Results 121 to 130 of about 13,335 (199)

The 68 kDa subunit of mammalian cleavage factor I interacts with the U7 small nuclear ribonucleoprotein and participates in 3′-end processing of animal histone mRNAs [PDF]

open access: yes, 2017
Metazoan replication-dependent histone pre-mRNAs undergo a unique 3′-cleavage reaction which does not result in mRNA polyadenylation. Although the cleavage site is defined by histone-specific factors (hairpin binding protein, a 100-kDa zinc-finger ...
Azzouz, Teldja N.   +6 more
core  

Function of AFF1 in P-TEFb network [PDF]

open access: yes, 2016
在真核细胞中,编码蛋白的基因转录是由RNA聚合酶II(RNAPolII)通过一系列复杂有序的调控机制完成的。不断深入的研究表明过去不受重视的转录延伸步骤也存在高度有序,极为精细的调控机制,这主要得益于正性转录延伸因子b(positive-transcriptionelongationfactorb,P-TEFb)的发现及对其功能的研究。P-TEFb复合体是由激酶CDK9(Cyclindependentkinase)及其调节亚基CycT1(CyclinT1)组成的异二聚体 ...
陆华松
core  

A unique mechanism of snRNP core assembly

open access: yesNature Communications
The assembly of most spliceosomal snRNP cores involves seven Sm proteins (D1/D2/F/E/G/D3/B) forming a ring around snRNA, typically requiring essential assembly chaperones like the SMN complex, associated with spinal muscular atrophy (SMA). Strikingly, in
Yingzhi Wang   +12 more
doaj   +1 more source

Addressing the tissue specificity of U5 snRNP spliceosomopathies

open access: yesFrontiers in Cell and Developmental Biology
Precursor mRNA (pre-mRNA) must undergo splicing to remove intron sequences and join exons. This splicing process is catalysed by an RNA/protein complex called the spliceosome.
Rahmat Azhari Kemal   +2 more
doaj   +1 more source

Methylosome and SMN complexes are dispensable for snRNP assembly in Arabidopsis [PDF]

open access: gold, 2023
Daniela Goretti   +3 more
openalex   +1 more source

Cancer-associated snaR-A noncoding RNA interacts with core splicing machinery and disrupts processing of mRNA subpopulations

open access: yesNature Communications
Expansion of RNA polymerase III (Pol III) activity in cancer can activate the transcription of typically silent small RNA genes, including snaR-A (small NF90-associated RNA isoform A), a hominid-specific noncoding RNA that promotes cell proliferation ...
Sihang Zhou   +7 more
doaj   +1 more source

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