5OLX

5-fluorotryptophan labeled beta-phosphoglucomutase in a closed conformation, orthorhomic crystal form

5OLX の概要

• エントリーDOI: 10.2210/pdb5olx/pdb
• 分子名称: Beta-phosphoglucomutase, MAGNESIUM ION, 6-O-phosphono-beta-D-glucopyranose, ... (5 entities in total)
• 機能のキーワード: phosphoryl transfer, nmr labeling, 19f-nmr, isomerase
• 由来する生物種: Lactococcus lactis subsp. lactis (Streptococcus lactis)
• 細胞内の位置: Cytoplasm : P71447
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 24909.52

構造登録者

Bowler, M.W.,von Velsen, J. (登録日: 2017-07-28, 公開日: 2017-11-01, 最終更新日: 2020-07-29)

主引用文献

Ampaw, A.,Carroll, M.,von Velsen, J.,Bhattasali, D.,Cohen, A.,Bowler, M.W.,Jakeman, D.L.
Observing enzyme ternary transition state analogue complexes by19F NMR spectroscopy.
Chem Sci, 8:8427-8434, 2017

PubMed Abstract: Ternary transition state analogue (TSA) complexes probing the isomerization of β-d-glucose 1-phosphate (G1P) into d-glucose 6-phosphate (G6P) catalyzed by catalytically active, fluorinated (5-fluorotryptophan), β-phosphoglucomutase (βPGM) have been observed directly by F NMR spectroscopy. In these complexes MgF and AlF are surrogates for the transferring phosphate. However, the relevance of these metal fluorides as TSA complexes has been queried. The 1D F spectrum of a ternary TSA complex presented a molar equivalence between fluorinated enzyme, metal fluoride and non-isomerizable fluoromethylenephosphonate substrate analogue. Ring flips of the 5-fluoroindole ring remote from the active site were observed by both F NMR and X-ray crystallography, but did not perturb function. This data unequivocally demonstrates that the concentration of the metal fluoride complexes is equivalent to the concentration of enzyme and ligand in the TSA complex in aqueous solution.

PubMed: 29619190
DOI: 10.1039/c7sc04204c

実験手法

X-RAY DIFFRACTION (1.38 Å)