نتایج جستجو برای: subunit g

تعداد نتایج: 521741  

Journal: :Current Biology 2001
Jiaxin Niu Rita Vaiskunaite Nobuchika Suzuki Tohru Kozasa Daniel W. Carr Nickolai Dulin Tatyana A. Voyno-Yasenetskaya

Heterotrimeric G proteins and protein kinase A (PKA) are two important transmitters that transfer signals from a wide variety of cell surface receptors to generate physiological responses. The established mechanism of PKA activation involves the activation of the Gs-cAMP pathway. Binding of cAMP to the regulatory subunit of PKA (rPKA) leads to a release and subsequent activation of a catalytic ...

Journal: :The Journal of biological chemistry 2000
S Swift P J Sheridan L Covic A Kuliopulos

Signal transfer between the protease-activated PAR1 thrombin receptor and membrane-associated heterotrimeric G proteins is mediated by protein-protein interactions. We constructed a yeast signaling system that resolves domain-specific functions of binding from coupling in the Galpha subunit. The endogenous yeast Galpha subunit, Gpa1, does not bind to PAR1 and served as a null structural templat...

Journal: :Blood 1997
H Niessen G W Meisenholder H L Li S L Gluck B S Lee B Bowman R L Engler B M Babior R A Gottlieb

We have previously shown that granulocyte colony-stimulating factor (G-CSF ) delays spontaneous neutrophil apoptosis through activation of the vacuolar proton ATPase (v-ATPase). We have now examined the regulation of the v-ATPase in neutrophils exposed to G-CSF in vitro. When neutrophils were cultivated in the absence of G-CSF, the 57-kD cytosolic B subunit of the v-ATPase disappeared within 1 ...

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