Table 2.
Theoretical and Experimental Masses of Postsource Decay Peaksa
| peak | theoretical mass | experimental mass | sequence |
|---|---|---|---|
| y1 | 175.1190 | 175.2 | R |
| y2 | 272.1717 | 272.1 | RP |
| y3 | 373.2194I | 373.1 | RPT |
| y4 | 486.3035 | 486.2 | RPTI |
| y′5 | 569.3406 | 569.2 | RPTIDhb |
| y′6 | 640.3777 | 640.4 | RPTIDhbA |
| y′7 | 697.991 | 697.4 | RPTIDhbAG |
| y′8 | 798.4468 | 798.5 | RPTIDhbAGT |
| y′9 | 945.5152 | 945.5 | RPTIDhbAGTF |
| y′10 | 1073.5738 | 1073.6 | RPTIDhbAGTFQ |
| y′12 | 1335.6692 | 1335.7 | RPTIDhbAGTFQDF |
| y′15 | 1577.7707 | 1577.8 | RPTIDhbAGTFQDFQGG |
a
Dhb: dephosphorylated and dehydrated threonine.