7BO8

A hexameric de novo coiled-coil assembly: CC-Type2-(VaYd)4-Y3F-W19(BrPhe)-Y24F.

7BO8 の概要

• エントリーDOI: 10.2210/pdb7bo8/pdb
• 分子名称: CC-Type2-(VaYd)4-Y3F-W19(BrPhe)-Y24F, OXAMIC ACID, 1,2-ETHANEDIOL, ... (4 entities in total)
• 機能のキーワード: coiled coil, synthetic peptide, homomeric assembly, tyrosine-tyrosine interactions, de novo protein
• 由来する生物種: synthetic construct
• タンパク質・核酸の鎖数: 6
• 化学式量合計: 20471.24

構造登録者

Rhys, G.G.,Brady, R.L.,Woolfson, D.N. (登録日: 2021-01-24, 公開日: 2021-05-19)

主引用文献

Rhys, G.G.,Dawson, W.M.,Beesley, J.L.,Martin, F.J.O.,Brady, R.L.,Thomson, A.R.,Woolfson, D.N.
How Coiled-Coil Assemblies Accommodate Multiple Aromatic Residues.
Biomacromolecules, 22:2010-2019, 2021

PubMed Abstract: Rational protein design requires understanding the contribution of each amino acid to a targeted protein fold. For a subset of protein structures, namely, α-helical coiled coils (CCs), knowledge is sufficiently advanced to allow the rational design of many structures, including entirely new protein folds. Current CC design rules center on using aliphatic hydrophobic residues predominantly to drive the folding and assembly of amphipathic α helices. The consequences of using aromatic residues-which would be useful for introducing structural probes, and binding and catalytic functionalities-into these interfaces are not understood. There are specific examples of designed CCs containing such aromatic residues, ., phenylalanine-rich sequences, and the use of polar aromatic residues to make buried hydrogen-bond networks. However, it is not known generally if sequences rich in tyrosine can form CCs, or what CC assemblies these would lead to. Here, we explore tyrosine-rich sequences in a general CC-forming background and resolve new CC structures. In one of these, an antiparallel tetramer, the tyrosine residues are solvent accessible and pack at the interface between the core and the surface. In another more complex structure, the residues are buried and form an extended hydrogen-bond network.

PubMed: 33881308
DOI: 10.1021/acs.biomac.1c00131

実験手法

X-RAY DIFFRACTION (1.84 Å)