The Nopp140 gene in Drosophila melanogaster displays length polymorphisms in its large repetitive second exon
The Nopp140 gene in Drosophila melanogaster displays length polymorphisms in its large repetitive second exon
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果蝇中的 Nopp140 基因在其大重复第二外显子中显示出长度多态性
DOI:
10.1007/s00438-019-01568-6
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发表时间:
2019
影响因子:
3.1
通讯作者:
DiMario, Patrick J.
中科院分区:
文献类型:
--
作者:
Baral, Sonu Shrestha;DiMario, Patrick J.
Nopp140, often called the nucleolar and Cajal body phosphoprotein (NOLC1), is an evolutionarily conserved chaperone for the transcription and processing of rRNA during ribosome subunit assembly. Metazoan Nopp140 contains an amino terminal LisH dimerization domain and a highly conserved carboxyl domain. A large central domain consists of alternating basic and acidic motifs of low sequence complexity. Orthologous versions of Nopp140 contain variable numbers of repeating basic–acidic units. While vertebrateNopp140genes use multiple exons to encode the central domain, theNopp140gene inDrosophilauses exclusively exon 2 to encode the central domain. Here, we define three overlapping repeat sequence patterns (P, P′, and P″) within the central domain ofD. melanogasterNopp140. These repeat patterns are poorly conserved in otherDrosophilaspecies. We also describe a length polymorphism in exon 2 that pertains specifically to the P′ pattern inD. melanogaster. The pattern displays either two or three 96 base pair repeats, respectively, referred to asNopp140-ShortandNopp140-Long. Fly lines homozygous for one or the other allele, or heterozygous for both alleles, show no discernible phenotypes. PCR characterization of the long and short alleles shows a poorly defined, artifactual bias toward amplifying the long allele over the short allele. The significance of this polymorphism will be in discerning the largely unknown properties of Nopp140’s large central domain in rDNA transcription and ribosome biogenesis.
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DOI:
10.1016/s0021-9258(19)84375-2
发表时间:
1996-08
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
U. Meier
通讯作者:
U. Meier
影响因子:
--
作者:
Kelly, S.;Singleton, W.;Gull, K.
通讯作者:
Gull, K.
影响因子:
5.3
作者:
Hung-Kai Chen;C. Pai;Jingrong Huang;N. Yeh
通讯作者:
Hung-Kai Chen;C. Pai;Jingrong Huang;N. Yeh
DOI:
10.1016/j.biocel.2008.10.026
发表时间:
2009-06
影响因子:
4
作者:
Sakai, Daisuke;Trainor, Paul A.
通讯作者:
Trainor, Paul A.
DOI:
10.1073/pnas.94.7.3110
发表时间:
1997-04-01
影响因子:
11.1
作者:
Wise, CA;Chiang, LC;Jabs, EW
通讯作者:
Jabs, EW