Results 61 to 70 of about 305,158 (217)

Electronic landscape of the P-cluster of nitrogenase as revealed through many-electron quantum wavefunctions [PDF]

open access: yes, 2018
The electronic structure of the nitrogenase metal cofactors is central to nitrogen fixation. However, the P-cluster and iron molybdenum cofactor, each containing eight irons, have resisted detailed characterization of their electronic properties. Through exhaustive many-electron wavefunction simulations enabled by new theoretical methods, we report on ...
arxiv   +1 more source

Separable Hamiltonian equations on Riemann manifolds and related integrable hydrodynamic systems

open access: yes, 2002
A systematic construction of St\"{a}ckel systems in separated coordinates and its relation to bi-Hamiltonian formalism are considered. A general form of related hydrodynamic systems, integrable by the Hamilton-Jacobi method, is derived.
Antonowicz   +27 more
core   +1 more source

Projective cofactor decompositions of Boolean functions and the satisfiability problem [PDF]

open access: yesarXiv, 2016
Given a CNF formula $F$, we present a new algorithm for deciding the satisfiability (SAT) of $F$ and computing all solutions of assignments. The algorithm is based on the concept of \emph{cofactors} known in the literature. This paper is a fallout of the previous work by authors on Boolean satisfiability \cite{sul1, sul2,sude}, however the algorithm is
arxiv  

On the dimension of splines spaces over T-meshes with smoothing cofactor-conformality method [PDF]

open access: yesarXiv, 2012
The present paper provides a general formula for the dimension of spline space over T-meshes using smoothing cofactor-conformality method. And we introduce a new notion, Diagonalizable T-mesh, over which the dimension formula is only associated with the topological information of the T-mesh.
arxiv  

A role for cofactor-cofactor and cofactor-histone interactions in targeting p300, SWI/SNF and Mediator for transcription

open access: yesThe EMBO Journal, 2003
Transcriptional activation from chromatin by nuclear receptors (NRs) requires multiple cofactors including CBP/p300, SWI/SNF and Mediator. How NRs recruit these multiple cofactors is not clear. Here we show that activation by androgen receptor and thyroid hormone receptor is associated with the promoter targeting of SRC family members, p300, SWI/SNF ...
Philip A. Cole   +4 more
openaire   +4 more sources

Multiplication of solutions for linear overdetermined systems of partial differential equations

open access: yes, 2007
A large family of linear, usually overdetermined, systems of partial differential equations that admit a multiplication of solutions, i.e, a bi-linear and commutative mapping on the solution space, is studied.
Benenti   +8 more
core   +1 more source

Structure and regulation of ZCCHC4 in m6A-methylation of 28S rRNA. [PDF]

open access: yes, 2019
N6-methyladenosine (m6A) modification provides an important epitranscriptomic mechanism that critically regulates RNA metabolism and function. However, how m6A writers attain substrate specificities remains unclear. We report the 3.1 Å-resolution crystal
Gao, Linfeng   +6 more
core  

Automated method for study of drug metabolism [PDF]

open access: yes, 1973
Commercially available equipment can be modified to provide automated system for assaying drug metabolism by continuous flow-through. System includes steps and devices for mixing drug with enzyme and cofactor in the presence of pure oxygen, dialyzing ...
Feller, D. D., Furner, R. L.
core   +1 more source

A Canonical-based NPN Boolean Matching Algorithm Utilizing Boolean Difference and Cofactor Signature [PDF]

open access: yesarXiv, 2017
This paper presents a new compact canonical-based algorithm to solve the problem of single-output completely specified NPN Boolean matching. We propose a new signature vector Boolean difference and cofactor (DC) signature vector. Our algorithm utilizes the Boolean difference, cofactor signature and symmetry properties to search for canonical ...
arxiv  

Sulfite: Cytochrome \u3cem\u3ec\u3c/em\u3e Oxidoreductase from \u3cem\u3eThiobacillus novellus\u3c/em\u3e [PDF]

open access: yes, 2000
Direct oxidation of sulfite to sulfate occurs in various photo- and chemotrophic sulfur oxidizing microorganisms as the final step in the oxidation of reduced sulfur compounds and is catalyzed by sulfite:cytochrome c oxidoreductase (EC1.8.2.1).
Bennett, Brian   +6 more
core   +1 more source

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