Sulfur-containing amino acid. Slightly polar, generally hydrophobic. A modified form of this amino acid acts as the initial residue in all prokaryotic proteins.

Formula: C5H11NO2S
Molecular Weight: 149.21
Three-letter code: Met
One-letter code: M
Three-letter code: Met
One-letter code: M

Methionine has the following structure:

    COOH
    |
H2N-C-H
    |
    CH2
    |
    CH2
    |
    S
    |
    CH3

Log in or registerto write something here or to contact authors.