Flashcards
Amino Acids Flashcards
Cards in this deck (20)
- 1—Full Name: Glycine
3 letter code: Gly
1 Letter Code: G
-Simplest amino acid, nonpolar
- Side Chain = H = Hydrophobic R group - 2—Full Name: Alanine
3 letter code: Ala
1 Letter code: A
Side chain = Methyl group =
Hydrophobic R group
- 3—Full name: Phenylalanine
3 letter code: Phe
1 letter code: F
-includes a phenyl ring on an Ala residue
- Hydrophobic R group
- 4—Full name: Valine
3 letter code: Val
1 letter code: V
-hydrophobic R group
- 5—Full Name: Leucine
3 letter code: Leu
1 letter code: L
-has an extra methylene (-CH2-) group than Val
-has the same formula as Ile but arranged differently.
-Hydrophobic R group
- 6—Full name: Isoleucine
3 letter code: Ile
1 letter code: I
- has the same formula as Leu but arranged differently
-Hydrophobic R group
- 7—Full name: Methionine
3 letter code: Met
1 letter code: M
- 1 of 2 amino acids with sulfur in its R group
- Hydrophobic R group
- 8—Full Name: Tryptophan
3 letter code: Trp
1 letter code: W
- only amino acid with a fused ring system
-hydrophobic R group
-Absorbs UV light at 280nm (can use Beer's law)
- 9—Full name: Proline
3 letter code: Pro
1 letter code: P
- only amino acid whose side-chain loops back onto its backbone
--induces kinks in a polypeptide sequence
-Hydrophobic R group
- 10—Full name: Cysteine
3 letter code: Cys
1 letter code: C
-2 of 2 with sulfur in the side chain.
the Cys residues can form a disulfide bond
- disulfide bonds facilitate crosslinking
-Polar uncharged, hydrophilic R goup
- 11—Full name: Serine
3 letter code: Ser
1 letter code: S
- Has a hydroxyl group in the R, side chain
-(-OH-) groups are prominent nucleophiles in biochemical reactions
-Other proteins can covalently bond to proteins via -OH group
- Polar uncharged, Hydrophilic R, side group
- 12—Full name: Threonine
3 letter code: Thr
1 letter code: T
-Has a hydroxyl group in the R, side chain
-(-OH-) groups are prominent nucleophiles in biochemical reactions
-Other proteins can covalently bond to proteins via -OH group
- Polar uncharge, RHydrophilic R, Side group
- 13—Full name: Tyrosine
3 letter code: Tyr
1 letter code: Y
-a derivative of Phe; differs by an -OH group
-Phe and Tyr are precursors of amino acid derivative that are neurotransmitters
- Polar uncharged, hydrophilic R, side group
- 14—Full name: Asparagine
3 letter code: Asn
1 letter code: N
-Has 1 methylene groups
-polar uncharged, Hydrophilic R, Side group
- 15—Full name: Glutamine
3 letter code: Gln
1 letter code: Q
- has 2 methylene group
-polar uncharged, Hydrophilic R, side group
- 16—Full name: Histidine
3 letter code: His
1 letter code: H
-has a 5 membered ring system with N's.
-can be charged at certain (low pH) values
- 17—Full name: Lysine
3 letter code: Lys
1 letter code: K
- has a long side chain with a positively charged amine group
-hydrophilic R, side group
- 18—Full name: Arginine
3 letter code: Arg
1 letter code: R
- Long side chain with a positively charged amine group
- hydrophilic R, side group
- 19—Full name: Aspartate
3 letter code: Asp
1 letter code: D
- in the side chain there a carboxylate group
-negatively charged, hydrophilic R, side group
-analogous to Asn And Gln (both have amine groups)
- 20—Full name: Glutamate
3 letter code: Glu
1 letter code: E
in the side chain there a carboxylate group
-negatively charged, hydrophilic R, side group
-analogous to Asn And Gln (both have amine groups)
- has 1 more methylene than Asp.