4BT9

CRYSTAL STRUCTURE OF THE PEPTIDE(PRO-PRO-GLY)3 BOUND COMPLEX OF N- TERMINAL DOMAIN AND PEPTIDE SUBSTRATE BINDING DOMAIN OF PROLYL-4 HYDROXYLASE (RESIDUES 1-238) TYPE I FROM HUMAN

4BT9 の概要

• エントリーDOI: 10.2210/pdb4bt9/pdb
• 関連するPDBエントリー: 4BT8 4BTA 4BTB
• 分子名称: PROLYL 4-HYDROXYLASE SUBUNIT ALPHA-1, (PRO-PRO-GLY)3 PEPTIDE (3 entities in total)
• 機能のキーワード: oxidoreductase, tetratricopeptide repeat motif, coiled-coil, proline rich peptide
• 由来する生物種: HOMO SAPIENS (HUMAN); 詳細
• 細胞内の位置: Endoplasmic reticulum lumen: P13674
• タンパク質・核酸の鎖数: 3
• 化学式量合計: 55810.03

構造登録者

Anantharajan, J.,Koski, M.K.,Wierenga, R.K. (登録日: 2013-06-14, 公開日: 2013-10-09, 最終更新日: 2023-12-20)

主引用文献

Anantharajan, J.,Koski, M.K.,Kursula, P.,Hieta, R.,Bergmann, U.,Myllyharju, J.,Wierenga, R.K.
The Structural Motifs for Substrate Binding and Dimerization of the Alpha Subunit of Collagen Prolyl 4-Hydroxylase
Structure, 21:2107-, 2013

PubMed Abstract: Collagen prolyl 4-hydroxylase (C-P4H) catalyzes the proline hydroxylation of procollagen, an essential modification in the maturation of collagens. C-P4H consists of two catalytic α subunits and two protein disulfide isomerase β subunits. The assembly of these subunits is unknown. The α subunit contains an N domain (1-143), a peptide-substrate-binding-domain (PSB, 144-244) and a catalytic domain (245-517). Here, we report the dimeric structure of the N-terminal region (1-244) of the α subunit. It is shown that the N domain has an important role in the assembly of the C-P4H tetramer, by forming an extended four-helix bundle that includes an antiparallel coiled-coil dimerization motif between the two α subunits. Complexes of this construct with a C-P4H inhibitor and substrate show the mode of peptide-binding to the PSB domain. Both peptides adopt a poly-(L)-proline-type-II helix conformation and bind in a curved, asymmetric groove lined by conserved tyrosines and an Arg-Asp salt bridge.

PubMed: 24207127
DOI: 10.1016/J.STR.2013.09.005

実験手法

X-RAY DIFFRACTION (1.9 Å)