Now showing items 1-10 of 13
A functional analysis of the spacer of V(D)J recombination signal sequences.
(PLoS Biol, 2003-10)
During lymphocyte development, V(D)J recombination assembles antigen receptor genes from component V, D, and J gene segments. These gene segments are flanked by a recombination signal sequence (RSS), which serves as the ...
beta-Arrestin-mediated PDE4 cAMP phosphodiesterase recruitment regulates beta-adrenoceptor switching from Gs to Gi.
(Proc Natl Acad Sci U S A, 2003-02-04)
Phosphorylation of the beta(2) adrenoreceptor (beta(2)AR) by cAMP-activated protein kinase A (PKA) switches its predominant coupling from stimulatory guanine nucleotide regulatory protein (G(s)) to inhibitory guanine nucleotide ...
Faces evoke spatially differentiated patterns of BOLD activation and deactivation.
Using fMRI techniques sensitive to blood oxygen-level dependent (BOLD) contrast, we measured brain activity in participants (n=8) as they viewed images of faces presented periodically within a continuously changing montage ...
Prospective estimation of recombination signal efficiency and identification of functional cryptic signals in the genome by statistical modeling.
(J Exp Med, 2003-01-20)
The recombination signals (RS) that guide V(D)J recombination are phylogenetically conserved but retain a surprising degree of sequence variability, especially in the nonamer and spacer. To characterize RS variability, we ...
Does higher hospital cost imply higher quality of care?
(Review of Economics and Statistics, 2003-02-01)
This study investigates whether higher input use per stay in the hospital (treatment intensity) and longer length of stay improve outcomes of care. We allow for endogeneity of intensity and length of stay by estimating a ...
Enhanced rewarding properties of morphine, but not cocaine, in beta(arrestin)-2 knock-out mice.
(J Neurosci, 2003-11-12)
The reinforcing and psychomotor effects of morphine involve opiate stimulation of the dopaminergic system via activation of mu-opioid receptors (muOR). Both mu-opioid and dopamine receptors are members of the G-protein-coupled ...
β-Arrestin-2 regulates the development of allergic asthma
(Journal of Clinical Investigation, 2003-08-01)
Asthma is a chronic inflammatory disorder of the airways that is coordinated by Th2 cells in both human asthmatics and animal models of allergic asthma. Migration of Th2 cells to the lung is key to their inflammatory function ...
Independent beta-arrestin 2 and G protein-mediated pathways for angiotensin II activation of extracellular signal-regulated kinases 1 and 2.
(Proc Natl Acad Sci U S A, 2003-09-16)
Stimulation of a mutant angiotensin type 1A receptor (DRY/AAY) with angiotensin II (Ang II) or of a wild-type receptor with an Ang II analog ([sarcosine1,Ile4,Ile8]Ang II) fails to activate classical heterotrimeric G protein ...
A magnificent time with the "magnificent seven" transmembrane spanning receptors.
(Circ Res, 2003-03-07)
Desensitization, internalization, and signaling functions of beta-arrestins demonstrated by RNA interference.
(Proc Natl Acad Sci U S A, 2003-02-18)
Beta-arrestins bind to activated G protein-coupled receptor kinase-phosphorylated receptors, which leads to their desensitization with respect to G proteins, internalization via clathrin-coated pits, and signaling via a ...