Which of the following is correct structure of tyrosine?

Question

Canvas Classes · Accepted Answer

Structure of Tyrosine (Tyr, Y):

Tyrosine is an aromatic -amino acid with a para-hydroxyphenyl (4-hydroxybenzyl) side chain.

Correct structure:

Key features:
- –OH at para position of the benzene ring (not meta or ortho)
- –CH₂– (one methylene group) connecting the ring to the -carbon
- -amino group (–NH₂) and carboxyl group (–COOH) on the -carbon

Why not other options:
- Option (1): Long chain (–CH₂CH₂CH₂–) — incorrect, tyrosine has only –CH₂–
- Option (2): meta-OH — incorrect, tyrosine has

More questions from Biomolecules