Results 41 to 50 of about 1,971,711 (246)

Probing the activity modification space of the cysteine peptidase cathepsin K with novel allosteric modifiers.

open access: yesPLoS ONE, 2014
Targeting allosteric sites is gaining increasing recognition as a strategy for modulating the activity of enzymes, especially in drug design. Here we investigate the mechanisms of allosteric regulation of cathepsin K as a representative of cysteine ...
Marko Novinec   +2 more
doaj   +1 more source

Multiple conformations in solution of the maize C4-phosphoenolpyruvate carboxylase isozyme

open access: yesHeliyon, 2021
The photosynthetic phosphoenolpyruvate carboxylase isozyme from C4 plants (PEPC-C4) has a complex allosteric regulation, involving positive cooperativity in binding the substrate phosphoenolpyruvate as well as positive and negative allosteric effectors ...
Fátima Barreda-Huerta   +3 more
doaj  

Molecular mechanism of a covalent allosteric inhibitor of SUMO E1 activating enzyme

open access: yesNature Communications, 2018
E1 enzymes activate ubiquitin (Ub) and ubiquitin-like modifiers (Ubls) in the first step of Ub/Ubl conjugation cascades and represent potential targets for therapeutic intervention in cancer and other life-threatening diseases.
Z. Lv   +9 more
semanticscholar   +1 more source

The tertiary origin of the allosteric activation of E. coli glucosamine-6-phosphate deaminase studied by sol-gel nanoencapsulation of its T conformer.

open access: yesPLoS ONE, 2014
The role of tertiary conformational changes associated to ligand binding was explored using the allosteric enzyme glucosamine-6-phosphate (GlcN6P) deaminase from Escherichia coli (EcGNPDA) as an experimental model.
Sergio Zonszein   +3 more
doaj   +1 more source

Organism-adapted specificity of the allosteric regulation of pyruvate kinase in lactic acid bacteria. [PDF]

open access: yesPLoS Computational Biology, 2013
Pyruvate kinase (PYK) is a critical allosterically regulated enzyme that links glycolysis, the primary energy metabolism, to cellular metabolism. Lactic acid bacteria rely almost exclusively on glycolysis for their energy production under anaerobic ...
Nadine Veith   +5 more
doaj   +1 more source

Understanding allosteric and cooperative interactions in enzymes [PDF]

open access: yesThe FEBS Journal, 2013
The paper that introduced biochemists to the idea of allosteric feedback inhibition [Monod J, Changeux J‐P & Jacob F (1963) J Mol Biol 6, 306–329] is now 50 years old, and the two papers on models for enzyme cooperativity that followed it [Monod J, Wyman J & Changeux J‐P (1965) J Mol Biol 12, 88–118; Koshland DE, Némethy G & Filmer D (1966)
openaire   +5 more sources

Mapping of the Allosteric Site in Cholesterol Hydroxylase CYP46A1 for Efavirenz, a Drug That Stimulates Enzyme Activity*

open access: yesJournal of Biological Chemistry, 2016
Cytochrome P450 46A1 (CYP46A1) is a microsomal enzyme and cholesterol 24-hydroxylase that controls cholesterol elimination from the brain. This P450 is also a potential target for Alzheimer disease because it can be activated pharmacologically by some ...
Kyle W. Anderson   +5 more
semanticscholar   +1 more source

An Extended C-Terminus, the Possible Culprit for Differential Regulation of 5-Aminolevulinate Synthase Isoforms

open access: yesFrontiers in Molecular Biosciences, 2022
5-Aminolevulinate synthase (ALAS; E.C. 2.3.1.37) is a pyridoxal 5′-phosphate (PLP)-dependent enzyme that catalyzes the key regulatory step of porphyrin biosynthesis in metazoa, fungi, and α-proteobacteria.
Gregory A. Hunter   +3 more
doaj   +1 more source

Allosteric enzymes as biosensors for molecular diagnosis [PDF]

open access: yesFEBS Letters, 2003
Biosensors are hybrid analytical devices that amplify signals generated from the specific interaction between a receptor and the analyte, through a biochemical mechanism. Biosensors use tissues, whole cells, artificial membranes or cell components like proteins or nucleic acids as receptors, coupled to a physicochemical signal transducer.
openaire   +3 more sources

Insights Into the Allosteric Inhibition of the SUMO E2 Enzyme Ubc9.

open access: yesAngewandte Chemie, 2016
Conjugation of the small ubiquitin-like modifier (SUMO) to protein substrates is an important disease-associated posttranslational modification, although few inhibitors of this process are known.
W. M. Hewitt   +12 more
semanticscholar   +1 more source

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