Noun
The radical PO, regarded as the typical nucleus of certain compounds.
Source: Webster's dictionaryIn the final step of glycolysis, pyruvate kinase transfers a phosphoryl group from phosphoenolpyruvate to ADP, generating ATP and pyruvate. Source: Internet
Kinases properly orient their substrate and the phosphoryl group within their active sites, which increases the rate of the reaction. Source: Internet
The phosphoryl groups, starting with the group closest to the ribose, are referred to as the alpha (α), beta (β), and gamma (γ) phosphates. Source: Internet