@article{,
title = {Effects of tRNA 3 Lys aminoacylation on the initiation of HIV-1 reverse transcription},
author = {M Rigourd and G Bec and P Benas and S F Le Grice and B Ehresmann and C Ehresmann and R Marquet},
url = {http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=12763311},
isbn = {12763311},
year = {2003},
date = {2003-01-01},
journal = {Biochimie},
volume = {85},
number = {5},
pages = {521-525},
abstract = {HIV-1 utilizes cellular tRNA(3)(Lys) to prime the initiation of reverse transcription. The selective incorporation of cytoplasmic tRNA(3)(Lys) into HIV-1 particles was recently shown to involve the lysyl-tRNA synthetase, and hence, the encapsidated tRNA(3)(Lys) is likely to be aminoacylated. Here, we tested the effect of aminoacylation on the initiation of reverse transcription. We show that HIV-1 reverse transcriptase is unable to extend lysyl-tRNA(3)(Lys). In addition, the viral polymerase does not significantly enhance the rate of tRNA deacylation, in contrast with previous studies on avian retroviruses. Thus, aminoacylation of the primer tRNA might prevent the initiation of HIV-1 reverse transcription from taking place before viral budding and maturation.},
note = {0300-9084
Journal Article},
keywords = {Acetyltransferases/metabolism *Acylation Animals Cattle HIV-1/*physiology HIV-1 Reverse Transcriptase/pharmacology RNA/genetics RNA, Genetic/drug effects/*physiology Virus Assembly, Lys/*chemistry/drug effects Support, MARQUET, Non-U.S. Gov't Transcription, Transfer, Unité ARN},
pubstate = {published},
tppubtype = {article}
}
HIV-1 utilizes cellular tRNA(3)(Lys) to prime the initiation of reverse transcription. The selective incorporation of cytoplasmic tRNA(3)(Lys) into HIV-1 particles was recently shown to involve the lysyl-tRNA synthetase, and hence, the encapsidated tRNA(3)(Lys) is likely to be aminoacylated. Here, we tested the effect of aminoacylation on the initiation of reverse transcription. We show that HIV-1 reverse transcriptase is unable to extend lysyl-tRNA(3)(Lys). In addition, the viral polymerase does not significantly enhance the rate of tRNA deacylation, in contrast with previous studies on avian retroviruses. Thus, aminoacylation of the primer tRNA might prevent the initiation of HIV-1 reverse transcription from taking place before viral budding and maturation.