Which of the following is a basic amino acid?

1 2020 BiomoleculesProteins – Amino Acids Easy
Which of the following is a basic amino acid?
A Alanine
B Tyrosine
C Lysine
D Serine

Detailed Solution

Lysine, $H_2N-(CH_2)_4-CH(NH_2)-COOH$, has an extra amino group in its side chain, so it is a basic amino acid. Alanine, tyrosine and serine are neutral amino acids.

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