5APY

Sequence MATKDDIAN inserted between GCN4 adaptors - Structure T9(9)

5APY の概要

• エントリーDOI: 10.2210/pdb5apy/pdb
• 関連するPDBエントリー: 5APP 5APQ 5APS 5APT 5APU 5APV 5APW 5APX 5APZ
• 分子名称: GENERAL CONTROL PROTEIN GCN4 (2 entities in total)
• 機能のキーワード: dna binding protein, alpha/beta coiled coil, beta layer, trimer
• 由来する生物種: SACCHAROMYCES CEREVISIAE (BAKER'S YEAST)
• 細胞内の位置: Nucleus: P03069
• タンパク質・核酸の鎖数: 3
• 化学式量合計: 34104.25

構造登録者

Hartmann, M.D.,Mendler, C.T.,Lupas, A.N.,Hernandez Alvarez, B. (登録日: 2015-09-17, 公開日: 2016-01-27, 最終更新日: 2024-01-10)

主引用文献

Hartmann, M.D.,Mendler, C.T.,Bassler, J.,Karamichali, I.,Ridderbusch, O.,Lupas, A.N.,Hernandez Alvarez, B.
alpha / beta coiled coils.
Elife, 5:-, 2016

PubMed Abstract: Coiled coils are the best-understood protein fold, as their backbone structure can uniquely be described by parametric equations. This level of understanding has allowed their manipulation in unprecedented detail. They do not seem a likely source of surprises, yet we describe here the unexpected formation of a new type of fiber by the simple insertion of two or six residues into the underlying heptad repeat of a parallel, trimeric coiled coil. These insertions strain the supercoil to the breaking point, causing the local formation of short β-strands, which move the path of the chain by 120° around the trimer axis. The result is an α/β coiled coil, which retains only one backbone hydrogen bond per repeat unit from the parent coiled coil. Our results show that a substantially novel backbone structure is possible within the allowed regions of the Ramachandran space with only minor mutations to a known fold.

PubMed: 26771248
DOI: 10.7554/eLife.11861

実験手法

X-RAY DIFFRACTION (2 Å)