Nitrogenous Bases, Nonpolar Amino Acids, and Charged Amino Acids

Adenine (A)

guanine (G)

thymine (T)

cytosine (C)

Uracil (U)

alanine (ala) (a)

on the slides there was an NH3+ group instead of NH2 and an O- instead of an OH

isoleucine (ile) (i)

on the slides there was an NH3+ group instead of NH2 and an O- instead of an OH

leucine (leu) (L)

on the slides there was an NH3+ group instead of NH2 and an O- instead of an OH

valine (val) (V)

on the slides there was an NH3+ group instead of NH2 and an O- instead of an OH

methionine (met) (M)

on the slides there was an NH3+ group instead of NH2 and an O- instead of an OH

phenylalanine (phe) (f)

on the slides there was an NH3+ group instead of NH2 and an O- instead of an OH

tryptophan (trp) (W)

on the slides there was an NH3+ group instead of NH2 and an O- instead of an OH

glycine (gly) (G)

on the slides there was an NH3+ group instead of NH2 and an O- instead of an OH

proline (pro) (P)

on the slides there was an NH2+ group instead of NH and an O- instead of an OH

Aspartate (asp) (D)

on the slides, the H that is bonded to the O is bonded to the N to make H3N+ and COO-

glutamate (glu) (E)

Which amino acids are acidic?

glutamate and aspartate

Histidine (his) (H)

lysine (lys) (K)

arginine (arg) (R)

on the slides, the NH with the double bond is NH2+ (keeps the double bond). The NH2 next to the carboxyl group is an NH3+. The OH is an O-

Which amino acids are basic?

histidine, lysine, arginine

What amino acids are nonpolar?

valine, leucine, isoleucine, alanine, tryptophan, proline, phenylaniline, glycine, methionine