REM1, a new type of long terminal repeat retrotransposon in Chlamydomonas reinhardtii.

ABSTRACT: A new long terminal repeat (LTR) retrotransposon, named REM1, has been identified in the green alga Chlamydomonas reinhardtii. It was found in low copy number, highly methylated, and with an inducible transpositional activity. This retrotransposon is phylogenetically related to Ty3-gypsy LTR retrotransposons and possesses new and unusual structural features. A regulatory module, ORF3p, is present in an inverse transcriptional orientation to that of the polyprotein and contains PHD-finger and chromodomains, which might confer specificity of the target site and are highly conserved in proteins involved in transcriptional regulation by chromatin remodeling. By using different wild-type and mutant strains, we show that CrREM1 was active with a strong transcriptional activity and amplified its

SUBMITTER: Perez-Alegre M 

PROVIDER: S-EPMC1291216 | biostudies-literature | 2005 Dec

REPOSITORIES: biostudies-literature