Title : Role of the C-terminal region of smg p21, a ras p21-like small GTP-binding protein, in membrane and smg p21 GDP/GTP exchange protein interactions.

Pub. Date : 1991 Feb 15

PMID : 1899665






10 Functional Relationships(s)
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1 Role of the C-terminal region of smg p21, a ras p21-like small GTP-binding protein, in membrane and smg p21 GDP/GTP exchange protein interactions. Guanosine Triphosphate H3 histone pseudogene 16 Homo sapiens
2 Role of the C-terminal region of smg p21, a ras p21-like small GTP-binding protein, in membrane and smg p21 GDP/GTP exchange protein interactions. Guanosine Triphosphate H3 histone pseudogene 16 Homo sapiens
3 Role of the C-terminal region of smg p21, a ras p21-like small GTP-binding protein, in membrane and smg p21 GDP/GTP exchange protein interactions. Guanosine Triphosphate H3 histone pseudogene 16 Homo sapiens
4 Role of the C-terminal region of smg p21, a ras p21-like small GTP-binding protein, in membrane and smg p21 GDP/GTP exchange protein interactions. Guanosine Triphosphate H3 histone pseudogene 16 Homo sapiens
5 Role of the C-terminal region of smg p21, a ras p21-like small GTP-binding protein, in membrane and smg p21 GDP/GTP exchange protein interactions. Guanosine Triphosphate H3 histone pseudogene 16 Homo sapiens
6 Role of the C-terminal region of smg p21, a ras p21-like small GTP-binding protein, in membrane and smg p21 GDP/GTP exchange protein interactions. Guanosine Triphosphate H3 histone pseudogene 16 Homo sapiens
7 Limited proteolysis with trypsin of smg p21B, a ras p21-like small GTP-binding protein having the same putative effector domain as ras p21s, produced the N-terminal fragment and the C-terminal tail of Lys-Lys-Ser-Ser-geranylgeranyl-Cys methyl ester. Guanosine Triphosphate H3 histone pseudogene 16 Homo sapiens
8 In contrast, a GDP/GTP exchange protein for smg p21, named GDP dissociation stimulator, stimulated the GDP/GTP exchange reaction of the intact smg p21B but not that of the N-terminal fragment. Guanosine Triphosphate H3 histone pseudogene 16 Homo sapiens
9 In contrast, a GDP/GTP exchange protein for smg p21, named GDP dissociation stimulator, stimulated the GDP/GTP exchange reaction of the intact smg p21B but not that of the N-terminal fragment. Guanosine Triphosphate H3 histone pseudogene 16 Homo sapiens
10 These results indicate 1) that smg p21B is composed of at least two functionally different domains, the N-terminal GDP/GTP-binding and GTPase domain and the C-terminal membrane-binding domain, 2) that smg p21B binds to membranes through its C-terminal hydrophobic and basic domain, and 3) that this C-terminal domain is also essential for the smg p21 GDP dissociation stimulator action but not for the smg p21 GTPase-activating protein action. Guanosine Triphosphate H3 histone pseudogene 16 Homo sapiens