4WXU

Crystal Structure of the Selenomthionine Incorporated Myocilin Olfactomedin Domain E396D Variant.

4WXU の概要

• エントリーDOI: 10.2210/pdb4wxu/pdb
• 関連するPDBエントリー: 4WXQ 4WXS
• 分子名称: Myocilin, CALCIUM ION, HEXAETHYLENE GLYCOL, ... (6 entities in total)
• 機能のキーワード: beta propeller, 5 bladed propeller, olfactomedin, protein binding
• 由来する生物種: Homo sapiens (Human)
• 細胞内の位置: Secreted. Myocilin, C-terminal fragment: Secreted. Myocilin, N-terminal fragment: Endoplasmic reticulum: Q99972
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 32511.68

構造登録者

Donegan, R.K.,Freeman, D.M.,Lieberman, R.L. (登録日: 2014-11-14, 公開日: 2015-04-01, 最終更新日: 2024-10-23)

主引用文献

Donegan, R.K.,Hill, S.E.,Freeman, D.M.,Nguyen, E.,Orwig, S.D.,Turnage, K.C.,Lieberman, R.L.
Structural basis for misfolding in myocilin-associated glaucoma.
Hum.Mol.Genet., 24:2111-2124, 2015

PubMed Abstract: Olfactomedin (OLF) domain-containing proteins play roles in fundamental cellular processes and have been implicated in disorders ranging from glaucoma, cancers and inflammatory bowel disorder, to attention deficit disorder and childhood obesity. We solved crystal structures of the OLF domain of myocilin (myoc-OLF), the best studied such domain to date. Mutations in myoc-OLF are causative in the autosomal dominant inherited form of the prevalent ocular disorder glaucoma. The structures reveal a new addition to the small family of five-bladed β-propellers. Propellers are most well known for their ability to act as hubs for protein-protein interactions, a function that seems most likely for myoc-OLF, but they can also act as enzymes. A calcium ion, sodium ion and glycerol molecule were identified within a central hydrophilic cavity that is accessible via movements of surface loop residues. By mapping familial glaucoma-associated lesions onto the myoc-OLF structure, three regions sensitive to aggregation have been identified, with direct applicability to differentiating between neutral and disease-causing non-synonymous mutations documented in the human population worldwide. Evolutionary analysis mapped onto the myoc-OLF structure reveals conserved and divergent regions for possible overlapping and distinctive functional protein-protein or protein-ligand interactions across the broader OLF domain family. While deciphering the specific normal biological functions, ligands and binding partners for OLF domains will likely continue to be a challenging long-term experimental pursuit, atomic detail structural knowledge of myoc-OLF is a valuable guide for understanding the implications of glaucoma-associated mutations and will help focus future studies of this biomedically important domain family.

PubMed: 25524706
DOI: 10.1093/hmg/ddu730

実験手法

X-RAY DIFFRACTION (2.092 Å)