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Amino Acids

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Miguel Amezola edited this page Sep 26, 2016 · 7 revisions

Each amino acid has the same generic structure. The R group is what differentiates them. The alpha carbon in the backbone is also known as a chiral carbon. Chiral carbons has four unique groups bound to it. In amino acids, the chiral cardon has the amino group, carboxylic acid group, a hydrogen atom, and the R group are bound to it. Amino acids can be grouped together based on the chemical properties of their R groups.

R group properties

  • Charge
  • H bonding ability
  • Acidic vs base

Classification

Non-polar, hydrophobic

Alkyl

glycine

The only amino acid that does not have a chiral carbon.

alanine

valine

methionine

leucine

isoleucine

proline

Aromatic

phenylalanine

tryptophan

Polar, hydrophilic

Neutral

serine

threonine

aspartate or asparagine

glutamine

cystine

tyrosine

Acidic

aspartate

glutamate

Basic

histidine

lysine

arginine

Unknown

asparagine

selenocysteine

glutamate or glutamine

References

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  12. Heunen, Christiaan Johan Marie., Mehrnoosh Sadrzadeh, and Edward Grefenstette. Quantum Physics and Linguistics: A Compositional, Diagrammatic Discourse. Oxford, United Kingdom: Oxford UP, 2013. Print.

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