Regulation of glutamine synthetase. VII. Adenylyl glutamine synthetase: a new form of the enzyme with altered regulatory and kinetic properties.

Analyses were performed on duplicate samples as described in Materials and Methods.t Nucleotide was determined from the difference spectrum between glutamine synthetases I and II, using the extinction coefficient for AMP at pH 7 for the calculation (15.0 X 103 per mole per cm).