Title : Protein kinase A phosphorylation of RhoA mediates the morphological and functional effects of cyclic AMP in cytotoxic lymphocytes.

Pub. Date : 1996 Feb 1

PMID : 8599934






8 Functional Relationships(s)
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1 We have observed that stimulation of human natural killer cells with dibutyryl cAMP (Bt2cAMP) reproduced the effects of ADP ribosylation of the GTP binding protein RhoA by Clostridium botulinum C3 transferase: both agents induced similar morphological changes, inhibited cell motility and blocked the cytolytic function. Guanosine Triphosphate ras homolog family member A Homo sapiens
2 Experiments using purified membrane preparations indicated that Rho-GDP dissociation inhibitor, which can complex phosphorylated RhoA in its GTP-bound state, was the effector of this translocation. Guanosine Triphosphate ras homolog family member A Homo sapiens
3 Taken together, these data suggest that PKA phosphorylation of RhoA is a central event in mediating the cellular effects of cAMP, and support the existence of an alternative pathway for terminating RhoA signalling whereby GTP-bound RhoA, when phosphorylated, could be separated from its putative effector(s) independently of its GTP/GDP cycling. Guanosine Triphosphate ras homolog family member A Homo sapiens
4 Taken together, these data suggest that PKA phosphorylation of RhoA is a central event in mediating the cellular effects of cAMP, and support the existence of an alternative pathway for terminating RhoA signalling whereby GTP-bound RhoA, when phosphorylated, could be separated from its putative effector(s) independently of its GTP/GDP cycling. Guanosine Triphosphate ras homolog family member A Homo sapiens
5 Taken together, these data suggest that PKA phosphorylation of RhoA is a central event in mediating the cellular effects of cAMP, and support the existence of an alternative pathway for terminating RhoA signalling whereby GTP-bound RhoA, when phosphorylated, could be separated from its putative effector(s) independently of its GTP/GDP cycling. Guanosine Triphosphate ras homolog family member A Homo sapiens
6 Taken together, these data suggest that PKA phosphorylation of RhoA is a central event in mediating the cellular effects of cAMP, and support the existence of an alternative pathway for terminating RhoA signalling whereby GTP-bound RhoA, when phosphorylated, could be separated from its putative effector(s) independently of its GTP/GDP cycling. Guanosine Triphosphate ras homolog family member A Homo sapiens
7 Taken together, these data suggest that PKA phosphorylation of RhoA is a central event in mediating the cellular effects of cAMP, and support the existence of an alternative pathway for terminating RhoA signalling whereby GTP-bound RhoA, when phosphorylated, could be separated from its putative effector(s) independently of its GTP/GDP cycling. Guanosine Triphosphate ras homolog family member A Homo sapiens
8 Taken together, these data suggest that PKA phosphorylation of RhoA is a central event in mediating the cellular effects of cAMP, and support the existence of an alternative pathway for terminating RhoA signalling whereby GTP-bound RhoA, when phosphorylated, could be separated from its putative effector(s) independently of its GTP/GDP cycling. Guanosine Triphosphate ras homolog family member A Homo sapiens