name,AAA,A,pK
alanine,Ala,A,
cysteine,Cys,C,8.28
aspartate,Asp,D,3.9
glutamate,Glu,E,4.3
phenylalanine,Phe,F,
glycine,Gly,G,
histidine,HIs,H,6.08
isoleucine,Ile,I,
lysine,Lys,K,10.5
leucine,Leu,L,
methionine,Met,M,
asparagine,Asn,N,
proline,Pro,P,
glutamine,Gln,Q,
arginine,Arg,R,12
serine,Ser,S,
threonine,Thr,T,
valine,Val,V,
tryptophan,Trp,W,
tyrosine,Tyr,Y,10.1