2GVM

Crystal structure of hydrophobin HFBI with detergent

2GVM の概要

• エントリーDOI: 10.2210/pdb2gvm/pdb
• 関連するPDBエントリー: 1R2M 2B97 2FZ6
• 分子名称: Hydrophobin-1, ZINC ION, LAURYL DIMETHYLAMINE-N-OXIDE, ... (4 entities in total)
• 機能のキーワード: hydrophobin, amphiphile, surfactant, high solvent content, surface active protein
• 由来する生物種: Hypocrea jecorina
• 細胞内の位置: Secreted, cell wall: P52754
• タンパク質・核酸の鎖数: 4
• 化学式量合計: 32599.31

構造登録者

Hakanpaa, J.M.,Rouvinen, J. (登録日: 2006-05-03, 公開日: 2006-08-15, 最終更新日: 2024-10-30)

主引用文献

Hakanpaa, J.M.,Szilvay, G.R.,Kaljunen, H.,Maksimainen, M.,Linder, M.,Rouvinen, J.
Two crystal structures of Trichoderma reesei hydrophobin HFBI--The structure of a protein amphiphile with and without detergent interaction.
Protein Sci., 15:2129-2140, 2006

PubMed Abstract: Hydrophobins are small fungal proteins that are highly surface active and possess a unique ability to form amphiphilic membranes through spontaneous self-assembly. The first crystal structure of a hydrophobin, Trichoderma reesei HFBII, revealed the structural basis for the function of this amphiphilic protein--a patch consisting of hydrophobic side chains on the protein surface. Here, the crystal structures of a native and a variant T. reesei hydrophobin HFBI are presented, revealing the same overall structure and functional hydrophobic patch as in the HFBII structure. However, some structural flexibility was found in the native HFBI structure: The asymmetric unit contained four molecules, and, in two of these, an area of seven residues was displaced as compared to the two other HFBI molecules and the previously determined HFBII structure. This structural change is most probably induced by multimer formation. Both the native and the N-Cys-variant of HFBI were crystallized in the presence of detergents, but an association between the protein and a detergent was only detected in the variant structure. There, the molecules were arranged into an extraordinary detergent-associated octamer and the solvent content of the crystals was 75%. This study highlights the conservation of the fold of class II hydrophobins in spite of the low sequence identity and supports our previous suggestion that concealment of the hydrophobic surface areas of the protein is the driving force in the formation of multimers and monolayers in the self-assembly process.

PubMed: 16882996
DOI: 10.1110/ps.062326706

実験手法

X-RAY DIFFRACTION (2.3 Å)