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A C-terminal domain in the avian sarcoma-leukosis virus pol gene product is not essential for viral replication.

Abstract
The virion proteins encoded by the avian retroviral pol gene (reverse transcriptase and endonuclease) are formed by the proteolytic processing of a gag-pol fusion protein precursor. Recent studies have predicted that the avian sarcoma-leukosis virus pol precursor protein undergoes a previously undetected processing event resulting in the formation of common C termini for the endonuclease (pp32) and the beta subunit of reverse transcriptase (F. Alexander, J. Leis, D. A. Soltis, R. M. Crowl, W. Danho, M. S. Poonian, Y.-C. E. Pan, and A. M. Skalka, J. Virol. 61:534-542, 1987; D. Grandgenett, T. Quinn, P. J. Hippenmeyer, and S. Oroszlan, J. Biol. Chem. 260:8243-8249, 1985). This processing event removes 37 amino acids, thus defining a new pol domain. In this report, we present evidence that this C-terminal domain is translated as part of the gag-pol precursor but is not required for replication of the virus in tissue culture cells.
AuthorsR A Katz, A M Skalka
JournalJournal of virology (J Virol) Vol. 62 Issue 2 Pg. 528-33 (Feb 1988) ISSN: 0022-538X [Print] UNITED STATES
PMID2447290 (Publication Type: Journal Article)
Chemical References
  • Codon
  • Protein Precursors
  • Retroviridae Proteins
  • avian retrovirus proteins
  • RNA-Directed DNA Polymerase
  • Endodeoxyribonucleases
Topics
  • Amino Acid Sequence
  • Animals
  • Avian Leukosis Virus (genetics, physiology)
  • Avian Sarcoma Viruses (genetics, physiology)
  • Base Sequence
  • Chick Embryo
  • Codon (genetics)
  • Endodeoxyribonucleases (genetics, metabolism)
  • Fibroblasts
  • Genes, Viral
  • Molecular Sequence Data
  • Mutation
  • Protein Biosynthesis
  • Protein Precursors (genetics, metabolism)
  • RNA-Directed DNA Polymerase (genetics, metabolism)
  • Retroviridae Proteins (genetics, metabolism)
  • Transfection
  • Virus Replication

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