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- W2524564089 endingPage "gkw833" @default.
- W2524564089 startingPage "gkw833" @default.
- W2524564089 abstract "The 7SK small nuclear ribonucleoprotein (snRNP) sequesters and inactivates the positive transcription elongation factor b (P-TEFb), an essential eukaryotic mRNA transcription factor. The human La-related protein group 7 (hLARP7) is a constitutive component of the 7SK snRNP and localizes to the 3' terminus of the 7SK long noncoding RNA. hLARP7, and in particular its C-terminal domain (CTD), is essential for 7SK RNA stability and assembly with P-TEFb. The hLARP7 N-terminal La module binds and protects the 3' end from degradation, but the structural and functional role of its CTD is unclear. We report the solution NMR structure of the hLARP7 CTD and show that this domain contains an xRRM, a class of atypical RRM first identified in the Tetrahymena thermophila telomerase LARP7 protein p65. The xRRM binds the 3' end of 7SK RNA at the top of stem-loop 4 (SL4) and interacts with both unpaired and base-paired nucleotides. This study confirms that the xRRM is general to the LARP7 family of proteins and defines the binding site for hLARP7 on the 7SK RNA, providing insight into function." @default.
- W2524564089 created "2016-10-07" @default.
- W2524564089 creator A5019057365 @default.
- W2524564089 creator A5019845421 @default.
- W2524564089 creator A5065309815 @default.
- W2524564089 date "2016-09-26" @default.
- W2524564089 modified "2023-10-16" @default.
- W2524564089 title "hLARP7 C-terminal domain contains an xRRM that binds the 3′ hairpin of 7SK RNA" @default.
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