... that both ATP production and proton leak would be down-regulated during the dormancy period, with proton leak down-regulated to a greater extent to maximise energy savings. This would be reflected by a higher RCR in dormant animals compared with active ones. In support of this hypothesis, after 7 months...

... differ. There may be separate ATP and GTP receptors since ATP and GTP responses do not cross-adapt and ‘cold’ (unlabeled) GTP is not a good inhibitor of [ 32 P]ATP binding. These results suggests that T. thermophila possess high-affinity surface receptors for ATP that are down-regulated during...

... Oncorhynchus mykiss rainbow trout red blood cell -adrenoreceptors catecholamines down-regulation Chronic elevation of plasma catecholamine concentrations appears to attenuate the red blood cell adrenergic response. Rainbow trout exposed to moderate levels of hypoxia (water partial pressure...