5UTG

Red abalone lysin F104A

5UTG の概要

• エントリーDOI: 10.2210/pdb5utg/pdb
• NMR情報: BMRB: 30246
• 分子名称: Egg-lysin (1 entity in total)
• 機能のキーワード: fertilization protein, cell adhesion
• 由来する生物種: Haliotis rufescens (California red abalone)
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 16089.94

構造登録者

Wilburn, D.B.,Tuttle, L.M. (登録日: 2017-02-14, 公開日: 2018-01-31, 最終更新日: 2024-05-01)

主引用文献

Wilburn, D.B.,Tuttle, L.M.,Klevit, R.E.,Swanson, W.J.
Solution structure of sperm lysin yields novel insights into molecular dynamics of rapid protein evolution.
Proc. Natl. Acad. Sci. U.S.A., 115:1310-1315, 2018

PubMed Abstract: Protein evolution is driven by the sum of different physiochemical and genetic processes that usually results in strong purifying selection to maintain biochemical functions. However, proteins that are part of systems under arms race dynamics often evolve at unparalleled rates that can produce atypical biochemical properties. In the marine mollusk abalone, lysin and vitelline envelope receptor for lysin (VERL) are a pair of rapidly coevolving proteins that are essential for species-specific interactions between sperm and egg. Despite extensive biochemical characterization of lysin-including crystal structures of multiple orthologs-it was unclear how sites under positive selection may facilitate recognition of VERL. Using a combination of targeted mutagenesis and multidimensional NMR, we present a high-definition solution structure of sperm lysin from red abalone (). Unapparent from the crystallography data, multiple NMR-based analyses conducted in solution reveal clustering of the N and C termini to form a nexus of 13 positively selected sites that constitute a VERL binding interface. Evolutionary rate was found to be a significant predictor of backbone flexibility, which may be critical for lysin bioactivity and/or accelerated evolution. Flexible, rapidly evolving segments that constitute the VERL binding interface were also the most distorted regions of the crystal structure relative to what was observed in solution. While lysin has been the subject of extensive biochemical and evolutionary analyses for more than 30 years, this study highlights the enhanced insights gained from applying NMR approaches to rapidly evolving proteins.

PubMed: 29348201
DOI: 10.1073/pnas.1709061115

実験手法

SOLUTION NMR