5WSB

Pyruvate kinase (PYK) from Mycobacterium tuberculosis in complex with Oxalate, allosteric activators AMP and Glucose 6-Phosphate

5WSB の概要

• エントリーDOI: 10.2210/pdb5wsb/pdb
• 関連するPDBエントリー: 5WRP 5WS8 5WS9 5WSA 5WSC
• 分子名称: Pyruvate kinase, ADENOSINE MONOPHOSPHATE, 6-O-phosphono-alpha-D-glucopyranose, ... (8 entities in total)
• 機能のキーワード: pyruvate kinase, glycolysis, tetramer, allostery, synergism, phospho transferase, transferase
• 由来する生物種: Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)
• タンパク質・核酸の鎖数: 4
• 化学式量合計: 207165.11

構造登録者

Zhong, W.,Cai, Q.,El Sahili, A.,Lescar, J.,Dedon, P.C. (登録日: 2016-12-06, 公開日: 2017-11-15, 最終更新日: 2023-11-08)

主引用文献

Zhong, W.,Cui, L.,Goh, B.C.,Cai, Q.,Ho, P.,Chionh, Y.H.,Yuan, M.,Sahili, A.E.,Fothergill-Gilmore, L.A.,Walkinshaw, M.D.,Lescar, J.,Dedon, P.C.
Allosteric pyruvate kinase-based "logic gate" synergistically senses energy and sugar levels in Mycobacterium tuberculosis.
Nat Commun, 8:1986-1986, 2017

PubMed Abstract: Pyruvate kinase (PYK) is an essential glycolytic enzyme that controls glycolytic flux and is critical for ATP production in all organisms, with tight regulation by multiple metabolites. Yet the allosteric mechanisms governing PYK activity in bacterial pathogens are poorly understood. Here we report biochemical, structural and metabolomic evidence that Mycobacterium tuberculosis (Mtb) PYK uses AMP and glucose-6-phosphate (G6P) as synergistic allosteric activators that function as a molecular "OR logic gate" to tightly regulate energy and glucose metabolism. G6P was found to bind to a previously unknown site adjacent to the canonical site for AMP. Kinetic data and structural network analysis further show that AMP and G6P work synergistically as allosteric activators. Importantly, metabolome profiling in the Mtb surrogate, Mycobacterium bovis BCG, reveals significant changes in AMP and G6P levels during nutrient deprivation, which provides insights into how a PYK OR gate would function during the stress of Mtb infection.

PubMed: 29215013
DOI: 10.1038/s41467-017-02086-y

実験手法

X-RAY DIFFRACTION (2.25 Å)