Biochemistry I What is the difference between an apo and holoprotein Apo = protein part of an enzyme without its characteristic prosthetic group (cofactor is not bound) Holo = apoprotein with its prosthetic group (cofactor bound) Many amino acids exist as what isomer? L Most alpha amino acids are _____, expect for glycine. All amino acids have ______ unique to itself. Chiral, R-group/4th substituent When naming an amino acid using biochemical designation, what carbon do you start numbering at? At the alpha carbon (one after the COO- group) What is the structure, 1 letter abbreviation, and 3 letter abbreviation for: Glycine? Glycine: G, Gly What is the structure, 1 letter abbreviation, and 3 letter abbreviation for: Alanine? Alanine: A, Ala What is the structure, 1 letter abbreviation, and 3 letter abbreviation for: Proline? Proline: P, Pro What is the structure, 1 letter abbreviation, and 3 letter abbreviation for: Valine? Valine: V, Val What is the structure, 1 letter abbreviation, and 3 letter abbreviation for: Leucine? Leucine: L, Leu