Introduction to proteins Flashcards
1
Q
Are proteins directional?
A
YES
2
Q
monomers of proteins?
A
amino acids
3
Q
what are the subcomponents of amino acids?
A
carboxyl group, amino group (NH2), H, R group
4
Q
The r groups of proteins may be:
A
- Polar and form hydrogen bonds
- Charged and form ionic bonds
- Non polar/hydrophobic – aromatic (ring)/aliphatic
5
Q
how many amino acids in eukaryotes?
A
20
6
Q
How many essential amino acids?
A
9 (body can’t make so must be ingested)
7
Q
How are polypeptides formed?
A
Condensation polymerisation reaction (OH from carboxyl and H from amino form water, CN bond)
8
Q
WHen are disulphide bonds formed?
A
Between 2 amino acids containing S (ie. cysteine)
