Protein Kinases protein kinase 100 article 88 metabolism 66 nonhuman 60 enzymology 50 priority journal 50 Phosphorylation 38 genetics 38 Cyclic AMP 36 Molecular Sequence Data 32 Support, Non-U.S. Gov't 32 signal transduction 32 Signal Transduction 30 Amino Acid Sequence 26 growth, development and aging 26 Mucor 24 Plant Proteins 24 controlled study 22 cyclic amp 22 enzyme activity 22 unclassified drug 22 Kinetics 20 gene expression regulation 20 Molecular Weight 18 Solanum tuberosum 18 phosphorylation 18 Animals 16 Base Sequence 16 Centrifugation, Density Gradient 16