Results 31 to 40 of about 418,378 (371)
Cofactor regeneration by a soluble pyridine nucleotide transhydrogenase for biological production of hydromorphone [PDF]
, 2000 We have applied the soluble pyridine nucleotide transhydrogenase of Pseudomonas fluorescens to a cell-free system for the regeneration of the nicotinamide cofactors NAD and NADP in the biological production of the important semisynthetic opiate drug ...
Boonstra, B +4 more
core +2 more sources
Identification and Expression Analysis of an Atypical Alkaline Phosphatase in Emiliania huxleyi
Frontiers 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]
, 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
Rabbit PrP Is Partially Resistant to in vitro Aggregation Induced by Different Biological Cofactors
Frontiers in Neuroscience, 2021 Prion diseases have been described in humans and other mammals, including sheep, goats, cattle, and deer. Since mice, hamsters, and cats are susceptible to prion infection, they are often used to study the mechanisms of prion infection and conversion ...
Juliana N. Angelli +7 more
doaj +1 more source
Classical planar algebraic curves realizable by quadratic polynomial differential systems [PDF]
, 2017 In this paper we show planar quadratic polynomial differentialsystems exhibiting as solutions some famous planar invariant algebraic curves. Also we put particular attention to the Darboux integrability of these differential systems.The author is ...
García, I. A. (Isaac A.), Llibre, Jaume
core +4 more sources
Optimization of Enzymatic Gas-Phase Reactions by Increasing the Long-Term Stability of the Catalyst [PDF]
, 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
Molecules, 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
Texture and Cofactor Zeros of the Neutrino Mass Matrix
, 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
eLife, 2016 The metallocofactor involved in fixing nitrogen is not a rigid scaffold, as was previously thought.
Wittenborn, Elizabeth Charlot +2 more
openaire +6 more sources
Cofactor and Cofactor Mimetics
Blood, 2019 Many natural enzymes need the assistance of protein cofactors to catalyze chemical reactions at a physiologically relevant speed and several of the enzymes that make up for the coagulation cascade are no exception in this regard. Notably, activated factors VII, IX and X display relatively poor enzymatic activity towards their respective macromolecular ...
openaire +2 more sources