Results 71 to 80 of about 497,883 (326)

Chain-length-dependent adsorption of extracellular DNA on biochar: Behaviors, mechanisms, and structural Stability

open access: yesWater Research X
The environmental fate of extracellular DNA is significantly influenced by its interaction with widely used biochar. However, a systematic understanding of how DNA chain length and biochar properties jointly govern the adsorption process, mechanism, and ...
Xiao Sun   +5 more
doaj   +1 more source

Study of the electrochemical behaviors of ion-binding to calmodulin

open access: yesJournal of Hebei University of Science and Technology, 2017
In order to research the competitive binding with CaM between metal ions and Ca<sup>2+</sup>, electrochemical impedance spectroscopy (EIS) of ion (such as Ca<sup>2+</sup>,Cd<sup>2+</sup>,Al<sup>3+</sup>,Fe ...
Min CUI, Jujie REN, Junxin LI
doaj   +1 more source

The envenomation of general physiology throughout the last century. [PDF]

open access: yes, 2017
Toxins are the poisonous products of organisms. Toxins serve vital defensive and offensive functions for those that harbor them: stinging scorpions, pesticidal plants, sanguinary snakes, fearless frogs, sliming snails, noxious newts, and smarting spiders.
Sack, Jon T
core   +1 more source

Conformational Changes in Concanavalin A

open access: yesJournal of Biological Chemistry, 1971
Abstract The circular dichroic spectrum of homogeneous concanavalin A shows changes in the near ultraviolet upon specific binding of α-methyl-d-mannoside. The far ultraviolet spectrum shows no evidence of α helical structure but most closely resembles the spectrum of the model for type II-β structure, poly-S-carboxymethyl-l-cysteine.
M N, Pflumm, J L, Wang, G M, Edelman
openaire   +2 more sources

Real‐time assay of ribonucleotide reductase activity with a fluorescent RNA aptamer

open access: yesFEBS Letters, EarlyView.
Ribonucleotide reductases (RNR) synthesize DNA building blocks de novo, making them crucial in DNA replication and drug targeting. FLARE introduces the first single‐tube real‐time coupled RNR assay, which enables isothermal tracking of RNR activity at nanomolar enzyme levels and allows the reconstruction of allosteric regulatory patterns and rapid ...
Jacopo De Capitani   +4 more
wiley   +1 more source

The direct modulatory activity of zinc toward ion channels

open access: yesIntegrative Medicine Research, 2015
The divalent zinc ion is a cation that plays an indispensable role as a structural constituent of numerous proteins, including enzymes and transcription factors.
Sujin Noh   +6 more
doaj   +1 more source

Directional, Low‐Energy Driven Thermal Actuating Bilayer Enabled by Coordinated Submolecular Switching

open access: yesAdvanced Science, 2021
The authors reveal a thermal actuating bilayer that undergoes reversible deformation in response to low‐energy thermal stimuli, for example, a few degrees of temperature increase.
Michael Leveille   +12 more
doaj   +1 more source

DNA unwinding heterogeneity by RecBCD results from static molecules able to equilibrate. [PDF]

open access: yes, 2013
Single-molecule studies can overcome the complications of asynchrony and ensemble-averaging in bulk-phase measurements, provide mechanistic insights into molecular activities, and reveal interesting variations between individual molecules.
Baskin, Ronald J   +2 more
core  

Structure of FcRY, an avian immunoglobulin receptor related to mammalian mannose receptors, and its complex with IgY [PDF]

open access: yes, 2011
Fc receptors transport maternal antibodies across epithelial cell barriers to passively immunize newborns. FcRY, the functional counterpart of mammalian FcRn (a major histocompatibility complex homolog), transfers IgY across the avian yolk sac, and ...
BENNETT   +22 more
core   +3 more sources

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

open access: yesFEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

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