6FBL

NMR Solution Structure of MINA-1(254-334)

6FBL の概要

• エントリーDOI: 10.2210/pdb6fbl/pdb
• NMR情報: BMRB: 34220
• 分子名称: MINA-1 (1 entity in total)
• 機能のキーワード: k homology (kh) domain, type-i kh domain, rna recognition, rna binding protein, gxxg loop, antiparallel three-stranded beta-sheet
• 由来する生物種: Caenorhabditis elegans
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 9634.08

構造登録者

Michel, E.,Allain, F. (登録日: 2017-12-19, 公開日: 2019-01-30, 最終更新日: 2024-06-19)

主引用文献

Sendoel, A.,Subasic, D.,Ducoli, L.,Keller, M.,Michel, E.,Kohler, I.,Singh, K.D.,Zheng, X.,Brummer, A.,Imig, J.,Kishore, S.,Wu, Y.,Kanitz, A.,Kaech, A.,Mittal, N.,Matia-Gonzalez, A.M.,Gerber, A.P.,Zavolan, M.,Aebersold, R.,Hall, J.,Allain, F.H.,Hengartner, M.O.
MINA-1 and WAGO-4 are part of regulatory network coordinating germ cell death and RNAi in C. elegans.
Cell Death Differ., 26:2157-2178, 2019

PubMed Abstract: Post-transcriptional control of mRNAs by RNA-binding proteins (RBPs) has a prominent role in the regulation of gene expression. RBPs interact with mRNAs to control their biogenesis, splicing, transport, localization, translation, and stability. Defects in such regulation can lead to a wide range of human diseases from neurological disorders to cancer. Many RBPs are conserved between Caenorhabditis elegans and humans, and several are known to regulate apoptosis in the adult C. elegans germ line. How these RBPs control apoptosis is, however, largely unknown. Here, we identify mina-1(C41G7.3) in a RNA interference-based screen as a novel regulator of apoptosis, which is exclusively expressed in the adult germ line. The absence of MINA-1 causes a dramatic increase in germ cell apoptosis, a reduction in brood size, and an impaired P granules organization and structure. In vivo crosslinking immunoprecipitation experiments revealed that MINA-1 binds a set of mRNAs coding for RBPs associated with germ cell development. Additionally, a system-wide analysis of a mina-1 deletion mutant compared with wild type, including quantitative proteome and transcriptome data, hints to a post-transcriptional regulatory RBP network driven by MINA-1 during germ cell development in C. elegans. In particular, we found that the germline-specific Argonaute WAGO-4 protein levels are increased in mina-1 mutant background. Phenotypic analysis of double mutant mina-1;wago-4 revealed that contemporary loss of MINA-1 and WAGO-4 strongly rescues the phenotypes observed in mina-1 mutant background. To strengthen this functional interaction, we found that upregulation of WAGO-4 in mina-1 mutant animals causes hypersensitivity to exogenous RNAi. Our comprehensive experimental approach allowed us to describe a phenocritical interaction between two RBPs controlling germ cell apoptosis and exogenous RNAi. These findings broaden our understanding of how RBPs can orchestrate different cellular events such as differentiation and death in C. elegans.

PubMed: 30728462
DOI: 10.1038/s41418-019-0291-z

実験手法

SOLUTION NMR