Methionine
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Amino Acids
- Serine
- Asparagine
- Alanine
- Valine
- Leucine
- Isoleucine
- Phenylalanine
- Tryptophan
- Methionine
- Proline
- Glycine
- Threonine
- Cysteine
- Tyrosine
- Glutamine
- Aspartate
- Glutamate
- Histidine
- Lysine
- Arginine
Summary
Methionine, which abbreviates to the 3-letter Met or single letter M, is one of the 20 amino acids that make up proteins in our body. Methionine’s R-group consists of a long hydrocarbon chain with a sulfur in the middle! Due to the composition of this R-group, methionine is also a non-polar, hydrophobic amino acid, with a neutral charge at physiological pH.
Key Points
- Methionine
- Abbreviations
- Met, M
- Chemical Structure
- R-group: CH2-CH2-S-CH3
- Contrast vs. Cysteine
- Polarity
- Non-polar (lipid soluble/hydrophobic)
- Charge at pH 7
- Neutral (0)
- Other Information
- Part of tRNA initiation complex
- Abbreviations
