Title : Determination of the activation volume of PLCbeta by Gbeta gamma-subunits through the use of high hydrostatic pressure.

Pub. Date : 2005 Apr

PMID : 15665133






2 Functional Relationships(s)
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1 Activation of phospholipase Cbeta (PLCbeta) by G-proteins results in increased intracellular Ca(2+) and activation of protein kinase C. We have previously found that activated PLCbeta-Gbetagamma complex can be rapidly deactivated by Galpha(GDP) subunits without dissociation, which led to the suggestion that Galpha(GDP) binds to PLCbeta-Gbeta gamma and perturbs the activating interaction without significantly affecting the PLCbeta-Gbeta gamma binding energy. Guanosine Diphosphate succinate-CoA ligase GDP/ADP-forming subunit alpha Homo sapiens
2 In the presence of Galpha(s)(GDP), the volume change associated with PLCbeta-Gbeta gamma interaction is reduced to 25 +/- 1 ml/mol. Guanosine Diphosphate succinate-CoA ligase GDP/ADP-forming subunit alpha Homo sapiens