Programmed cell death (apoptosis) is a coordinated set of events eventually leading to the massive activation of specialized proteases (caspases) that cleave numerous substrates, orchestrating fairly uniform biochemical changes than culminate in cellular suicide. Apoptosis can be triggered by a variety of stimuli, from external signals or growth factor
Seunghyi, Kook +2 more
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Progressive reduction of its expression in rods reveals two pools of arrestin-1 in the outer segment with different roles in photoresponse recovery. [PDF]
Light-induced rhodopsin signaling is turned off with sub-second kinetics by rhodopsin phosphorylation followed by arrestin-1 binding. To test the availability of the arrestin-1 pool in dark-adapted outer segment (OS) for rhodopsin shutoff, we measured ...
Whitney M Cleghorn +7 more
doaj +1 more source
β-arrestin functionally regulates the non-bleaching pigment parapinopsin in lamprey pineal. [PDF]
The light response of vertebrate visual cells is achieved by light-sensing proteins such as opsin-based pigments as well as signal transduction proteins, including visual arrestin.
Emi Kawano-Yamashita +5 more
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Targeted disruption of β-arrestin 2-mediated signaling pathways by aptamer chimeras leads to inhibition of leukemic cell growth. [PDF]
β-arrestins, ubiquitous cellular scaffolding proteins that act as signaling mediators of numerous critical cellular pathways, are attractive therapeutic targets because they promote tumorigenesis in several tumor models.
Jonathan W Kotula +7 more
doaj +1 more source
Hormones may be key factors driving cancer development, and epidemiological findings suggest that steroid hormones play a crucial role in ovarian tumorigenesis.
Ji-Won Ryu +12 more
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Crystal structure of rhodopsin bound to arrestin by femtosecond X-ray laser. [PDF]
G-protein-coupled receptors (GPCRs) signal primarily through G proteins or arrestins. Arrestin binding to GPCRs blocks G protein interaction and redirects signalling to numerous G-protein-independent pathways.
Barty, Anton +71 more
core +1 more source
Targeted elimination of G proteins and arrestins defines their specific contributions to both intensity and duration of G protein-coupled receptor signalling [PDF]
G protein-coupled receptors (GPCRs) can initiate intracellular signalling cascades by coupling to an array of heterotrimeric G proteins and arrestin adaptor proteins. Understanding the contribution of each of these coupling options to GPCR signalling has
Alvarez-Curto, Elisa +6 more
core +1 more source
The effect of arrestin conformation on the recruitment of c-Raf1, MEK1, and ERK1/2 activation.
Arrestins are multifunctional signaling adaptors originally discovered as proteins that "arrest" G protein activation by G protein-coupled receptors (GPCRs).
Sergio Coffa +6 more
doaj +1 more source
An increased vulnerability has been detected after ischemia/reperfusion injury in cardiomyocytes in diabetic patients. Glucagon-like peptide-1 (GLP-1) has been proven to have a notable cardioprotective effect in cardiomyocytes.
Xietian Pan, Chengxiang Li, Haokao Gao
doaj +1 more source
β-Arrestin-Mediated Signaling Improves the Efficacy of Therapeutics
β-Arrestins (β-arrestin-1 and β-arrestin-2) were first identified as proteins that have the ability to desensitize G protein-coupled receptors (GPCRs). However, it has recently been found that β-arrestins can activate signaling pathways independent of G ...
Islam A.A.E.-H. Ibrahim, Hitoshi Kurose
doaj +1 more source

