Metnase/SETMAR: a domesticated primate transposase that enhances DNA repair, replication, and decatenation.

ABSTRACT: Metnase is a fusion gene comprising a SET histone methyl transferase domain and a transposase domain derived from the Mariner transposase. This fusion gene appeared first in anthropoid primates. Because of its biochemical activities, both histone (protein) methylase and endonuclease, we termed the protein Metnase (also called SETMAR). Metnase methylates histone H3 lysine 36 (H3K36), improves the integration of foreign DNA, and enhances DNA double-strand break (DSB) repair by the non-homologous end joining (NHEJ) pathway, potentially dependent on its interaction with DNA Ligase IV. Metnase interacts with PCNA and enhances replication fork restart after stalling. Metnase also interacts with and stimulates TopoIIalpha-dependent chromosome decatenation and regulates cellular sensitivity to top

SUBMITTER: Shaheen M 

PROVIDER: S-EPMC2847698 | biostudies-literature | 2010 May

REPOSITORIES: biostudies-literature