Sequence Analysis of Gardner-Arnstein Feline Leukaemia Virus Envelope Gene Reveals Common Structural Properties of Mammalian Retroviral Envelope Genes

Overview

Journal EMBO J

Specialties Biotechnology
Molecular Biology

Date 1983 Jan 1

PMID 6321156

Citations 8

Authors

M Wunsch

A S Schulz

W Koch

R Friedrich

G Hunsmann

Affiliations

Soon will be listed here.

Abstract

We have sequenced the envelope (env) gene and most of the adjacent 3' long terminal repeat (LTR) of Gardner-Arnstein feline leukaemia virus subtype B. The LTR of this virus contains, at corresponding positions, all signal sequence elements known from other retroviral LTRs. The deduced amino acid sequence of the longest open reading frame was compared with env polypeptide sequences of several murine leukaemia viruses. This allowed us to predict the positions of both p12/15env and gp70 polypeptides as well as a hydrophobic leader polypeptide. The env polypeptides of the different viruses show long stretches of homology and similar hydrophilicity profiles in the p12env region and in the carboxy-terminal half of gp70 (constant region). The most extensive variations are confined to certain parts of the amino-terminal half of gp70 (differential region). In this region, however, feline leukaemia virus and murine mink cell focus forming viruses are still closely related. A correspondingly spaced pattern of identical, short amino acid sequences appears in three different parts of the env polyprotein, suggesting its evolution from a primordial env-related precursor by tandem duplications.

Citing Articles

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Feline Pit2 functions as a receptor for subgroup B feline leukemia viruses.

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