Aminoacyl transfer RNA formation. I. Absence of pyrophosphate-ATP exchange in aminoacyl-tRNA formation stimulated by polyamines.

Adenosine Triphosphate Amino Acids Amino Acyl-tRNA Synthetases/isolation & purification Carbon Isotopes Catalysis Chromatography Chromatography, DEAE-Cellulose Diphosphates Enzyme Activation Escherichia coli/enzymology Hydroxyapatites Isoleucine Kinetics Magnesium Phosphorus Isotopes Polyamines Putrescine RNA, Transfer Spermine

Amino Acids Carbon Isotopes Diphosphates Hydroxyapatites Phosphorus Isotopes Polyamines Isoleucine Spermine Adenosine Triphosphate RNA, Transfer Amino Acyl-tRNA Synthetases Magnesium Putrescine