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  • Title: Producer cell-dependent requirement of the Nef protein for efficient entry of HIV-1 into cells.
    Author: Tokunaga K, Kojima A, Kurata T, Ikuta K, Inubushi R, Shimano R, Kawamura M, Akari H, Koyama AH, Adachi A.
    Journal: Biochem Biophys Res Commun; 1998 Sep 29; 250(3):565-8. PubMed ID: 9784383.
    Abstract:
    A proviral nef gene mutant of human immunodeficiency virus type 1 (HIV-1) was evaluated for its defective early replication step. Virus stocks were prepared from six CD4-positive and -negative cell lines transfected with wild-type (wt) or the nef mutant clone and inoculated into two target CD4-positive cell lines to monitor the efficiency of viral entry process. The nef mutant virions produced in one cell line exhibited a severe defect in the entry process, although those produced in the other five cell lines were only slightly less efficient than the wt virions at entering into cells. These results have demonstrated that the HIV-1 Nef is critical for efficient viral entry in a producer cell-dependent manner.
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