Results 71 to 80 of about 15,716 (302)

dUTPase is essential in zebrafish development and possesses several single‐nucleotide variants with pronounced structural and functional consequences

open access: yesFEBS Open Bio, EarlyView.
dUTPases are involved in balancing the appropriate nucleotide pools. We showed that dUTPase is essential for normal development in zebrafish. The different zebrafish genomes contain several single‐nucleotide variations (SNPs) of the dut gene. One of the dUTPase variants displayed drastically lower protein stability and catalytic efficiency as compared ...
Viktória Perey‐Simon   +6 more
wiley   +1 more source

The Negativity of Negative Propositions [PDF]

open access: yes, 2012
The problem of truthmakers for negative propositions was introduced by Bertrand Russell in 1918. Since then the debate has mostly been concerned with whether to accept or reject their existence, and little has been said about what it is that makes a ...
Kühl, Carl Erik
core   +1 more source

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

open access: yesFEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn   +4 more
wiley   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

open access: yesFEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei   +3 more
wiley   +1 more source

Borders of a Game: Analysis of the Practical Phenomenology and Other Trends of Nowadays

open access: yesVilnius University Open Series, 2020
This article, through a prism of reduction, focuses on the gaming of practical phenomenology (M. van Manen), logical atomism (L. Wittgenstein), rhizomatic movement (Deleuze) as well as anthropocene moods in the playground of the education science.
Viktorija Voidogaitė
doaj   +1 more source

The Content and Acquisition of Lexical Concepts [PDF]

open access: yes, 2006
This thesis aims to develop a psychologically plausible account of concepts by integrating key insights from philosophy (on the metaphysical basis for concept possession) and psychology (on the mechanisms underlying concept acquisition).
Horsey, Richard
core   +1 more source

Chameleon sequences reveal structural effects in proteins representing micelle‐like distribution of hydrophobicity

open access: yesFEBS Open Bio, EarlyView.
Amino acids sequence of two different proteins with the same sequence (chameleon sequence—black boxes) represent in 3D structure of the proteins different secondary structures: HHHH—helical and BBB—Beta‐structural. The chains folded in water environment adopt different III‐order structures in which the chameleon fragments appear to adopt similar status
Irena Roterman   +4 more
wiley   +1 more source

The Cosmos as a World City: A Hylomorphic Foundation for Civic Renewal

open access: yesReligions
This paper contends that the West’s civic crisis is, at root, a cosmological crisis: civic renewal requires metaphysical repair. It is insufficient to endorse virtue ethics and demand civic virtues without a deeper account of reality that can sustain ...
William M. R. Simpson
doaj   +1 more source

Deleuze and Epicurean Philosophy: Atomic Speed and Swerve Speed

open access: yesJournal of French and Francophone Philosophy, 2013
This paper reconstructs Gilles Deleuze’s interpretation of Epicurean atomism, and explicates his claim that it represents a problematic idea, similar to the idea exemplified in early, “barbaric” accounts of the differential calculus.
Michael James Bennett
doaj   +1 more source

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