Structure
Which Amino Acid has a side chain (R group) of CH3
Alanine
How many amino acids are there?
20
Is Glutamine hydrophobic or hydrophilic?
Hydrophilic
Peptide Bond
Which Amino Acid is the start of all peptides?
Methionine
Which Amino Acid is achiral?
Glycine
Are most amino acids nonpolar or polar?
Polar
Is Methionine hydrophobic or hydrophilic?
Hydrophobic
Is Glycine typically found in alpha helices or beta sheets?
Beta sheets
Which Amino Acid creates an excitatory neurotransmitter in the CNS
Glutamic Acid
Which 2 Amino Acids are isomers?
Leucine, Isoleucine
What charge do basic amino acids have?
+
What are the 3 branched nonpolar Amino Acids?
Valine, Isoleucine, Leucine
What level of structure are disulfide bridges formed in?
Tertiary
Which Amino Acid is a precursor to serotonin and melatonin?
Tryptophan
Which Amino Acid has an imidazole side chain (R group)?
Histidine
Which Amino Acids have side chains that tend to gain/lose Hs?
Cysteine, Tyrosine, Aspartic Acid, Glutamic Acid, Lysine, Arginine, Histidine
Which Amino Acid side chain is connected to its N terminus?
Proline
Excluding the R group, what is the chemical formula of an Amino Acid?
C2H4O2
Which 3 Amino Acids form Glutathione?
Glycine, Glutamine, Cysteine
Which Amino Acid has an Indole side chain (R group)?
Tryptophan
Which letters in the alphabet are not amino acid 1 letter codes?
BJOUXZ
What differentiates essential and nonessential Amino Acids?
What type of angles are in Alpha helices?
Acute (25-80 degrees)
What is the difference between Cystine and Cysteine
Cystine = dimer (2 Cysteines)
Cysteine is the Amino Acid