NCBP3: A Multifaceted Adaptive Regulator of Gene Expression.

NCBP3: A Multifaceted Adaptive Regulator of Gene Expression.
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DOI:
10.1016/j.tibs.2020.09.003
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发表时间:
2021-03
影响因子:
13.8
通讯作者:
Maquat LE
Maquat LE
中科院分区:
生物学1区
文献类型:
--
作者:
Rambout X;Maquat LE

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真核细胞在细胞核和细胞质之间划分了基因表达的步骤。蛋白质编码基因在细胞核中产生mrna, mrna转运到细胞质中产生蛋白质。帽结合蛋白(CBP)20及其结合伙伴CBP80被认为构成了由所有mrna前体共转录获得的帽结合复合体(CBC)。然而,这一原则最近受到核帽结合蛋白3 (NCBP3)研究的挑战。在这里,我们提出了NCBP3如何作为CBP20的替代品,作为标准CBP20 - cbp80 CBC的附件,和/或rna结合蛋白-可能与外显子连接复合体(EJC)相关-扩大细胞调节基因表达的能力。
Eukaryotic cells have divided the steps of gene expression between their nucleus and cytoplasm. Protein-encoding genes generate mRNAs in the nucleus and mRNAs undergo transport to the cytoplasm for the purpose of producing proteins. Cap-binding protein (CBP)20 and its binding partner CBP80 have been thought to constitute the cap-binding complex (CBC) that is acquired co-transcriptionally by the precursors of all mRNAs. However, this principle has recently been challenged by studies of nuclear cap-binding protein 3 (NCBP3). Here we submit how NCBP3, as an alternative to CBP20, an accessory to the canonical CBP20–CBP80 CBC, and/or an RNA-binding protein – possibly in association with the exon-junction complex (EJC) – expands the capacity of cells to regulate gene expression.
Cullin E3连接酶支架蛋白Cul4a和Cul4b的独特和重叠功能。
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