7QRN

Crystal structure of Ovalbumin-related protein X (OVAX) complexed with fondaparinux

7QRN の概要

• エントリーDOI: 10.2210/pdb7qrn/pdb
• 関連するBIRD辞書のPRD_ID: PRD_900028
• 分子名称: Ovalbumin-related protein X, 2-deoxy-6-O-sulfo-2-(sulfoamino)-alpha-D-glucopyranose-(1-4)-beta-D-glucopyranuronic acid-(1-4)-2-deoxy-3,6-di-O-sulfo-2-(sulfoamino)-alpha-D-glucopyranose-(1-4)-2-O-sulfo-alpha-L-idopyranuronic acid-(1-4)-methyl 2-deoxy-6-O-sulfo-2-(sulfoamino)-alpha-D-glucopyranoside, SULFATE ION, ... (5 entities in total)
• 機能のキーワード: chicken egg, serpin, innate immunity, heparin binding protein, fondaparinux, antimicrobial protein
• 由来する生物種: Gallus gallus (chicken)
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 47842.34

構造登録者

Coste, F.,Bruneau, G.,Rehault-Godbert, S. (登録日: 2022-01-11, 公開日: 2022-11-30, 最終更新日: 2024-10-16)

主引用文献

Moreau, T.,Gautron, J.,Hincke, M.T.,Monget, P.,Rehault-Godbert, S.,Guyot, N.
Antimicrobial Proteins and Peptides in Avian Eggshell: Structural Diversity and Potential Roles in Biomineralization.
Front Immunol, 13:946428-946428, 2022

PubMed Abstract: The calcitic avian eggshell provides physical protection for the embryo during its development, but also regulates water and gaseous exchange, and is a calcium source for bone mineralization. The calcified eggshell has been extensively investigated in the chicken. It is characterized by an inventory of more than 900 matrix proteins. In addition to proteins involved in shell mineralization and regulation of its microstructure, the shell also contains numerous antimicrobial proteins and peptides (AMPPs) including lectin-like proteins, Bacterial Permeability Increasing/Lipopolysaccharide Binding Protein/PLUNC family proteins, defensins, antiproteases, and chelators, which contribute to the innate immune protection of the egg. In parallel, some of these proteins are thought to be crucial determinants of the eggshell texture and its resulting mechanical properties. During the progressive solubilization of the inner mineralized eggshell during embryonic development (to provide calcium to the embryo), some antimicrobials may be released simultaneously to reinforce egg defense and protect the egg from contamination by external pathogens, through a weakened eggshell. This review provides a comprehensive overview of the diversity of avian eggshell AMPPs, their three-dimensional structures and their mechanism of antimicrobial activity. The published chicken eggshell proteome databases are integrated for a comprehensive inventory of its AMPPs. Their biochemical features, potential dual function as antimicrobials and as regulators of eggshell biomineralization, and their phylogenetic evolution will be described and discussed with regard to their three-dimensional structural characteristics. Finally, the repertoire of chicken eggshell AMPPs are compared to orthologs identified in other avian and non-avian eggshells. This approach sheds light on the similarities and differences exhibited by AMPPs, depending on bird species, and leads to a better understanding of their sequential or dual role in biomineralization and innate immunity.

PubMed: 35967448
DOI: 10.3389/fimmu.2022.946428

実験手法

X-RAY DIFFRACTION (1.83 Å)