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Table 4 Peptide m/z matches obtained via the MSiMass list

From: Moving translational mass spectrometry imaging towards transparent and reproducible data analyses: a case study of an urothelial cancer cohort analyzed in the Galaxy framework

Tentative protein identity Tentative peptide sequence Measured m/za MSiMass list m/z Mass errora (ppm) In classifier condition
Collagen alpha-1(1) chain precursor GVVGLPGQR (hydroxylated) 898.51 898.48 33.40 Stroma
Histone 2A AGLQFPVGR 944.53 944.54 10.56 Tumor and infiltrating
Keratin, type 1 cytoskeletal 18 STFSTNYR 975.51 975.45 61.52 Non-infiltrating
Heat schock protein beta-1 RVPFSLLR 987.53 987.54 5.09 Tumor
Keratin, type 1 cytoskeletal 19 DAEAWFTSR 1082.59 1082.52 64.63 Non-infiltrating
Collagen alpha-1(1) chain precursor GVQGPPGPAGPR (hydroxylated) 1105.59 1105.58 13.54 Stroma and non-infiltrating
Keratin, type 1 cytoskeletal 17 or 19b TKFETEQALR 1222.64 1222.64 0.01 Non-infiltrating
Keratin, type 1 cytoskeletal 16 NHEEEMLALR 1241.70 1241.6 80.50 Stroma
Histone H4 DNIQGITKPAIR 1325.75 1325.72 18.85 Tumor and infiltrating
Glutathione S-transferase P PPYTVVYFPVR 1337.73 1337.7 22.41 Infiltrating
Keratin, type 2 cytoskeletal 7 SIHFSSPVFTSR Acetyl (Protein N-term) 1406.68 1406.71 24.85 Non-infiltrating
Keratin, type 2 cytoskeletal 6Ac ADTLTDEINFLR 1407.69 1407.71 14.25 Non-infiltrating
Vimentin SLYASSPGGVYATR 1428.71 1428.71 0.03 Infiltrating
Collagen alpha-1(1) chain precursor GSAGPPGATGFPGAGR (hydroxylated) 1459.69 1459.71 13.74 Stroma
Keratin, type 1 cytoskeletal 19 QSSATSSFGGLGGGSVR 1554.74 1554.75 6.44 Non-infiltrating
Collagen alpha-2(1) chain precursor GETGPSGPVGPAGAVGPR 1562.79 1562.8 6.37 Stroma
  1. aRounded two 2 decimals
  2. bSame peptide shared by two proteins
  3. cPotential isotope of the 1 m/z lighter m/z feature