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The rad2 gene of haloarchaeum Halobacterium salinarum is functional in the repair of ultraviolet light induced DNA photoproducts.

Abstract：

:There are a lot of bacterial and eukaryotic DNA repair gene homologs among sequenced archaeal genomes but there is little information about DNA repair mechanisms and the interaction of involved repair proteins. In order to study DNA repair mechanisms in the third domain of life, we studied these processes in the model archaeon, Halobacterium salinarum. H. salinarum has homologs of eukaryotic nucleotide excision repair genes such as rad2 gene. A functional analysis of rad2 was performed by knocking down of this gene. We introduced an antisense RNA expression vector into the cells and the sensitivity of transformants against ultraviolet light exposure was measured to determine whether rad2 gene performs any role in the repair of the DNA lesions induced by UV light or not. Our data suggests that rad2 is functional in this pathway and knocked down strains were unable to completely repair the UV induced DNA damages. In this study, for the first time antisense RNA is used for functional analysis of a gene in H. salinarum and it is shown that antisense RNA could be used as a reliable genetic tool for understanding of the archaeal genetics.

journal_name

Microbiol Res

journal_title

Microbiological research

authors

Vafadarnejad E,Amoozgar MA,Khansha J,Fallahzade R

doi

10.1016/j.micres.2015.01.012

subject

Has Abstract

pub_date

2015-04-01 00:00:00

pages

44-9

eissn

0944-5013

issn

1618-0623

pii

S0944-5013(15)00020-8

journal_volume

173

pub_type

杂志文章

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