2I9Y

Solution structure of Arabidopsis thaliana protein At1g70830, a member of the major latex protein family

2I9Y の概要

• エントリーDOI: 10.2210/pdb2i9y/pdb
• NMR情報: BMRB: 7339
• 分子名称: major latex protein-like protein 28 or MLP-like protein 28 (1 entity in total)
• 機能のキーワード: at1g70830, bet v1-like, structural genomics, protein structure initiative, psi, center for eukaryotic structural genomics, cesg, unknown function
• 由来する生物種: Arabidopsis thaliana (thale cress)
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 18681.98

構造登録者

Volkman, B.F.,de la Cruz, N.B.,Lytle, B.L.,Peterson, F.C.,Center for Eukaryotic Structural Genomics (CESG) (登録日: 2006-09-06, 公開日: 2006-09-19, 最終更新日: 2024-05-29)

主引用文献

Lytle, B.L.,Song, J.,de la Cruz, N.B.,Peterson, F.C.,Johnson, K.A.,Bingman, C.A.,Phillips, G.N.,Volkman, B.F.
Structures of two Arabidopsis thaliana major latex proteins represent novel helix-grip folds.
Proteins, 76:237-243, 2009

PubMed Abstract: The major latex proteins (MLP) are a protein family first identified in the latex of opium poppy. They are found only in plants and have 24 identified members in alone as well as in other plants such as peach, strawberry, melon, cucumber, and soybean. While the function of the MLPs is unknown, they have been associated with fruit and flower development and in pathogen defense responses. Based on modest sequence similarity, they have been characterized as members of the Bet v 1 protein superfamily; however, no structures have yet been reported. As part of an ongoing structural genomics effort, we determined the structures of two MLPs: the solution structure of MLP28 (gene product of At1g70830.1) and the crystal structure of At1g24000.1. The structures revealed distinct differences when compared to one another and to the typical Bet v 1 fold. Nevertheless, NMR titration experiments demonstrated that the characteristic Bet v 1 hydrophobic binding pocket of At1g24000.1 is able to bind a ligand, suggesting that it plays a role in the function of the MLPs. A structure-based sequence analysis identified conserved hydrophobic residues in the long alpha helix that contribute to the binding cavity and may specify preferred ligands for the MLP family.

PubMed: 19326460
DOI: 10.1002/prot.22396

実験手法

SOLUTION NMR