Amino Acid Identification

Name:

Abbreviation:

Classification:

Leucine

Leu

non-polar

Name:

Abbreviation:

Classification:

Proline

Pro

non-polar

Name:

Abbreviation:

Classification:

Alanine

Ala

non-polar

Name:

Abbreviation:

Classification:

Valine

Val

non-polar

Name:

Abbreviation:

Classification:

Methionine

Met

non-polar

Name:

Abbreviation:

Classification:

Tryptophan

Trp

non-polar (N makes that atom slightly polar)

Name:

Abbreviation:

Classification:

Phenylalanine

Phe

non-polar

Name:

Abbreviation:

Classification:

Isoleucine

Ile

non-polar

Name:

Abbreviation:

Classification:

Glycine

Gly

polar, uncharged

Name:

Abbreviation:

Classification:

Serine

Ser

polar, uncharged

Name:

Abbreviation:

Classification:

Asparagine

Asn

polar, uncharged

Name:

Abbreviation:

Classification:

Glutamine

Gln

polar, uncharged

Name:

Abbreviation:

Classification:

Threonine

Thr

polar, uncharged

Name:

Abbreviation:

Classification:

Cysteine

Cys

polar, uncharged

Name:

Abbreviation:

Classification:

Tyrosine

Tyr

polar, uncharged

Name:

Abbreviation:

Classification:

Aspartic Acid

Asp

acidic

Name:

Abbreviation:

Classification:

Glutamic Acid

Glu

acidic

Name:

Abbreviation:

Classification:

Lysine

Lys

basic

Name:

Abbreviation:

Classification:

Arginine

Arg

basic

Name:

Abbreviation:

Classification:

Histidine

His

Basic

Which amino acid is technically an “imino acid”?

proline - has a secondary amine (bound to two C’s vs. only one)

Ala:

Alanine (nonpolar)

Val:

Valine (nonpolar)

Leu:

Leucine (nonpolar)

Ile:

Isoleucine (nonpolar)

Pro:

Proline (nonpolar)

Phe:

Phenylalanine (nonpolar)

Trp:

Tryptophan (nonpolar)

Met:

Methionine (nonpolar)

Ser:

Serine (neutral polar)

Thr:

Threonine (neutral polar)

Tys:

Tyrosine (neutral polar)

Cys:

Cysteine (neutral polar)

Gln:

Glutamine (neutral polar)

Asn:

Asparagine (neutral polar)

Asp:

Aspartic Acid (acidic, - charged @ neutral pH)

Glu:

Glutamic Acid (acidic, - charged @ neutral pH)

Lys:

Lysine (basic, + charged @ neutral pH)

Arg:

Arginine (basic, + charged @ neutral pH)

His:

Histidine (basic, + charged @ neutral pH)

Which is the only achiral amino acid?

Glycine (two H groups)

pK of C-terminus:

3.5

pK of Asp:

3.9

pK of Glu:

4.1

pK of His:

6.0

pK of Cys:

8.4

pK of N-terminus:

9.0

pK of Tyr:

10.5

pK of Lys:

10.5

pK of Arg:

12.5

What are the essential amino acids?

PVT TIM HALL

Phenylalanine, Valine, Tryptophan, Threonine, Isoleucine, Methionine, Histidine, Arginine, Leucine, and Lysine