Amino Acids

Amino AcidsThree-letterSingle-letterMolecular formulaMolecular WeightMass Spectrometry Molecular WeightPolarityAcidity or AlkalinityPI Value
AlanineAlaAC3H7NO289.0971.07NonpolarNeutral6.01
CysteineCysCC3H7NO2S121.16203.10Polarity is not chargedNeutral5.05
Aspartic acid AspDC4H7NO4133.10115.08Negatively charged polarityAcidic2.85
Glutamic acidGluEC5H9NO4147.13129.11Negatively charged polarityAcidic3.15
PhenylalaninePheFC9H11NO2165.19147.17NonpolarNeutral5.49
GlycineGlyGC2H5NO275.0757.05Polarity is not chargedNeutral6.06
HistidineHisHC6H9N3O2155.16137.14Positive polarityAlkaline7.60
IsolleucineIleIC6H13NO2131.17113.15NonpolarNeutral6.05
LysineLysKC6H14N2O2146.19128.17Positive polarityAlkaline9.60
LeucineLeuLC6H13NO2131.17113.15NonpolarNeutral6.01
MethionineMetMC5H11NO2S149.21131.19NonpolarNeutral5.74
AsparagineAsnNC4H8N2O3132.12114.10Polarity is not chargedNeutral5.41
ProlineProPC5H9NO2115.1397.11NonpolarNeutral6.30
GlutamineGlnQC5H10N2O3146.15128.13Polarity is not chargedNeutral5.65
ArginineArgRC6H14N4O2174.20156.18Positive polarityAlkaline10.76
SerineSerSC3H7NO3105.0987.07Polarity is not chargedNeutral5.68
ThreonineThrTC4H9NO3119.16101.14Polarity is not chargedNeutral5.60
ValineValVC5H11NO2117.1599.13NonpolarNeutral6.00
TryptophanTrpWC11H12N2O2204.22186.20NonpolarNeutral5.89
TyrosineTyrYC9H11NO3181.19163.17Polarity is not chargedNeutral5.64