Mouse ribonuclease III. cDNA structure, expression analysis, and chromosomal location.

Mouse ribonuclease III. cDNA structure, expression analysis, and chromosomal location.
复制标题

小鼠核糖核酸酶III。 cDNA结构,表达分析和染色体位置。

DOI:
10.1186/1471-2164-3-26
复制
发表时间:
2002-08-21
期刊:
影响因子:
4.4
通讯作者:
Nicholson, AW
Nicholson, AW
中科院分区:
生物学2区
文献类型:
--
作者:
Fortin, KR;Nicholson, RH;Nicholson, AW

文献摘要

参考文献

被引文献

相似文献

核糖核酸酶III超家族的双链(ds)-RNA特异性内切核糖核酸酶的成员参与真核和原核细胞中的多种RNA成熟和衰变途径。人RNase III直向同源物与核糖体RNA成熟有关。为了更好地了解哺乳动物RNase III的结构和机制及其参与RNA代谢,我们确定了小鼠RNase III的cDNA结构、染色体位置和表达模式。预测的小鼠RNase III多肽含有1373个氨基酸(~160 kDa)。该多肽具有单个C-末端dsRNA结合基序(dsRBM)、串联催化结构域、富含脯氨酸的区域(PRR)和RS结构域。北方分析和RT-PCR结果表明,该转录本(4487 nt)在所有检测的组织中表达,包括胚外组织和妊娠中期胚胎。北方分析表明睾丸组织中存在另外的较短形式的转录本。荧光原位杂交表明,小鼠RNase III基因映射到染色体15,区域B,而人类RNase III基因映射到染色体5 p13-p14上的同线位置。广泛的转录本表达模式表明小鼠RNA酶III具有保守的细胞作用。推定的多肽与人RNA酶III高度相似(两个催化结构域和dsRBM的氨基酸序列同一性为99%),但与其他真核直系同源物(包括参与RNA干扰的Dicer)不同。小鼠RNase III基因具有与Dicer基因不同的染色体位置。
Members of the ribonuclease III superfamily of double-stranded(ds)-RNA-specific endoribonucleases participate in diverse RNA maturation and decay pathways in eukaryotic and prokaryotic cells. A human RNase III orthologue has been implicated in ribosomal RNA maturation. To better understand the structure and mechanism of mammalian RNase III and its involvement in RNA metabolism we determined the cDNA structure, chromosomal location, and expression patterns of mouse RNase III. The predicted mouse RNase III polypeptide contains 1373 amino acids (~160 kDa). The polypeptide exhibits a single C-terminal dsRNA-binding motif (dsRBM), tandem catalytic domains, a proline-rich region (PRR) and an RS domain. Northern analysis and RT-PCR reveal that the transcript (4487 nt) is expressed in all tissues examined, including extraembryonic tissues and the midgestation embryo. Northern analysis indicates the presence of an additional, shorter form of the transcript in testicular tissue. Fluorescent in situ hybridization demonstrates that the mouse RNase III gene maps to chromosome 15, region B, and that the human RNase III gene maps to a syntenic location on chromosome 5p13-p14. The broad transcript expression pattern indicates a conserved cellular role(s) for mouse RNase III. The putative polypeptide is highly similar to human RNase III (99% amino acid sequence identity for the two catalytic domains and dsRBM), but is distinct from other eukaryotic orthologues, including Dicer, which is involved in RNA interference. The mouse RNase III gene has a chromosomal location distinct from the Dicer gene.
DOI: 10.1101/gad.11.20.2741
发表时间: 1997-10-15
影响因子: 10.5
作者:
Chanfreau, G;AbouElela, S;Guthrie, C
通讯作者: Guthrie, C
DOI: 10.1016/0300-9084(90)90192-j
发表时间: 1990-11-01
期刊: BIOCHIMIE
影响因子: 3.9
作者:
REGNIER, P;GRUNBERGMANAGO, M
通讯作者: GRUNBERGMANAGO, M
DOI: 10.1016/s0969-2126(01)00685-2
发表时间: 2001-12-01
期刊: STRUCTURE
影响因子: 5.7
作者:
Blaszczyk, J;Tropea, JE;Ji, XH
通讯作者: Ji, XH
DOI: 10.1038/35053110
发表时间: 2001-01-18
期刊: NATURE
影响因子: 64.8
作者:
Bernstein, E;Caudy, AA;Hannon, GJ
通讯作者: Hannon, GJ
DOI: 10.1016/s0378-1119(99)00571-5
发表时间: 2000-03-07
期刊: GENE
影响因子: 3.5
作者:
Filippov, V;Solovyev, V;Gill, SS
通讯作者: Gill, SS