Pair Mass 1 Mass 2 Amino Acid Total Matching Residue Matching Residue Mass
Gly-Gly (G-G) 57 57 114 Asn (N) 114
Gly-Ala (G-A) 57 71 128 Gln (Q) or 128
Gly-Ala (G-A) 57 71 128 Lys (K) 128
Gly-Val (G-V) 57 99 156 Arg (R) 156
Gly-Glu (G-E) 57 129 186 Trp (W) 186
Ala-Asp (A-D) 71 115 186 Trp (W) 186
Ser-Val (S-V) 87 99 186 Trp (W) 186
AcGly (AcG)     99 Val (V) 99
AcAla (AcA)     113 Lxx (X) or 113
AcAla (AcA)     113 IIe (I) or 113
AcAla (AcA)     113 Leu (L) 113
AcSer (AcS)     129 Glu (E) 129
AcAsn (AcN)     156 Arg (R) 156

Ac = Acetyl