From: The association of plasma cystatin C proteoforms with diabetic chronic kidney disease
Theoretical m/z | Observed m/z | Proteoform | Label |
---|---|---|---|
13,071.833 | 13,072.684 | Cystatin C lacking N-terminal tripeptide (SSP-) | des-SSP CysC |
13,256.027 | 13,256.897 | Cystatin C lacking one N-terminal serine residue (S-) | des-S CysC |
13,272.027 | 13,272.649 | Hydroxylated cystatin C (on 3-Pro residue) lacking N-terminal S-residuea | des-S 3Pro-OH CysC |
13,343.105 | 13,344.169 | Full length, unmodified cystatin C | native CysC |
13,359.105 | 13,359.246 | Hydroxylated cystatin C in position 3 on proline (Pro) residuea | 3Pro-OH CysC |
18,276.162 | 18,276.500 | Beta lactoglobulin (internal reference standard) | BL |