Lecture 11 Flashcards
Which type of amino acid side chains can from ionic bonds?
Acidic and basic
The side chain of the amino acid phenylaline can best be described as which of the following?
Hydrophobic
what type of bond(s) phenylaline can form with other amino acid side chains.
Ionic
Which type of proteins will have quaternary structures?
Only proteins that associate with other proteins/subunits
Alpha helices are part of which protein structure?
Secondary
Which amino acids can be phosphorylated?
Only amino acids with a terminal -OH group
If a kinase enzyme phosphorylates a protein, what effect on function do you expect?
Either an increase or a decrease in the protein’s activity
Which amino acid group is hydrophobic? Which ones are hydrophilic?
Polar group is hydrophilic, noploar is hydrophobic, and change group is hydrophilic
What kinds of bonds can R groups
from hydrophobic amino acids make
with other R groups?
None of the above
Which types of amino acid R group(s) can form ionic bonds?
Acidic and basic
What is secondary level of protein structure?
folded amino acids can produce two types of
secondary structure that occur due to H bonds with the
protein backbone
What is the third level of protein structure?
tertiary structure = secondary + other folding R group interactions important to folding
Where would you expect to find hydrophobic amino acids?
Portion of transmembrane protein that is inside the membrane
How many subunits does quaternary structure?
Two or more subunits
Which type of modification requires energy and an enzyme to remove?
Covalent modification
