Current Genetics

, Volume 11, Issue 3, pp 193–200 | Cite as

Conserved and non-conserved features among the yeast T-y elements

  • Rolf Stucka
  • Joachim Hauber
  • Horst Feldmann
Original Articles

Summary

We have isolated and characterized a Ty element from a yeast cosmid library which exhibits several unsual features: it is flanked by non-homologous delta elements and directly associated with a singular delta element. A tRNA(Glu3) gene and tRNA(Cys) gene are found in conjunction with this element, located in opposite orientation on either end of it. The sequence information now available for several Ty elements has been used in a detailed comparative analysis to determine conserved features among the Ty elements, preferably between class I elements and a class II element. Highly conserved sequence motifs appear to be located at the borders of particular segments that correspond to the putative protein domains of the Tys. Furthermore, we include a comparison of the best-conserved amino acid homologies for these putative proteins of Ty elements, transposable elements from other organisms and several retroviral proviruses to confirm their close structural resemblance.

Key words

Saccharomyces cerevisiae Ty elements Transposable elements Retroviruses tRNA genes 

Abbreviations

Ty

yeast transposable element

CaMV

cauliflower mosaic virus

DIRS

Dictyostelium retroposon

DHBV

duck hepatitis B virus

HBV

(human) hepatitis B virus

HTL V2

human T-Cell lymphotropic virus type II

MMULV

Moloney murine leukemia virus

MMTV

mouse mammary tumour virus

RSV

Rous sarcoma virus

WHV

woodchuck hepatitis virus

ORF

open reading frame

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Copyright information

© Springer-Verlag 1986

Authors and Affiliations

  • Rolf Stucka
    • 1
  • Joachim Hauber
    • 1
  • Horst Feldmann
    • 1
  1. 1.Institut für Physiologische Chemie, Physikalische Biochemie und ZellbiologieUniversität MünchenMünchen 2Germany

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