J. Lennerstrand et al., Biochemical mechanism of human immunodeficiency virus type 1 reverse transcriptase resistance to stavudine, ANTIM AG CH, 45(7), 2001, pp. 2144-2146
We have found a close correlation between viral stavudine (d4T) resistance
and resistance to d4T-triphosphate at the human immunodeficiency virus type
1 reverse transcriptase (RT) level, RT from site-directed mutants with 69S
-XX codon insertions and/or conventional zidovudine resistance mutations se
ems to be involved in an ATP-dependent resistance mechanism analogous to py
rophosphorolysis, whereas the mechanism for RT with the Q151M or V75T mutat
ion appears to be independent of added ATP for reducing binding to d4T-trip
hosphate.