Results 31 to 40 of about 1,865,436 (219)

LytTR Regulatory Systems: A potential new class of prokaryotic sensory system. [PDF]

open access: yesPLoS Genetics, 2018
The most commonly studied prokaryotic sensory signal transduction systems include the one-component systems, phosphosignaling systems, extracytoplasmic function (ECF) sigma factor systems, and the various types of second messenger systems.
Zhengzhong Zou   +8 more
doaj   +1 more source

The period circadian clock 2 gene responds to glucocorticoids and regulates osteogenic capacity

open access: yesRegenerative Therapy, 2019
Introduction: The central regulatory system that generates biological rhythms is regulated by circadian clock genes expressed by cells in the suprachiasmatic nucleus.
Takahiro Abe   +3 more
doaj   +1 more source

Emerging Concepts on the Role of ADP-Ribosylation

open access: yesChallenges, 2020
NAD+ has emerged as a crucial element in both bioenergetic and signaling pathways, since it acts as a key regulator of cellular and organism homeostasis.
Palmiro Poltronieri
doaj   +1 more source

Roles of Nicotinamide Adenine Dinucleotide (NAD+) in Biological Systems

open access: yesChallenges, 2018
NAD+ has emerged as a crucial element in both bioenergetic and signaling pathways since it acts as a key regulator of cellular and organism homeostasis. NAD+ is a coenzyme in redox reactions, a donor of adenosine diphosphate-ribose (ADPr) moieties in ADP-
Palmiro Poltronieri, Nataša Čerekovic
doaj   +1 more source

A framework for P2P application development [PDF]

open access: yes, 2008
Although Peer-to-Peer (P2P) computing has become increasingly popular over recent years, there still exist only a very small number of application domains that have exploited it on a large scale.
Gilleade, Kiel   +6 more
core   +1 more source

Tetramerisation of the CRISPR ring nuclease Crn3/Csx3 facilitates cyclic oligoadenylate cleavage

open access: yeseLife, 2020
Type III CRISPR systems detect foreign RNA and activate the cyclase domain of the Cas10 subunit, generating cyclic oligoadenylate (cOA) molecules that act as a second messenger to signal infection, activating nucleases that degrade the nucleic acid of ...
Januka S Athukoralage   +5 more
doaj   +1 more source

Second messenger systems underlying amine and peptide actions on cardiac muscle in the horseshoe crab, Limulus polyphemus [PDF]

open access: yes, 1989
The biochemical mechanisms by which octopamine, catecholamines and the peptide proctolin exert their actions on Limulus cardiac muscle were investigated.
Groome, J. R., Watson, Winsor H., III
core   +2 more sources

Bacterial rotary export ATPases are allosterically regulated by the nucleotide second messenger cyclic-di-GMP [PDF]

open access: yes, 2015
The widespread second messenger molecule cyclic di-GMP (cdG) regulates the transition from motile and virulent lifestyles to sessile, biofilm-forming ones in a wide range of bacteria. Many pathogenic and commensal bacterial-host interactions are known to
Abel   +89 more
core   +1 more source

Age-related deficits in synaptic plasticity rescued by activating PKA or PKC in sensory neurons of Aplysia californica

open access: yesFrontiers in Aging Neuroscience, 2015
Brain aging is associated with declines in synaptic function that contribute to memory loss, including reduced postsynaptic response to neurotransmitters and decreased neuronal excitability.
Andrew T Kempsell, Lynne A Fieber
doaj   +1 more source

Signaling pathways for transduction of the initial message of the glycocode into cellular responses [PDF]

open access: yes, 1998
The sugar units of glycan structures store information and establish an alphabet of life. The language of the oligosaccharide coding units is deciphered by receptors such as lectins and the decoded message can be transduced by multiple signaling pathways.
Gabius, Hans-Joachim, Villalobo, A.
core   +2 more sources

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