Results 41 to 50 of about 13,335 (199)

U2 snRNA structure is influenced by SF3A and SF3B proteins but not by SF3B inhibitors.

PLoS ONE, 2021
U2 snRNP is an essential component of the spliceosome. It is responsible for branch point recognition in the spliceosome A-complex via base-pairing of U2 snRNA with an intron to form the branch helix.
Veronica K Urabe, Meredith Stevers, Arun K Ghosh, Melissa S Jurica   +3 more
doaj   +1 more source

Phylogenetic Comparison and Splicing Analysis of the U1 snRNP-specific Protein U1C in Eukaryotes

Frontiers in Molecular Biosciences, 2021
As a pivotal regulator of 5’ splice site recognition, U1 small nuclear ribonucleoprotein (U1 snRNP)-specific protein C (U1C) regulates pre-mRNA splicing by interacting with other components of the U1 snRNP complex.
Kai-Lu Zhang, Kai-Lu Zhang, Kai-Lu Zhang, Jian-Li Zhou, Jing-Fang Yang, Yu-Zhen Zhao, Debatosh Das, Ge-Fei Hao, Caie Wu, Jianhua Zhang, Fu-Yuan Zhu, Mo-Xian Chen, Shao-Ming Zhou   +12 more
doaj   +1 more source

Crystal structure of human U1 snRNP, a small nuclear ribonucleoprotein particle, reveals the mechanism of 5′ splice site recognition

eLife, 2015
U1 snRNP binds to the 5′ exon-intron junction of pre-mRNA and thus plays a crucial role at an early stage of pre-mRNA splicing. We present two crystal structures of engineered U1 sub-structures, which together reveal at atomic resolution an almost ...
Yasushi Kondo, Chris Oubridge, Anne-Marie M van Roon, Kiyoshi Nagai   +3 more
doaj   +1 more source

Cellular bases of the RNA metabolism dysfunction in motor neurons of a murine model of spinal muscular atrophy: Role of Cajal bodies and the nucleolus [PDF]

, 2017
Spinal muscular atrophy (SMA) is caused by a homozygous deletion or mutation in the survival motor neuron 1 (SMN1) gene that leads to reduced levels of SMN protein resulting in degeneration of motor neurons (MNs).
Berciano, Maria T., Calderó i Pardo, Jordi, Lafarga, Miguel, Narcís, Oriol J., Piedrafita Llorens, Lídia, Riancho, Javier, Tapia, Olga, Tarabal Mostazo, Olga   +7 more
core   +2 more sources

Single molecule analysis reveals reversible and irreversible steps during spliceosome activation

eLife, 2016
The spliceosome is a complex machine composed of small nuclear ribonucleoproteins (snRNPs) and accessory proteins that excises introns from pre-mRNAs.
Aaron A Hoskins, Margaret L Rodgers, Larry J Friedman, Jeff Gelles, Melissa J Moore   +4 more
doaj   +1 more source

Functional mammalian spliceosomal complex E contains SMN complex proteins in addition to U1 and U2 snRNPs [PDF]

, 2011
Copyright @ 2011 The Authors. This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0), which permits unrestricted non-commercial use ...
Abovich, Andrew Bottrill, Baccon, Batsche, Bedford, Behrens, Behzadnia, Behzadnia, Black, Brow, Campion, Charroux, Charroux, Das, Deckert, Dignam, Donmez, Donmez, Ester, Evgeny M. Makarov, Gozani, Gubitz, Hall, Hartmuth, Hernandez, Ishihama, Jurica, Kao, Kent, Kofler, Konarska, Kuhn, Lin, Luhrmann, Makarova, Makarova, Meister, Michaud, Michaud, Mourelatos, Neubauer, Nicholas Owen, Olga V. Makarova, Otter, Pellizzoni, Pellizzoni, Perkins, Rappsilber, Sharma, Sharma, Stark, Tanackovic, Wahl, Will, Will, Wolf, Wu, Wu, Xu, Young, Yu, Zhang, Zhou, Zillmann   +63 more
core   +2 more sources

Dual Targeting of Mutant p53 and SNRPD2 via Engineered Exosomes Modulates Alternative Splicing to Suppress Ovarian Cancer

Advanced Science, EarlyView.
Mutant p53 drives oncogenic splicing to promote the progression of ovarian cancer by partnering with the spliceosome factor SNRPD2. Therefore, it is engineered iRGD‐exosomes to co‐deliver siRNAs against both targets. This approach restored tumor‐suppressive mRNA isoforms, effectively enhanced sensitivity to cisplatin, and ultimately blocked tumor ...
Wei Zhao, Qian Hao, Yu Gan, Jing Tong, Xiaodan Chen, Shuran Tan, Ruiwen Ruan, Yingdan Huang, Mingming Cao, Jun Deng, Tao Han, Getao Shi, Bo Gao, Yu Zhang, Xiang Zhou   +14 more
wiley   +1 more source

A sequential binding mechanism for 5′ splice site recognition and modulation for the human U1 snRNP

Nature Communications
Splice site recognition is essential for defining the transcriptome. Drugs like risdiplam and branaplam change how human U1 snRNP recognizes particular 5′ splice sites (5′SS) and promote U1 snRNP binding and splicing at these locations.
David S. White, Bryan M. Dunyak, Frédéric H. Vaillancourt, Aaron A. Hoskins   +3 more
doaj   +1 more source

RNA elements directing in vivo assembly of the 7SK/MePCE/Larp7 transcriptional regulatory snRNP [PDF]

, 2013
Through controlling the nuclear level of active positive transcription elongation factor b (P-TEFb), the 7SK small nuclear RNA (snRNA) functions as a key regulator of RNA polymerase II transcription.
Bayfield, Bhattacharya, Biewenga, Blazek, Chambers, Cheng, de Almeida, Diribarne, Egloff, Goodall, Gupta, Gupta, Jeronimo, Jobert, Kiss, Kiss, Kiss, L. Muniz, Markert, Michels, Muniz, Nguyen, O'Keeffe, Peterlin, Price, S. Egloff, Shimba, Shimba, Shumyatsky, Shumyatsky, Singh, Singh, Singh, T. Kiss, Takahasi, Van Herreweghe, Wada, Wassarman, Yamaguchi, Yang, Yik, Yik, Zhou, Zhou   +43 more
core   +3 more sources

Prenatal Evaluation of RNU4‐2 Variants in Fetuses With Central Nervous System Anomalies

American Journal of Medical Genetics Part C: Seminars in Medical Genetics, EarlyView.
ABSTRACT Fetal central nervous system (CNS) anomalies are among the most common congenital malformations, yet the overall prenatal diagnostic yield of current genetic testing remains below 40%. Variants in RNU4‐2, a non‐coding gene encoding the U4 small nuclear RNA (snRNA), have recently been linked to a novel highly recurrent dominant ...
Yiyao Chen, Li Gao, Xu Han, Yunyun Cao, Lanlan Zhang, Yi Wu, Xinrong Zhao, Wenjing Hu, Ruiyu Ma, Renyi Hua, Niu Li, Yanlin Wang, Jian Wang, Shuyuan Li   +13 more
wiley   +1 more source