turbidity , electron microscopy , and nucleotide binding and hydrolysis were used to analyze the effect of the mg2+ concentration on gtp gamma s-induced assembly of microtubule protein ( tubulin + microtubule-associated proteins ) in the presence of buffer +/- 30 % glycerol and in buffer with gtp added before or after gtp gamma s .
C0018353
gtp
C0079469
gtp gamma s