MCAT - Unit 1 - Amino Acids

None of the 20 amino acids have this side-chain

Thioester

The only amino acid that is not optically active

Glycine

Which amino acid does not have an S configuration?

Cysteine

These 2 amino acids are not in alpha helices

Glycine and Proline

These two amino acids can act phosphorylated

Aspartic acid and glutamic acid

These three amino acids are common targets of phosphorylation

Serine, Tyrosine, and threonine (the -ines)

This amino acid does not contain an aromatic ring

Proline

At physiological pH, what part of cellular amino acids are protonated?

The amino group

Disulphide linkages can impair which levels of protein structures?

Tertiary(3^o) and Quaternary (4^o)