4ONK

[Leu-5]-Enkephalin mutant - YVVFL

4ONK の概要

• エントリーDOI: 10.2210/pdb4onk/pdb
• 関連するPDBエントリー: 4OLR
• 分子名称: [Leu-5]-Enkephalin mutant - YVVFL (2 entities in total)
• 機能のキーワード: amyloid-like protofibril, protein fibril
• 由来する生物種: synthetic construct
• タンパク質・核酸の鎖数: 2
• 化学式量合計: 1279.56

構造登録者

Sangwan, S.,Eisenberg, D.,Sawaya, M.R.,Do, T.D.,Bowers, M.T.,Lapointe, N.E.,Teplow, D.B.,Feinstein, S.C. (登録日: 2014-01-28, 公開日: 2014-07-02, 最終更新日: 2024-04-03)

主引用文献

Do, T.D.,LaPointe, N.E.,Sangwan, S.,Teplow, D.B.,Feinstein, S.C.,Sawaya, M.R.,Eisenberg, D.S.,Bowers, M.T.
Factors that drive Peptide assembly from native to amyloid structures: experimental and theoretical analysis of [leu-5]-enkephalin mutants.
J.Phys.Chem.B, 118:7247-7256, 2014

PubMed Abstract: Five different mutants of [Leu-5] Enkephalin YGGFL peptide have been investigated for fibril formation propensities. The early oligomer structures have been probed with a combination of ion-mobility mass spectrometry and computational modeling. The two peptides YVIFL and YVVFL form oligomers and amyloid-like fibrils. YVVFV shows an early stage oligomer distribution similar to those of the previous two, but amyloid-like aggregates are less abundant. Atomic resolution X-ray structures of YVVFV show two different modes of interactions at the dry interface between steric zippers and pairs of antiparallel β-sheets, but both are less favorable than the packing motif found in YVVFL. Both YVVFV and YVVFL can form a Class 6 steric zipper. However, in YVVFV, the strands between mating sheets are parallel to each other and in YVVFL they are antiparallel. The overall data highlight the importance of structurally characterizing high order oligomers within oligomerization pathways in studies of nanostructure assembly.

PubMed: 24915112
DOI: 10.1021/jp502473s

実験手法

X-RAY DIFFRACTION (1.9 Å)