Results 11 to 20 of about 453,916 (245)

Do Amino Acid Antiporters Have Asymmetric Substrate Specificity?

open access: yesBiomolecules, 2023
Amino acid antiporters mediate the 1:1 exchange of groups of amino acids. Whether substrate specificity can be different for the inward and outward facing conformation has not been investigated systematically, although examples of asymmetric transport ...
Gregory Gauthier-Coles   +3 more
doaj   +1 more source

Structure-based engineering of substrate specificity for pinoresinol-lariciresinol reductases

open access: yesNature Communications, 2021
Pinoresinol–lariciresinol reductases (PLRs) are enzymes involved in the lignan biosynthesis. Here, crystal structures of three PLRs in the apo, substrate-bound and product-bound states, and accompanying mutagenesis provide insight into PLRs catalytic ...
Ying Xiao   +13 more
doaj   +1 more source

Substrate specificity of human ceramide kinase

open access: yesJournal of Lipid Research, 2005
Previous studies in our laboratory have established ceramide kinase (CERK) as a critical mediator of eicosanoid synthesis. To date, CERK has not been well characterized in vitro.
Dayanjan S. Wijesinghe   +5 more
doaj   +1 more source

Dissecting the Cytochrome P450 OleP Substrate Specificity: Evidence for a Preferential Substrate

open access: yesBiomolecules, 2020
The cytochrome P450 OleP catalyzes the epoxidation of aliphatic carbons on both the aglycone 8.8a-deoxyoleandolide (DEO) and the monoglycosylated L-olivosyl-8.8a-deoxyoleandolide (L-O-DEO) intermediates of oleandomycin biosynthesis.
Giacomo Parisi   +10 more
doaj   +1 more source

Comparative Studies on Retroviral Proteases: Substrate Specificity

open access: yesViruses, 2010
Exogenous retroviruses are subclassified into seven genera and include viruses that cause diseases in humans. The viral Gag and Gag-Pro-Pol polyproteins are processed by the retroviral protease in the last stage of replication and inhibitors of the HIV-1
József Tözsér
doaj   +1 more source

Substrate specificity of human MCPIP1 endoribonuclease

open access: yesScientific Reports, 2018
MCPIP1, also known as Regnase-1, is a ribonuclease crucial for regulation of stability of transcripts related to inflammatory processes. Here, we report that MCPIP1 acts as an endonuclease by degrading several stem-loop RNA structures and single-stranded
Mateusz Wilamowski   +3 more
doaj   +1 more source

Substrate Specificity of Recombinant Ser/Thr Protein Kinase

open access: yesBio-Protocol, 2015
Protein kinases are enzymes that phosphorylate proteins in a cell. Determination of kinase activity in reactions of phosphorylation is a very convenient way for a biochemical characterization of this group of enzymes.
Anna Zorina, Galina Novikova, Dmitry Los
doaj   +1 more source

Crystal Structure and Substrate Specificity of PTPN12

open access: yesCell Reports, 2016
PTPN12 is an important tumor suppressor that plays critical roles in various physiological processes. However, the molecular basis underlying the substrate specificity of PTPN12 remains uncertain.
Hui Li   +18 more
doaj   +1 more source

Phosphotyrosine Substrate Sequence Motifs for Dual Specificity Phosphatases. [PDF]

open access: yesPLoS ONE, 2015
Protein tyrosine phosphatases dephosphorylate tyrosine residues of proteins, whereas, dual specificity phosphatases (DUSPs) are a subgroup of protein tyrosine phosphatases that dephosphorylate not only Tyr(P) residue, but also the Ser(P) and Thr(P ...
Bryan M Zhao   +8 more
doaj   +1 more source

Substrate specificity in the biomimetic catalytic aerobic oxidation of styrene and cyclohexanone by metalloporphyrins: kinetics and mechanistic study

open access: yesGreen Chemical Engineering, 2021
Substrate specificity is a hallmark of enzymatic catalysis. In this work, the biomimetic catalytic oxidation of styrene and cyclohexanone by iron (III) porphyrins and molecular oxygen was carried out, and remarkable differences in efficiency were ...
Xian-Tai Zhou, Hong-Bing Ji
doaj   +1 more source

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