7W9A

Dynamics of lipid displacement inside the hydrophobic cavity of a non-specific lipid transfer protein from Solanum melongena

7W9A の概要

• エントリーDOI: 10.2210/pdb7w9a/pdb
• 関連するPDBエントリー: 6IWP
• 分子名称: Non-specific lipid-transfer protein, LAURIC ACID (3 entities in total)
• 機能のキーワード: nsltp, lauric acid, lipid transfer protein, lipid binding dynamics, lipid transport
• 由来する生物種: Solanum melongena (eggplant)
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 9805.25

構造登録者

Madni, Z.K.,Kumar, A.,Salunke, D.M. (登録日: 2021-12-09, 公開日: 2022-07-13, 最終更新日: 2024-11-06)

主引用文献

Madni, Z.K.,Kumar, A.,Kumar, U.,Jaiswal, D.,Salunke, D.M.
Dynamics of lipid displacement inside the hydrophobic cavity of a nonspecific lipid transfer protein from Solanum melongena .
J.Biomol.Struct.Dyn., 41:5839-5849, 2023

PubMed Abstract: Nonspecific lipid transfer proteins are multifunctional and multispecific seed proteins with a characteristic hydrophobic cavity that runs form N-terminal to the C-terminal end. They are capable of binding and transferring different lipid molecules by means of their hydrophobic cavity. Apart from the cavity, lipid molecules bind and interact at key positions on the nsLTP surface as well. The plasticity of the hydrophobic cavity is an unusual property, considered as the primary lipid binding site. Here, we report a crystal structure of nsLTP from with two lauric acid molecules bound inside the cavity. It has been observed that the extent of the N-terminal entry point and plasticity of the cavity can be extended, upon binding of one or two lipid molecules inside the cavity. The MD simulation further revealed that the lipid molecule shows high mobility inside the cavity and interestingly, was able to change its orientation. An alternate lipid entry site adjacent to the N-terminal end was uncovered during simulation and Arg-84 was implicated to be a potential regulatory residue aside from Tyr-59. Collectively, this study helps to understand that changes in orientation of the lipid inside the cavity could occur intermittently besides entering the cavity via tail-in-mechanism.Communicated by Ramaswamy H. Sarma.

PubMed: 35838149
DOI: 10.1080/07391102.2022.2097956

実験手法

X-RAY DIFFRACTION (2.12 Å)