4NDV

Crystal structure of L. decastes alpha-galactosyl-binding lectin in complex with globotriose

4NDV の概要

• エントリーDOI: 10.2210/pdb4ndv/pdb
• 関連するPDBエントリー: 4NDS 4NDT 4NDU
• 分子名称: Alpha-galactosyl-binding lectin, alpha-D-galactopyranose-(1-4)-beta-D-galactopyranose-(1-4)-beta-D-glucopyranose (3 entities in total)
• 機能のキーワード: lectin, sugar binding protein
• 由来する生物種: Lyophyllum decastes (Fried chicken mushroom)
• タンパク質・核酸の鎖数: 2
• 化学式量合計: 21087.20

構造登録者

Van Eerde, A.,Grahn, E.,Krengel, U. (登録日: 2013-10-27, 公開日: 2014-12-10, 最終更新日: 2024-11-20)

主引用文献

van Eerde, A.,Grahn, E.M.,Winter, H.C.,Goldstein, I.J.,Krengel, U.
Atomic-resolution structure of the alpha-galactosyl binding Lyophyllum decastes lectin reveals a new protein family found in both fungi and plants.
Glycobiology, 25:492-501, 2015

PubMed Abstract: The crystal structure of the α-galactosyl binding Lyophyllum decastes lectin (LDL) was determined to 1.0 Å resolution by sulfur single-wavelength anomalous diffraction (SAD). The 10 kDa protein exhibits no sequence similarity to any protein with known structure and adopts a unique lectin fold, where a core of two antiparallel β-sheets at the heart of the homodimer is connected to the periphery of the structure by intramolecular disulfide bridges. This fold suggests that LDL is secreted, which sets it apart from other mushroom lectins. Structures of complexes between LDL and the ligands α-methylgalactoside and globotriose shed light on the binding specificity. Sequence comparison suggests a location and function of LDL and homologous proteins in or at the fungal cell wall. Structural comparison allows the identification of a superfamily of secreted proteins with the LDL fold, which may play a role at the interface between fungi and their environment.

PubMed: 25504801
DOI: 10.1093/glycob/cwu136

実験手法

X-RAY DIFFRACTION (1.3 Å)