Amino Acids Flashcards
20 amino acids found in peptides and proteins are what?
A-amino Acids
When a molecule has a (+) and (-) charge it is called a what?
Zwitterion
What is isoelectric point (pl)?
It is a pH at which the overall charge of an amino acid is neutral
All amino acids (except glycine) are?
Chiral
What is a D-amino acid?
They have amino group on right side when drawn as a Fisher projection
What is a L-amino Acids?
They have an amino group on the left
Glutamine is in which class of amino acid?
A) Nonpolar
B) Polar acidic
C) Polar basic
D) Polar neutral
Answer:D
What is a peptide bond?
Amidst bond joining two amino acids together
How many amino acids do proteins have?
Proteins can more than 50 amino acids
How many amino acids does oligopeptides have?
Oligopeptides contain 2 to 10 amino acids
How many amino acids does Polypeptides have?
Polypeptides have more than 10 amino acids
When drawing N-terminus what side is it on?
The left side
When drawing C-terminus what side is it on?
The right
True or false: Amink acid residues are listed in order from N- to C- terminus
True
True or false: both the snide and carboxylic acid portion of an amino acid are pH dependent
True