. 2024 Feb 8;35(3):487–497. doi: 10.1021/jasms.3c00366

Table 3. Theoretical and Measured GP-rich Peptide Standard Masses^a.

Sequence	Theoretical monoisotopic mass	Measured mass	Measured mass error (ppm)
GPAGERGSP	827.401	827.401	0
GPAGERGSP*	843.396	843.394	2.4
GRPGEVGPP	865.453	865.454	–1.2
GRPGEVGPP	897.442	897.443	–1.1

Peptide standard sequence, theoretical monoisotopic mass, observed mass measured by timsTOF flex, and mass error in ppm. P* represents hydroxylated proline.

Table 3. Theoretical and Measured GP-rich Peptide Standard Massesa.

Table 3. Theoretical and Measured GP-rich Peptide Standard Masses^a.