequence and characteristics of a Ty element from yeast
Institut für Physiologische Chemie, Physikalische Biochemie und Zellbiologie der Universität München Goethestrasse 33, D 8000 München 2, FRG
*To whom correspondence should be addressed
Received February 8, 1985. Revised March 15, 1985. Accepted March 15, 1985.
We have determined the nucleotide sequence of a complete yeast Ty element (Ty-pY109) which is located near a tRNA(Lysl) gene. The element is 5912 bp in length; the internal domain is flanked by two identical delta sequences of 331 bp. Ty-pYlO9 contains two large open reading frames (ORFs) which overlap by 38 bp; the putative proteins consist of 440 and 1328 amino acid residues, respectively. The organisation of the coding sequences in Ty resembles that found in retroviral proviruses and the copia-like elements in Drosophila. Partial homologies have been found between Ty-ORF1 and tnpA from Tn3, and Ty-ORF2 and a reverse transcriptase-like domain (1,2).