The Examination of the Presence of Amide Groups in Glutamic Acid and Aspartic Acid Residues of Staphylococcal Nuclease (Foggi Strain)

The presence and absence of amide groups at 5 aspartic acid and 4 glutamic acid residues of the amino acid sequence of staphylococcal nuclease (Foggi strain) has been determined. These residues are glutamic acid 73, glutamic acid 75, aspartic acid 77, aspartic acid 83, glutamic acid 129, glutamine 131, asparagine 138, aspartic acid 143, asparagine 144, and aspartic acid 146. The previous studies and the present information establish the amino acid sequence of staphylococcal nuclease (Foggi strain). The molecular weight of nuclease Foggi is calculated to be 16,811.