6FXF

Crystal structure of the SAM domain of murine SLy1

6FXF の概要

• エントリーDOI: 10.2210/pdb6fxf/pdb
• 分子名称: SAM and SH3 domain-containing protein 3 (2 entities in total)
• 機能のキーワード: sly1, sam, adapter protein, scaffold protein, signaling protein
• 由来する生物種: Mus musculus (House Mouse)
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 7564.54

構造登録者

Kukuk, L.K.,Granzin, J.,Batra-Safferling, R.,Koenig, B.W. (登録日: 2018-03-09, 公開日: 2019-01-30, 最終更新日: 2024-01-17)

主引用文献

Kukuk, L.,Dingley, A.J.,Granzin, J.,Nagel-Steger, L.,Thiagarajan-Rosenkranz, P.,Ciupka, D.,Hanel, K.,Batra-Safferling, R.,Pacheco, V.,Stoldt, M.,Pfeffer, K.,Beer-Hammer, S.,Willbold, D.,Koenig, B.W.
Structure of the SLy1 SAM homodimer reveals a new interface for SAM domain self-association.
Sci Rep, 9:54-54, 2019

PubMed Abstract: Sterile alpha motif (SAM) domains are protein interaction modules that are involved in a diverse range of biological functions such as transcriptional and translational regulation, cellular signalling, and regulation of developmental processes. SH3 domain-containing protein expressed in lymphocytes 1 (SLy1) is involved in immune regulation and contains a SAM domain of unknown function. In this report, the structure of the SLy1 SAM domain was solved and revealed that this SAM domain forms a symmetric homodimer through a novel interface. The interface consists primarily of the two long C-terminal helices, α5 and α5', of the domains packing against each other. The dimerization is characterized by a dissociation constant in the lower micromolar range. A SLy1 SAM domain construct with an extended N-terminus containing five additional amino acids of the SLy1 sequence further increases the stability of the homodimer, making the SLy1 SAM dimer two orders of magnitude more stable than previously studied SAM homodimers, suggesting that the SLy1 SAM dimerization is of functional significance. The SLy1 SAM homodimer contains an exposed mid-loop surface on each monomer, which may provide a scaffold for mediating interactions with other SAM domain-containing proteins via a typical mid-loop-end-helix interface.

PubMed: 30631134
DOI: 10.1038/s41598-018-37185-3

実験手法

X-RAY DIFFRACTION (2.05 Å)