7YPC

Notothenia coriiceps TRAF4

7YPC の概要

• エントリーDOI: 10.2210/pdb7ypc/pdb
• 分子名称: TNF receptor-associated factor (1 entity in total)
• 機能のキーワード: traf, tumor necrosis factor receptor association factor, notothenia coriiceps traf4, protein binding, immune system
• 由来する生物種: Notothenia coriiceps (black rockcod)
• タンパク質・核酸の鎖数: 3
• 化学式量合計: 66437.95

構造登録者

Park, H.H.,Kim, C.M.,Jang, H.S. (登録日: 2022-08-03, 公開日: 2023-07-12, 最終更新日: 2023-11-29)

主引用文献

Kim, C.M.,Jang, H.,Hong, E.,Lee, J.H.,Park, H.H.
Structure of fish TRAF4 and its implication in TRAF4-mediated immune cell and platelet signaling.
Fish Shellfish Immunol., 132:108462-108462, 2023

PubMed Abstract: Due to an increasing interest in immunity and signal transduction in teleost fish, important key signaling molecules associated with the immune response, including TRAF molecules, have been recently cloned and characterized. To better understand the role of TRAF4 in fish immune signaling and compare it with the human system, our study cloned the TRAF4 gene from the Antarctic yellowbelly rockcod Notothenia coriiceps (ncTRAF4) and purified the protein. Here, we report the first crystal structure of teleost fish TRAF4. Based on biochemical characterization, our findings elucidated the mechanisms through which signaling molecules gain cold adaptivity. Additionally, we identified a platelet receptor GPIbβ homolog in N. coriiceps (ncGPIbβ) and found that the "RRFERLFKEARRTS" region of this homolog directly binds to ncTRAF4, indicating that ncTRAF4 also recognizes the "RLXA" motif for receptor interactions and further TARF4-mediated cellular signaling. Collectively, our findings provide novel insights into the mechanisms of TRAF4-mediated immune cell and platelet signaling in fish and the structural flexibility-mediated cold adaptiveness of signaling molecules.

PubMed: 36455779
DOI: 10.1016/j.fsi.2022.108462

実験手法

X-RAY DIFFRACTION (2.66 Å)