5EMO

Structure of the star domain of T-STAR in complex with AUUAAA RNA

5EMO の概要

• エントリーDOI: 10.2210/pdb5emo/pdb
• 分子名称: KH domain-containing, RNA-binding, signal transduction-associated protein 3, RNA (5'-R(P*AP*UP*UP*AP*AP*A)-3') (2 entities in total)
• 機能のキーワード: protein - rna complexes star protein alternative splicing kh domain, rna binding protein
• 由来する生物種: Homo sapiens (Human); 詳細
• 細胞内の位置: Nucleus : O75525
• タンパク質・核酸の鎖数: 4
• 化学式量合計: 46080.91

構造登録者

Dominguez, C.,Feracci, M. (登録日: 2015-11-06, 公開日: 2016-01-13, 最終更新日: 2024-01-10)

主引用文献

Feracci, M.,Foot, J.N.,Grellscheid, S.N.,Danilenko, M.,Stehle, R.,Gonchar, O.,Kang, H.S.,Dalgliesh, C.,Meyer, N.H.,Liu, Y.,Lahat, A.,Sattler, M.,Eperon, I.C.,Elliott, D.J.,Dominguez, C.
Structural basis of RNA recognition and dimerization by the STAR proteins T-STAR and Sam68.
Nat Commun, 7:10355-10355, 2016

PubMed Abstract: Sam68 and T-STAR are members of the STAR family of proteins that directly link signal transduction with post-transcriptional gene regulation. Sam68 controls the alternative splicing of many oncogenic proteins. T-STAR is a tissue-specific paralogue that regulates the alternative splicing of neuronal pre-mRNAs. STAR proteins differ from most splicing factors, in that they contain a single RNA-binding domain. Their specificity of RNA recognition is thought to arise from their property to homodimerize, but how dimerization influences their function remains unknown. Here, we establish at atomic resolution how T-STAR and Sam68 bind to RNA, revealing an unexpected mode of dimerization different from other members of the STAR family. We further demonstrate that this unique dimerization interface is crucial for their biological activity in splicing regulation, and suggest that the increased RNA affinity through dimer formation is a crucial parameter enabling these proteins to select their functional targets within the transcriptome.

PubMed: 26758068
DOI: 10.1038/ncomms10355

実験手法

X-RAY DIFFRACTION (3.03 Å)