5KAB

Protein Tyrosine Phosphatase 1B Delta helix 7, P185G mutant in complex with TCS401, open state

5KAB の概要

• エントリーDOI: 10.2210/pdb5kab/pdb
• 関連するPDBエントリー: 5K9V 5K9W 5KA0 5KA1 5KA2 5KA3 5KA4 5KA7 5KA8 5KA9 5KAA 5KAC 5KAD
• 分子名称: Tyrosine-protein phosphatase non-receptor type 1, CHLORIDE ION, 2-(OXALYL-AMINO)-4,5,6,7-TETRAHYDRO-THIENO[2,3-C]PYRIDINE-3-CARBOXYLIC ACID, ... (6 entities in total)
• 機能のキーワード: protein tyrosine phosphatase, hydrolase
• 由来する生物種: Homo sapiens (Human)
• 細胞内の位置: Endoplasmic reticulum membrane ; Peripheral membrane protein ; Cytoplasmic side : P18031
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 34247.19

構造登録者

Choy, M.S.,Machado, L.E.S.F.,Peti, W.,Page, R. (登録日: 2016-06-01, 公開日: 2017-03-08, 最終更新日: 2023-09-27)

主引用文献

Choy, M.S.,Li, Y.,Machado, L.E.,Kunze, M.B.,Connors, C.R.,Wei, X.,Lindorff-Larsen, K.,Page, R.,Peti, W.
Conformational Rigidity and Protein Dynamics at Distinct Timescales Regulate PTP1B Activity and Allostery.
Mol. Cell, 65:644-658.e5, 2017

PubMed Abstract: Protein function originates from a cooperation of structural rigidity, dynamics at different timescales, and allostery. However, how these three pillars of protein function are integrated is still only poorly understood. Here we show how these pillars are connected in Protein Tyrosine Phosphatase 1B (PTP1B), a drug target for diabetes and cancer that catalyzes the dephosphorylation of numerous substrates in essential signaling pathways. By combining new experimental and computational data on WT-PTP1B and ≥10 PTP1B variants in multiple states, we discovered a fundamental and evolutionarily conserved CH/π switch that is critical for positioning the catalytically important WPD loop. Furthermore, our data show that PTP1B uses conformational and dynamic allostery to regulate its activity. This shows that both conformational rigidity and dynamics are essential for controlling protein activity. This connection between rigidity and dynamics at different timescales is likely a hallmark of all enzyme function.

PubMed: 28212750
DOI: 10.1016/j.molcel.2017.01.014

実験手法

X-RAY DIFFRACTION (1.968 Å)