Table I

List of monoisotopic/nominal mass ratios used for establishing a window in which all peptide molecular masses will appear

Highest values reached for isoleucine/leucine and smallest values for cysteine are shown in bold and underlined.

Amino acidMolecular massRatio monoisotopic/nominal mass
MonoisotopicNominal
Da
Ala71.03711711.000522676
Arg156.101111561.000648141
Asn114.042931141.000376578
Asp115.026941151.000234260
Cys103.00919103 1.000089223
Glu129.042591291.000330155
Gln128.058581281.000457656
Gly57.02146571.000376491
His137.058911371.000430000
Ile113.08406113 1.000743893
Leu113.08406113 1.000743893
Lys128.094961281.000741875
Met131.040491311.000309083
Phe147.068411471.000465374
Pro97.05276971.000543917
Ser87.03203871.000368160
Thr101.047681011.000472079
Trp186.079311861.000426397
Tyr163.063331631.000388527
Val99.06841991.000691010