Retroviral DNA Integration.

Archive ouverte

Lesbats, Paul | Engelman, Alan N | Cherepanov, Peter

Edité par CCSD ; American Chemical Society -

International audience. The integration of a DNA copy of the viral RNA genome into host chromatin is the defining step of retroviral replication. This enzymatic process is catalyzed by the virus-encoded integrase protein, which is conserved among retroviruses and LTR-retrotransposons. Retroviral integration proceeds via two integrase activities: 3'-processing of the viral DNA ends, followed by the strand transfer of the processed ends into host cell chromosomal DNA. Herein we review the molecular mechanism of retroviral DNA integration, with an emphasis on reaction chemistries and architectures of the nucleoprotein complexes involved. We additionally discuss the latest advances on anti-integrase drug development for the treatment of AIDS and the utility of integrating retroviral vectors in gene therapy applications.

Suggestions

Du même auteur

Structural basis for spumavirus GAG tethering to chromatin.

Archive ouverte | Lesbats, Paul | CCSD

International audience. The interactions between a retrovirus and host cell chromatin that underlie integration and provirus expression are poorly understood. The prototype foamy virus (PFV) structural protein GAG a...

B-to-A transition in target DNA during retroviral integration

Archive ouverte | Jóźwik, Ilona | CCSD

International audience. Abstract Integration into host target DNA (tDNA), a hallmark of retroviral replication, is mediated by the intasome, a multimer of integrase (IN) assembled on viral DNA (vDNA) ends. To ascert...

Structural basis for functional tetramerization of lentiviral integrase.

Archive ouverte | Hare, Stephen | CCSD

International audience. Experimental evidence suggests that a tetramer of integrase (IN) is the protagonist of the concerted strand transfer reaction, whereby both ends of retroviral DNA are inserted into a host cel...

Chargement des enrichissements...