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J Virol. 1994 December; 68(12): 7697-7703

Properties of a unique form of the murine amphotropic leukemia virus receptor expressed on hamster cells.

C A Wilson, K B Farrell and M V Eiden

Unit on Molecular Virology, National Institute of Mental Health, Bethesda, Maryland 20892-4068.

ABSTRACT

Identification and cloning of the receptors for amphotropic murine leukemia virus (A-MuLV) and gibbon ape leukemia virus (GaLV) have both enabled the determination of the normal function of these virus receptors in cells and initiated experimental examination of how these receptors interact with their respective viruses. GaLV and A-MuLV have distinct host ranges and use different receptors to infect human cells. It was therefore surprising to find that the human GaLV and A-MuLV receptors were not only structurally similar but performed similar cellular functions (B. O'Hara, S. V. Johann, H. P. Klinger, D. G. Blair, H. Rubinson, K. J. Dunn, P. Sass, S. M. Vitek, and T. Robbins, Cell Growth Differ. 1:119-127, 1990; M. van Zeijl, S. V. Johann, E. Closs, J. Cunningham, R. Eddy, T. B. Shows, and B. O'Hara, Proc. Natl. Acad. Sci. USA 91:1168-1172, 1994; M. P. Kavanaugh, D. G. Miller, W. Zhang, W. Law, S. L. Kozak, D. Kabat, and A. D. Miller, Proc. Natl. Acad. Sci. USA 91:7071-7075, 1994; and Z. Olah, C. Lehel, W. B. Anderson, M. V. Eiden, and C. A. Wilson, J. Biol. Chem., in press). We have now determined that the murine retrovirus 10A1 can use both the human GaLV receptor and the human A-MuLV receptor to infect cells. Furthermore, we have cloned and functionally characterized a unique form of the amphotropic receptor homolog expressed in E36 hamster cells. This receptor (EAR) can serve as both a GaLV receptor and an A-MuLV receptor, and it therefore differs from the receptors expressed in human cells, which function exclusively as either GaLV or A-MuLV receptors.


J Virol. 1994 December; 68(12): 7697-7703




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