the number of moles of guanine nucleotides ( denoted gxp ) , either guanosine 5'-triphosphate ( gtp ) or guanosine 5'-diphosphate ( gdp ) , bound to a mole of phosphocellulose-purified tubulin after gel filtration into a variety of nucleotide-free buffers has been measured ( h. b. croom , j. j. correia , and r. c. williams , jr. , unpublished results ) .
C0018328
guanine nucleotides
C0018353
guanosine