Science Gateway > Protocols > Cell Biology Protocols - Table of Contents
Star Republic: Guide for Biologists

Molecular weight for amino acids

Code Symbol Name Composition Monoisotopic Residue Mass Avg. Residue Mass
AAlaAlanineC3H5NO71.0371171.0788
RArgArginineC6H12N4O156.10111156.18748
NAsnAsparagineC4H6N2O2114.04293114.10384
DAspAspartic acidC4H5NO3115.02694115.0886
CCysCysteineC3H5NOS103.00919103.1448
EGluGlutamic acidC5H7NO3129.04259129.11548
QGlnGlutamineC5H8N2O2128.05858128.13072
GGlyGlycineC2H3NO57.0214657.05192
HHisHistidineC6H7N3O137.05891137.14108
IIleIsoleucineC6H11NO113.08406113.15944
LLeuLeucineC6H11NO113.08406113.15944
KLysLysineC6H12N2O128.09496128.17408
MMetMethionineC5H9NOS131.04049131.19856
FPhePhenylalanineC9H9NO147.06841147.17656
PProProlineC5H7NO97.0527697.11668
SSerSerineC3H5NO287.0320387.0782
TThrThreonineC4H7NO2101.04768101.10508
WTrpTryptophanC11H10N2O186.07931186.2132
YTyrTyrosineC9H9NO2163.06333163.17596
VValValineC5H9NO99.0684199.13256

Name Composition Monoisotopic Residue Mass Avg. Residue Mass
Homoserine lactoneC4H5NO83.0371183.0898
HomoserineC4H7NO2101.04768101.10508
Pyroglutamic acidC5H5NO2111.03203111.1002
CarboxymethylcysteineC5H7NO3S161.01466161.18148
CarbamidomethylcysteineC5H8N2O2S160.03065160.19672
PyridylethylcysteineC10H12N21S1208.06703208.28408
OrnithineC5H10N2O114.07931114.1472
SarcosineC3H5NO71.0371171.0788

Monoisotopic Residue Mass: the mass calculated using the most abundant isotope for each element.