1.
orice peptida are un capat terminal NH2 si un capat terminal COOH
deci pt. AA monoaminomonocarboxilici = 2, cei din capetele peptidei
pt. AA diaminomonocarboxilici = 10 (9 diaminicimonocarb. + 1 monoaminimonocarb.)
pt. AA monoaminodicarboxilici = 24 (23 monoaminodicarb. + 1 monoaminimonocarb.)
2.
C-OH
I
C¹-OH
I
C²-OH
I
C³-OH
I
C-OH
avem 3 centre de chiralitate => 2³ = 8 enantiomeri teoretici