Minus-strand DNA synthesis

Stable Identifier
Homo sapiens
Related Species
Human immunodeficiency virus 1
minus-strand DNA synthesis
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In the first part of reverse transcription, minus-strand synthesis, a DNA strand complementary to the HIV genomic RNA is synthesized, using the viral RNA as a template and a host cell lysine tRNA molecule as primer. The synthesis proceeds in two discrete steps, separated by a strand transfer event. As minus strand DNA is synthesized, the viral genomic RNA is degraded, also in several discrete steps. Two specific polypurine tracts (PPT sequences) in the viral RNA, one within the pol gene (central or cPPT) and one immediately preceding the U3 sequence (3' PPT) are spared from degradation and serve to prime synthesis of DNA complementary to the minus strand (plus-strand synthesis). During plus-strand synthesis, Preston and colleagues observed secondary sites of plus-strand initiation at low frequency both in the cell-free system and in cultured virus (Klarman et al., 1997). Both DNA synthesis and RNA degradation activities are catalyzed by the HIV-1 reverse transcriptase (RT) heterodimer.

Literature References
PubMed ID Title Journal Year
7514143 The reverse transcriptase of HIV-1: from enzymology to therapeutic intervention

Nevinsky, GA, Litvak, S, Tarrago-Litvak, L, Andreola, ML, Sarih-Cottin, L

FASEB J 1994
10723025 The HIV-1 reverse transcription (RT) process as target for RT inhibitors

De Clercq, E, Anne, J, Jonckheere, H

Med Res Rev 2000
1282352 Retroviral reverse transcription and integration: progress and problems

Whitcomb, JM, Hughes, SH

Annu Rev Cell Biol 1992
1382072 Interaction of tRNALys with the p66/p66 form of HIV-1 reverse transcriptase stimulates DNA polymerase and ribonuclease H activities

Nevinsky, GA, Litvak, S, Tarrago-Litvak, L, Bordier, B, Andreola, ML, Barr, PJ, Fournier, M, Sarih-Cottin, L

J Biol Chem 1992

Varmus, HE, Hughes, SH, Coffin, JM

Event Information
Name Identifier Synonyms
Human immunodeficiency virus infectious disease DOID:526 HIV infection
Cross References
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