Results 91 to 100 of about 8,032 (234)

Guanylyl cyclases with the topology of mammalian adenylyl cyclases and an N-terminal P-type ATPase-like domain in Paramecium, Tetrahymena and Plasmodium [PDF]

open access: yes, 1999
We cloned a guanylyl cyclase of 280 kDa from the ciliate Paramecium which has an N-terminus similar to that of a P-type ATPase and a C-terminus with a topology identical to mammalian adenylyl cyclases.
Reimer, Andreas   +6 more
core   +1 more source

Endothelium‐ and epithelium‐derived novel endogenous catecholamines as modulators of the autonomic nervous system

open access: yesBritish Journal of Pharmacology, EarlyView.
Abstract Catecholamines are classically viewed as neuronal transmitters and adrenal hormones; however, accumulating evidence demonstrates that sources other than nerve fibres and adrenal medulla play a fundamental role in local organ regulation. Physiological paradoxes, such as preserved organ function after denervation or transplantation, challenge a ...
Mariana G. de Oliveira   +3 more
wiley   +1 more source

Mycobacterial adenylyl cyclases: Biochemical diversity and structural plasticity

open access: yes, 2006
The conversion of adenine and guanine nucleoside triphosphates to cAMP and cGMP is carried out by nucleotide cyclases, which vary in their primary sequence and are therefore grouped into six classes.
Shenoy, Avinash R.   +5 more
core   +1 more source

Agonist‐specific conformational dynamics at the β2‐adrenoceptor dictate allosteric modulation of Gαs signalling and bronchodilation

open access: yesBritish Journal of Pharmacology, EarlyView.
Abstract Background and Purpose β2‐adrenoceptor (β2AR) agonists are the cornerstone of asthma therapy and promote bronchodilation through Gαs signalling in airway smooth muscle (ASM), but their efficacy is limited by β‐arrestin‐mediated β2AR desensitization.
Sushrut D. Shah   +7 more
wiley   +1 more source

Dose–Response Effect of Glucagon on Glucose, Beta‐Cell Secretion and Metabolism in Healthy Individuals

open access: yesDiabetes, Obesity and Metabolism, EarlyView.
ABSTRACT Aim Glucagon is a key regulator of glucose and energy metabolism, yet the dose–response effects of glucagon on markers of metabolism in humans are not fully characterised. We investigated the dose‐dependent effects of glucagon on glucose metabolism, β‐cell secretion and markers of hepatic metabolism in healthy adults.
Sophie Betty Brock   +4 more
wiley   +1 more source

Spatially compartmentalized phase regulation of a Ca2+-cAMP-PKA oscillatory circuit

open access: yeseLife, 2020
Signaling networks are spatiotemporally organized to sense diverse inputs, process information, and carry out specific cellular tasks. In β cells, Ca2+, cyclic adenosine monophosphate (cAMP), and Protein Kinase A (PKA) exist in an oscillatory circuit ...
Brian Tenner   +9 more
doaj   +1 more source

Soluble adenylyl cyclase in the eye

open access: yesBiochimica et Biophysica Acta (BBA) - Molecular Basis of Disease, 2014
Adenylyl cyclases (ACs) are a family of enzymes which convert ATP to cAMP, an essential intermediate in many signal transduction pathways. Of the 10 AC genes in man, 9 fall into the category of transmembrane ACs (tmACs), which associate with G-protein coupled receptors (GPCRs) and are activated by forskolin.
Lee, Yong S.   +2 more
openaire   +2 more sources

Analgesic effects of alpha‐2‐adrenoreceptor agonists in equine medicine: systemic, spinal, and local applications

open access: yesEquine Veterinary Education, EarlyView.
Summary Alpha‐2‐adrenoreceptor agonists provide analgesia when used as sole agents but can also be used in combination with other drugs for their additive and potentially synergistic effects. Further, because of their effects on blood flow, alpha‐2‐adrenoreceptor agonists act to extend and perhaps intensify the effects of drugs, such as local ...
J. Brandly   +4 more
wiley   +1 more source

Cyclic AMP signalling in pancreatic islets

open access: yes, 2010
Cyclic 3'5'AMP (cAMP) is an important physiological amplifier of glucose-induced insulin secretion by the pancreatic islet β-cell, where it is formed by the activity of adenylyl cyclases, which are stimulated by glucose, through elevation in ...
Nigel J. Pyne   +7 more
core   +1 more source

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