Characterization of the mammalian RNA exonuclease 5/NEF-sp as a testis-specific nuclear 3' → 5' exoribonuclease.
Characterization of the mammalian RNA exonuclease 5/NEF-sp as a testis-specific nuclear 3' → 5' exoribonuclease.
复制标题
DOI:
10.1261/rna.060723.117
复制
发表时间:
2017-09
期刊:
影响因子:
--
通讯作者:
Pillai RS
中科院分区:
文献类型:
--
作者:
Silva S;Homolka D;Pillai RS
Ribonucleases catalyze maturation of functional RNAs or mediate degradation of cellular transcripts, activities that are critical for gene expression control. Here we identify a previously uncharacterized mammalian nuclease family member NEF-sp (RNA exonuclease 5 [REXO5] or LOC81691) as a testis-specific factor. Recombinant human NEF-sp demonstrates a divalent metal ion-dependent 3′ → 5′ exoribonuclease activity. This activity is specific to single-stranded RNA substrates and is independent of their length. The presence of a 2′-O-methyl modification at the 3′ end of the RNA substrate is inhibitory. Ectopically expressed NEF-sp localizes to the nucleolar/nuclear compartment in mammalian cell cultures and this is dependent on an amino-terminal nuclear localization signal. Finally, mice lacking NEF-sp are viable and display normal fertility, likely indicating overlapping functions with other nucleases. Taken together, our study provides the first biochemical and genetic exploration of the role of the NEF-sp exoribonuclease in the mammalian genome.
登录
查看更多内容
影响因子:
13.8
作者:
Bieniossek C;Imasaki T;Takagi Y;Berger I
通讯作者:
Berger I
影响因子:
7.7
作者:
Simpson, JC;Wellenreuther, R;Wiemann, S
通讯作者:
Wiemann, S
影响因子:
14.9
作者:
Nariai, M;Tanaka, T;Okada, T;Shirai, C;Horigome, C;Mizuta, K
通讯作者:
Mizuta, K
影响因子:
2.6
作者:
Kuramochi-Miyagawa, S;Kimura, T;Nakano, T
通讯作者:
Nakano, T
影响因子:
56.9
作者:
Pillai, RS;Bhattacharyya, SN;Filipowicz, W
通讯作者:
Filipowicz, W