» Articles » PMID: 20308327

A Glycine-rich Domain of HnRNP H/F Promotes Nucleocytoplasmic Shuttling and Nuclear Import Through an Interaction with Transportin 1

Overview
Journal Mol Cell Biol
Specialty Cell Biology
Date 2010 Mar 24
PMID 20308327
Citations 34
Authors
Affiliations
Soon will be listed here.
Abstract

Heterogeneous nuclear ribonucleoprotein (hnRNP) H and F are members of a closely related subfamily of hnRNP proteins that are implicated in many aspects of RNA processing. hnRNP H and F are alternative splicing factors for numerous U2- and U12-dependent introns. The proteins have three RNA binding domains and two glycine-rich domains and localize to both the nucleus and cytoplasm, but little is known about which domains govern subcellular localization or splicing activity. We show here that the central glycine-tyrosine-arginine-rich (GYR) domain is responsible for nuclear localization, and a nonclassical nuclear localization signal (NLS) was mapped to a short, highly conserved sequence whose activity was compromised by point mutations. Glutathione S-transferase (GST) pulldown assays demonstrated that the hnRNP H NLS interacts with the import receptor transportin 1. Finally, we show that hnRNP H/F are transcription-dependent shuttling proteins. Collectively, the results suggest that hnRNP H and F are GYR domain-dependent shuttling proteins whose posttranslational modifications may alter nuclear localization and hence function.

Citing Articles

hnRNP H controls alternative splicing of human papillomavirus type 16 E1, E6, E7, and E6^E7 mRNAs via GGG motifs.

Jonsson J, Zhai Q, Schwartz S, Kajitani N J Virol. 2024; 98(10):e0095124.

PMID: 39287390 PMC: 11494879. DOI: 10.1128/jvi.00951-24.


The hnRNP A2B1 is important for the replication of SFTSV and other RNA viruses.

Zhang X, Yan L, Liu B, Zhou C, Yu X Microbiol Spectr. 2024; 12(10):e0082924.

PMID: 39166862 PMC: 11448443. DOI: 10.1128/spectrum.00829-24.


hnRNPH1 maintains mitochondrial homeostasis by establishing NRF1/DRP1 retrograde signaling under mitochondrial stress.

Zhao L, Zou X, Deng J, Sun B, Li Y, Zhao L Cell Death Differ. 2024; 32(1):118-133.

PMID: 38898233 PMC: 11742414. DOI: 10.1038/s41418-024-01331-4.


circGlis3 promotes β-cell dysfunction by binding to heterogeneous nuclear ribonucleoprotein F and encoding Glis3-348aa protein.

Xiong L, Gong Y, Liu H, Huang L, Zeng Z, Zheng X iScience. 2024; 27(1):108680.

PMID: 38226164 PMC: 10788204. DOI: 10.1016/j.isci.2023.108680.


Research Progress on the Structural and Functional Roles of hnRNPs in Muscle Development.

Li Z, Wei H, Hu D, Li X, Guo Y, Ding X Biomolecules. 2023; 13(10).

PMID: 37892116 PMC: 10604023. DOI: 10.3390/biom13101434.


References
1.
Siomi H, Dreyfuss G . A nuclear localization domain in the hnRNP A1 protein. J Cell Biol. 1995; 129(3):551-60. PMC: 2120450. DOI: 10.1083/jcb.129.3.551. View

2.
McNally L, Yee L, McNally M . Heterogeneous nuclear ribonucleoprotein H is required for optimal U11 small nuclear ribonucleoprotein binding to a retroviral RNA-processing control element: implications for U12-dependent RNA splicing. J Biol Chem. 2005; 281(5):2478-88. DOI: 10.1074/jbc.M511215200. View

3.
Matunis M, Xing J, Dreyfuss G . The hnRNP F protein: unique primary structure, nucleic acid-binding properties, and subcellular localization. Nucleic Acids Res. 1994; 22(6):1059-67. PMC: 307930. DOI: 10.1093/nar/22.6.1059. View

4.
Nasim F, Hutchison S, Cordeau M, Chabot B . High-affinity hnRNP A1 binding sites and duplex-forming inverted repeats have similar effects on 5' splice site selection in support of a common looping out and repression mechanism. RNA. 2002; 8(8):1078-89. PMC: 1370318. DOI: 10.1017/s1355838202024056. View

5.
Fischer U, Huber J, Boelens W, Mattaj I, Luhrmann R . The HIV-1 Rev activation domain is a nuclear export signal that accesses an export pathway used by specific cellular RNAs. Cell. 1995; 82(3):475-83. DOI: 10.1016/0092-8674(95)90436-0. View