Results 91 to 100 of about 10,758,453 (263)
Structural and biochemical analysis of a B12 superbinder
FEBS Letters, EarlyView.BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices +3 more
wiley +1 more source
A characterization of central extensions in the variety of quandles
, 2017 During the last years some categorical properties of the category Qnd of quandles have been investigated. We shall first recall some of these results that will be useful for the present work, and then consider the subvariety SymQnd of Qnd consisting in ...
International Category Theory Conference 2017 +1 more
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Midwestern Regional Climate Center [PDF]
, 2001 Made available in DSpace on 2016-11-14T22:36:27Z (GMT). No. of bitstreams: 2 ISWSIEM2001-01.pdf: 146176 bytes, checksum: 791a8da476fabb8bec8c3d10ae0a0993 (MD5) license.txt: 3973 bytes, checksum: 6c1c5beee39794d995a5ff442f5bd9ab (MD5) Previous issue ...
Midwestern Regional Climate Center
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FEBS Letters, EarlyView.How do genomes gain new functional parts? In eukaryotes, which tend to evolve under weak selection, much of the genome is junk. Palazzo and Qiu borrow the logic of Markov chains to show how non‐functional DNA becomes functional through the appearance of intermediate states, which arise due to epistasis, buffering, and biochemical messiness, allowing ...
Alexander F. Palazzo, Yi Qiu
wiley +1 more source
International Category Theory conference CT2025, Masaryk University, Brno, Czech Republic.
Building pretorsion theories from torsion theories Abstract: Pretorsion theories are defined as "non-pointed torsion theories", where the zero object and the zero morphisms are replaced by a class of "trivial" objects and a suitable ideal of morphisms ...
International Category Theory conference CT2025 +1 more
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Challenging the role of implicit processes in probabilistic category learning [PDF]
, 2007 Considerable interest in the hypothesis that different cognitive tasks recruit qualitatively distinct processing systems has led to the proposal of separate explicit (declarative) and implicit (procedural) systems.
Lagnado, DA, Shanks, DR, Newell, BR
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The Shewanella oneidensis Fic enzyme SoFic targets the switch‐I region of EF‐Tu for AMPylation
FEBS Letters, EarlyView.Fic enzymes mediate diverse post‐translational modifications across all domains of life, including AMPylation. Prokaryotic EF‐Tu can be AMPylated and deAMPylated by the conserved Fic enzyme SoFic. Structural and biochemical approaches were used to characterize the effect of AMPylation on EF‐Tu, SoFic's enzymatic activities, and the enzyme‐target ...
Svenja Runge +6 more
wiley +1 more source
Restriction Category Perspectives of Partial Computation and Geometry
, 2017 This thesis introduces several structures based on Cockett and Lack’s restriction categories which find applications in partial computation, geometry, topology and two-dimensional category theory.
DeWolf, Darien
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The co-smash product as an intrinsic tensor product [PDF]
, 2014 While the co-smash product of objects in a semi-abelian category may be used as a formal commutator [2, 3], ever since its introduction in [1] it has also been clear that certain tensor products appear as co-smash products.
Van der Linden, Tim +1 more
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FEBS Letters, EarlyView.Heterodimeric amino acid transporters consist of SLC7 and SLC3 family proteins arranged in a conserved structural organization. They regulate nutrient transport across cell membranes, supporting essential cellular functions. These transporters also contribute to xenobiotic/drug uptake and distribution.
Mariafrancesca Scalise +5 more
wiley +1 more source