Title : A 50 KDa protein modulates guanine nucleotide binding of transglutaminase II.

Pub. Date : 1996 Feb 27

PMID : 8611570






6 Functional Relationships(s)
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1 Present immunological and biochemical studies on the regulation of the GTPase cycle of G alpha h, which involves the alpha 1-adrenoceptor and 50 KDa G beta h, reveal that the 50 kDa protein is indeed a G alpha h-associated protein and down regulates functions of G alpha h. Thus, polyclonal antibody against G Beta h coimmunoprecipitates GDP-bound G alpha h but not the GDP-AlF4--bound form. Guanosine Diphosphate succinate-CoA ligase GDP/ADP-forming subunit alpha Homo sapiens
2 Present immunological and biochemical studies on the regulation of the GTPase cycle of G alpha h, which involves the alpha 1-adrenoceptor and 50 KDa G beta h, reveal that the 50 kDa protein is indeed a G alpha h-associated protein and down regulates functions of G alpha h. Thus, polyclonal antibody against G Beta h coimmunoprecipitates GDP-bound G alpha h but not the GDP-AlF4--bound form. Guanosine Diphosphate succinate-CoA ligase GDP/ADP-forming subunit alpha Homo sapiens
3 Present immunological and biochemical studies on the regulation of the GTPase cycle of G alpha h, which involves the alpha 1-adrenoceptor and 50 KDa G beta h, reveal that the 50 kDa protein is indeed a G alpha h-associated protein and down regulates functions of G alpha h. Thus, polyclonal antibody against G Beta h coimmunoprecipitates GDP-bound G alpha h but not the GDP-AlF4--bound form. Guanosine Diphosphate succinate-CoA ligase GDP/ADP-forming subunit alpha Homo sapiens
4 Present immunological and biochemical studies on the regulation of the GTPase cycle of G alpha h, which involves the alpha 1-adrenoceptor and 50 KDa G beta h, reveal that the 50 kDa protein is indeed a G alpha h-associated protein and down regulates functions of G alpha h. Thus, polyclonal antibody against G Beta h coimmunoprecipitates GDP-bound G alpha h but not the GDP-AlF4--bound form. Guanosine Diphosphate succinate-CoA ligase GDP/ADP-forming subunit alpha Homo sapiens
5 Supporting this notion, G beta h accelerated GTP gamma S release from G alpha h and changes the affinity of G alpha h from GTP to GDP. Guanosine Diphosphate succinate-CoA ligase GDP/ADP-forming subunit alpha Homo sapiens
6 These findings clearly demonstrate that G alpha h associates with a novel protein which modulates the affinity of G alpha h for guanine nucleotides and that the GDP-bound Gh is the ground state for the counterpart activator, the alpha 1-adrenoceptor, in this signaling system. Guanosine Diphosphate succinate-CoA ligase GDP/ADP-forming subunit alpha Homo sapiens