| gene products, vif | A 23 kD regulatory protein important for virion infectivity in HIV. The protein is found in the cytoplasm of HIV-infected cells and is not absolutely required for virion formation. (12 Dec 1998) |
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| genes, vif | DNA sequences that form the coding region for the vif (virion infectivity factor) protein that is important for the generation of infectious virions in human immunodeficiency virus (HIV). The former name of this gene was sor (short open reading frame). (12 Dec 1998) |