Relationship of Catalysis and Active Site Loop Dynamics in the (βα)8-Barrel Enzyme Indole-3-glycerol Phosphate Synthase

S Schlee, T Klein, M Schumacher, J Nazet, R Merkl… - Biochemistry, 2018 - ACS Publications
It is important to understand how the catalytic activity of enzymes is related to their
conformational flexibility. We have studied this activity–flexibility correlation using the …

Loop‐loop interactions govern multiple steps in indole‐3‐glycerol phosphate synthase catalysis

MJ Zaccardi, KF O'Rourke, EM Yezdimer… - Protein …, 2014 - Wiley Online Library
Substrate binding, product release, and likely chemical catalysis in the tryptophan
biosynthetic enzyme indole‐3‐glycerol phosphate synthase (IGPS) are dependent on the …

Controlling Active Site Loop Dynamics in the (β/α)8 Barrel Enzyme Indole-3-Glycerol Phosphate Synthase

KF O'Rourke, AM Jelowicki, DD Boehr - Catalysts, 2016 - mdpi.com
The β1α1 loop in the tryptophan biosynthetic enzyme indole-3-glycerol phosphate synthase
(IGPS) is important for substrate binding, product release and chemical catalysis. IGPS …

Kinetic mechanism of indole-3-glycerol phosphate synthase

S Schlee, S Dietrich, T Kurćon, P Delaney… - Biochemistry, 2013 - ACS Publications
The (βα) 8-barrel enzyme indole-3-glycerol phosphate synthase (IGPS) catalyzes the
multistep transformation of 1-(o-carboxyphenylamino)-1-deoxyribulose 5-phosphate (CdRP) …

Folding mechanism of indole-3-glycerol phosphate synthase from Sulfolobus solfataricus: a test of the conservation of folding mechanisms hypothesis in (βα) 8 barrels

WR Forsyth, CR Matthews - Journal of molecular biology, 2002 - Elsevier
As a test of the hypothesis that folding mechanisms are better conserved than sequences in
TIM barrels, the equilibrium and kinetic folding mechanisms of indole-3-glycerol phosphate …

Role of the N-Terminal Extension of the (βα)8-Barrel Enzyme Indole-3-glycerol Phosphate Synthase for Its Fold, Stability, and Catalytic Activity,

B Schneider, T Knöchel, B Darimont, M Hennig… - Biochemistry, 2005 - ACS Publications
Indole-3-glycerol phosphate synthase (IGPS) catalyzes the fifth step in the biosynthesis of
tryptophan. It belongs to the large and versatile family of (βα) 8-barrel enzymes but has an …

Coevolving residues of (β/α) 8-barrel proteins play roles in stabilizing active site architecture and coordinating protein dynamics

H Shen, F Xu, H Hu, F Wang, Q Wu, Q Huang… - Journal of structural …, 2008 - Elsevier
Indole-3-glycerol phosphate synthase (IGPS) is a representative of (β/α) 8-barrel proteins—
the most common enzyme fold in nature. To better understand how the constituent amino …

Molecular dynamics studies of ground state and intermediate of the hyperthermophilic indole-3-glycerol phosphate synthase

D Mazumder-Shivakumar… - Proceedings of the …, 2004 - National Acad Sciences
Indole-3-glycerol phosphate synthase catalyzes the terminal ring closure step in tryptophan
biosynthesis. In this paper, we compare the results from molecular dynamics (MD) …

The hyperthermostable indoleglycerol phosphate synthase from Thermotoga maritima is destabilized by mutational disruption of two solvent-exposed salt bridges

A Merz, T Knöchel, JN Jansonius… - Journal of molecular …, 1999 - Elsevier
The recombinantly expressed protein indoleglycerol phosphate synthase from the
hyperthermophilic bacterium Thermotoga maritima (tIGPS) was purified and characterized …

[PDF][PDF] 2.0 Å structure of indole-3-glycerol phosphate synthase from the hyperthermophile Sulfolobus solfataricus: possible determinants of protein stability

M Hennig, B Darimont, R Sterner, K Kirschner… - Structure, 1995 - cell.com
Background: Recent efforts to understand the basis of protein stability have focussed
attention on comparative studies of proteins from hyperthermophilic and mesophilic …