Results 31 to 40 of about 305,158 (217)
How many metals does it take to fix N2? A mechanistic overview of biological nitrogen fixation [PDF]
, 2006 During the process of biological nitrogen fixation, the enzyme nitrogenase catalyzes the ATP-dependent reduction of dinitrogen to ammonia. Nitrogenase consists of two component metalloproteins, the iron (Fe) protein and the molybdenum-iron (MoFe) protein;
Howard, James B., Rees, Douglas C.
core +1 more source
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
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
The role of algebraic solutions in planar polynomial differential systems [PDF]
, 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
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 +3 more sources
Neutrino Mass Matrices with Two Equalities Between the Elements or Cofactors [PDF]
Phys.Rev.D87:073011,2013, 2013 We study the implications of the existence of two equalities between the elements or cofactors of the neutrino mass matrix. There are sixty five structures of this type for each case. Phenomenological implications for unknown parameters like the effective Majorana mass of the electron neutrino and CP-violating phases are examined for the viable cases ...
arxiv +1 more source
Deutsches Ärzteblatt international, 2011 The article described very competently the diagnostic evaluation and therapy of dyslexia from the perspective of child and adolescent psychiatry. In order to be able to assess the child in its entire cognitive-language learning development and not only with regard to the acquisition of written language competencies, the importance of peripheral ...
openaire +3 more sources
Neutrino Mass Matrices with Two Vanishing Elements/Cofactors [PDF]
, 2015 We study the phenomenological implications of the recent neutrino data for class B of two texture zeros and two vanishing cofactors for Majorana neutrinos in the flavor basis. We find that classes $B_{1}$($B_2$) of two texture zeros and classes $B_5$($B_6$) of two vanishing cofactors have similar predictions for neutrino oscillation parameters for the ...
arxiv +1 more source
New possibilities of hybrid texture of neutrino mass matrix [PDF]
Advances in High Energy Physics,Volume 2018, Article ID 1056472,
24 pages, 2018 In this paper, we investigate the noval possibilities of hybrid textures comprising a vanishing minor (or element) and two equal elements (or cofactors) in light neutrino mass matrix $M_{\nu}$. Such type of texture structures lead to sixty phenomenological cases each, out of which only fifty six are viable with texture containing a vanishing minor and ...
arxiv +1 more source
Short proofs of ideal membership [PDF]
arXiv, 2023 A cofactor representation of an ideal element, that is, a representation in terms of the generators, can be considered as a certificate for ideal membership. Such a representation is typically not unique, and some can be a lot more complicated than others.
arxiv