GTP-binding proteins in a cyanobacterium Anabaenacylindrica
Copyright policy )GTP-binding proteins in a cyanobacterium Anabaenacylindrica
GTP-binding proteins were detected in a crude extract containing membrane components of Anabaena cylindrica. The crude extract was treated with 1% Lubrol PX and was fractionated by gel filtration. The binding of [35S]GTP gamma S to GTP-binding proteins was prevented in the presence of 0.1 mM GTP and in the presence of 0.1 mM ATP. Six fractions of these GTP-binding proteins, tentatively designated GA1 to GA6, were ADP-ribosylated by pertussis toxin. GA3, GA4 and GA5 had Km values of 10, 60 and 7 nM, respectively. The molecular weights of some of these GTP-binding proteins were reduced after being labelled with [35S]GTP gamma S.
GTP-Binding Proteins, Guanosine 5'-O-(3-Thiotriphosphate), Cell Membrane, Chromatography, Gel, Guanosine Triphosphate, Thionucleotides, Cyanobacteria, Binding, Competitive
GTP-Binding Proteins, Guanosine 5'-O-(3-Thiotriphosphate), Cell Membrane, Chromatography, Gel, Guanosine Triphosphate, Thionucleotides, Cyanobacteria, Binding, Competitive
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