Results 31 to 40 of about 409,776 (376)

Optimization of Enzymatic Gas-Phase Reactions by Increasing the Long-Term Stability of the Catalyst [PDF]

open access: yes, 2004
Enzymatic gas-phase reactions are usually performed in continuous reactors, and thus very stable and active catalysts are required to perform such transformations on cost-effective levels.
Büchs, Jochen,   +4 more
core   +2 more sources

The Purification and Mechanism of Action of Human Antithrombin-Heparin Cofactor

open access: hybridJournal of Biological Chemistry, 1973
Robert Rosenberg, Paul S. Damus
openalex   +2 more sources

Non‐DNA‐binding cofactors enhance DNA‐binding specificity of a transcriptional regulatory complex

open access: yesMolecular Systems Biology, 2011
Recruitment of cofactors to specific DNA sites is integral for specificity in gene regulation. As a model system, we examined how targeting and transcriptional control of the sulfur metabolism genes in Saccharomyces cerevisiae is governed by recruitment ...
Trevor Siggers   +4 more
doaj   +1 more source

A 7-Deazaadenosylaziridine Cofactor for Sequence-Specific Labeling of DNA by the DNA Cytosine-C5 Methyltransferase M.HhaI

open access: yesMolecules, 2015
DNA methyltransferases (MTases) catalyze the transfer of the activated methyl group of the cofactor S-adenosyl-l-methionine (AdoMet or SAM) to the exocyclic amino groups of adenine or cytosine or the C5 ring atom of cytosine within specific DNA sequences.
Falk Kunkel, Rudi Lurz, Elmar Weinhold
doaj   +1 more source

Characterizing metabolic drivers of Clostridioides difficile infection with activity-based hydrazine probes

open access: yesFrontiers in Pharmacology, 2023
Many enzymes require post-translational modifications or cofactor machinery for primary function. As these catalytically essential moieties are highly regulated, they act as dual sensors and chemical handles for context-dependent metabolic activity ...
Katelyn A. Bustin   +6 more
doaj   +1 more source

Integrability of planar polynomial differential systems through linear differential equations [PDF]

open access: yes, 2005
In this work, we consider rational ordinary differential equations dy/dx = Q(x,y)/P(x,y), with Q(x,y) and P(x,y) coprime polynomials with real coefficients.
Giacomini, Héctor   +2 more
core   +6 more sources

Identification and Expression Analysis of an Atypical Alkaline Phosphatase in Emiliania huxleyi

open access: yesFrontiers in Microbiology, 2018
Emiliania huxleyi, a cosmopolitan coccolithophore in the modern ocean, plays an important role in the carbon cycle and local climate feedback as it can form extensive blooms, calcify, and produce dimethylsulfoniopropionate (DMSP) leading to the ...
Tangcheng Li   +6 more
doaj   +1 more source

Identity and function of an essential nitrogen ligand of the nitrogenase cofactor biosynthesis protein NifB. [PDF]

open access: yes, 2020
NifB is a radical S-adenosyl-L-methionine (SAM) enzyme that is essential for nitrogenase cofactor assembly. Previously, a nitrogen ligand was shown to be involved in coupling a pair of [Fe4S4] clusters (designated K1 and K2) concomitant with carbide ...
Britt, R David   +7 more
core   +1 more source

The role of algebraic solutions in planar polynomial differential systems [PDF]

open access: yes, 2005
We study a planar polynomial differential system, given by \dot{x}=P(x,y), \dot{y}=Q(x,y). We consider a function I(x,y)=\exp \{h_2(x) A_1(x,y) \diagup A_0(x,y) \} h_1(x) \prod_{i=1}^{\ell} (y-g_i(x))^{\alpha_i}, where g_i(x) are algebraic functions, A_1(
Giacomini, Héctor   +2 more
core   +5 more sources

Texture and Cofactor Zeros of the Neutrino Mass Matrix

open access: yes, 2014
We study Majorana neutrino mass matrices that have two texture zeros, or two cofactor zeros, or one texture zero and one cofactor zero. The two texture/cofactor zero conditions give four constraints, which in conjunction with the five measured ...
Liao, Jiajun, Marfatia, D., Whisnant, K.
core   +1 more source

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