Putative proteins related to group II intron reverse transcriptase/maturases are encoded by nuclear genes in higher plants.

ABSTRACT: The Arabidopsis thaliana nuclear genome sequence revealed several open reading frames encoding proteins related to group II intron-encoded reverse transcriptase/maturases. Here, we show via sequence alignments that at least four such open reading frames are conserved in the nuclear genomes of A.thaliana and Oryza sativa (rice) and that they encode putative proteins belonging to two different classes (nMat-1 and nMat-2), neither of which is associated with a group II intron RNA structure. The two nMat-1 proteins have reverse transcriptase, maturase and DNA endonuclease domains characteristic of canonical group II intron-encoded proteins, while the two nMat-2 proteins have reverse transcriptase and maturase domains linked to a novel C-terminal domain. Although some nMat proteins have mutatio

SUBMITTER: Mohr G 

PROVIDER: S-EPMC140517 | biostudies-literature | 2003 Jan

REPOSITORIES: biostudies-literature