Further, vacant receptors exert a low level of constitutive cAMP signalling, which is tightly controlled by PDE4 activity; activation of RXFP1 with sub-picomolar concentrations of relaxin drives further cAMP production by AC2, overcoming the tonic regulation exerted by PDE4.
The patterns of regulation of the two orthologs differ, since in P. pastoris Mxr1p is constitutively expressed at low level and exerts its regulatory function by changing subcellular localization.
While the high specific activity allows for an efficient cofactor recycling even with a low level of expression (exerting lower metabolic burden onto the cells and making it more suitable for enzymatic cascading), the low K M-value, on the other hand, allows the enzyme to immediately react with a small amount of glucose and NADP+ present in vivo.
Low-level lasers working at 633 or 670 nm and emitting extremely low power densities (Ultra Low Level Lasers - ULLL) exert an overall effect of photobiostimulation on cellular metabolism and energy balance.
We also studied whether stable low level expression of R88-A3G in CD4+ T cells exerts a similarly potent anti-HIV activity.
If an agent were disposed to exert greater effort if necessary, we would, I think, attach less significance to the low level of effort that was actually expended.
The low level of tetR is a manifestation of the leaky repression exerted on the P lac promoter by the lacI protein.
Early studies on cAMP levels in cells containing low level constitutive activity of PKA provide compelling evidence that PKA exerts a strong negative feedback on cAMP levels and implicated Pde's in that feedback (Nikawa et al. 1987).
The suggestion that acupuncture exerts its effects through peripheral neural blockade is supported by recent evidence explaining related techniques including low level laser and capsaicin at acupoints.
Glasgow Queen St (Low Level) - Cumbernauld.
