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. 1994 Jun;38(6):1428–1432. doi: 10.1128/aac.38.6.1428

Novel mutation (V75T) in human immunodeficiency virus type 1 reverse transcriptase confers resistance to 2',3'-didehydro-2',3'-dideoxythymidine in cell culture.

S F Lacey 1, B A Larder 1
PMCID: PMC188226  PMID: 7522429

Abstract

We have selected a human immunodeficiency virus type 1 (HIV-1) mutant strain with a moderate (sevenfold) level of resistance to the nucleoside analog 2',3'-didehydro-2',3'-dideoxythymidine (D4T or stavudine). After serial passage of the HXB2 strain of HIV-1 in MT4 cells, a novel mutation involving two nucleotide substitutions in codon 75 of the viral reverse transcriptase, altering valine to threonine, was seen. When introduced into a wild-type HIV-1 background by site-directed mutagenesis, the T-75 mutation conferred cross-resistance to the dideoxynucleosides dideoxyinosine and dideoxycytosine as well as to 2',3'-didehydro-2',3'-dideoxycytosine.

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Selected References

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