Amino Acids (Standard) Flashcards
It is an amino acid that contains one amino group, one carboxyl group, and a nonpolar side chain.
Hydrophobic (“water-fearing”)
Nonpolar amino acid
Nonpolar amino acids:
Glycine (Gly, G)
Alanine (Ala, A)
Valine (Val, V)
Leucine (Leu, L)
Isoleucine (Ile, I)
Proline (Pro, P)
Phenylalanine (Phe, F)
Methionine (Met, M)
Tryptophan (Trp, W)
It is an amino acid that contains one amino group, one carboxyl group, and a side chain that is polar but neutral.
In solution at physiological pH, the side chain of a polar neutral amino acid is neither acidic nor basic
Polar neutral amino acid
Polar neutral amino acid
Serine (Ser, S)
Cysteine (Cys, C)
Threonine (Thr, T)
Asparagine (Asn, N)
Glutamine (Gln, Q)
Tyrosine (Tyr, Y)
It is an amino acid that contains one amino group and two carboxyl groups, the second carboxyl group being part of the side chain.
In solution at physiological pH, the side chain of a polar acidic amino acid bears a negative charge; the side-chain carboxyl group has lost its acidic hydrogen atom.
Polar Acidic Amino Acids
Polar Acidic Amino Acids
Aspartic acid (Asp, D)
Glutamic acid (Glu, E)
It is an amino acid that contains two amino groups and one carboxyl group, the second amino group being part of the side chain.
In solution at physiological pH, the side chain of a polar basic amino acid bears a positive charge; the nitrogen atom of the amino group has accepted a proton.
Polar Basic Amino Acids
Polar Basic Amino Acids
Histidine (His, H)
Lysine (Lys, K)
Arginine (Arg, R)
It is an amino acid needed in the human body that must be obtained from dietary sources because it cannot be synthesized within the body from other substances in adequate amounts
Essential amino acid
Essential amino acids
arginine methionine histidine phenylalanine isoleucine threonine leucine tryptophan lysine valine
