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J Virol. 1992 Mar;66(3):1635-40.

GLVR1, a receptor for gibbon ape leukemia virus, is homologous to a phosphate permease of Neurospora crassa and is expressed at high levels in the brain and thymus.

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  • 1Molecular Biology Research Section, American Cyanimid Company, Pearl River, New York 10965.


The human gene GLVR1 has been shown to render mouse cells sensitive to infection by gibbon ape leukemia virus. This indication that the GLVR1 protein acts as a virus receptor does not reveal the protein's normal physiological role. We now report that GLVR1 is homologous to pho-4+, a phosphate permease of Neurospora crassa, at a level sufficiently high to predict that GLVR1 is also a transport protein, although the substrate transported remains unknown. To characterize the gene further, we have cloned cDNA for the mouse homolog of the gene, Glvr-1. The sequence of the murine protein differs from that of the human protein in 10% of residues, and it may be presumed that some of these differences are responsible for the inability of gibbon ape leukemia virus to infect mouse fibroblasts. Glvr-1 RNA is most abundant in mouse brain and thymus, although it is present in all tissues examined. The pattern of RNA expression found in mouse tissues was also found in rat tissues, in which the RNA was expressed at high levels in all compartments of the brain except the caudate nucleus and was expressed most abundantly early in embryogenesis. Thus, high-level expression of Glvr-1 appears to be restricted to specific tissues and may have developmental consequences.

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