Please I need help with these questions
1. The word "quaternary" structure refers to which case of "4"?
a)the 4th residue in the sequence just those proteins with 4 total subunits, such as hemoglobin
b)proteins with any number of multiple subunits, regardless of the total number (2, 3, 4, 5, ...)
c) the number of residues per turn in an alpha helix (3.6 rounded off to the closest integer, which is 4)
d)the number of residues (4 total) needed to make a beta turn
2. The Ramachandran plot depicts which of the following?
a.sterically permitted rotational (dihedral) angles along the backbone chain
b.the polar and nonpolar sides of helices, using circular graph paper
c.the cysteine pairing pattern in a protein having several disulfide bonds
3. The "level" of protein structure involving repetition of a particular choice of phi and psi angles is which of the following?
a. primary structure
b. secondary structure
c. tertiary structure
d. quaternary structure
Please I need help with these questions
1. The word "quaternary" structure refers to which case of "4"?
a)the 4th residue in the sequence just those proteins with 4 total subunits, such as hemoglobin
b)proteins with any number of multiple subunits, regardless of the total number (2, 3, 4, 5, ...)
c) the number of residues per turn in an alpha helix (3.6 rounded off to the closest integer, which is 4)
d)the number of residues (4 total) needed to make a beta turn
2. The Ramachandran plot depicts which of the following?
a.sterically permitted rotational (dihedral) angles along the backbone chain
b.the polar and nonpolar sides of helices, using circular graph paper
c.the cysteine pairing pattern in a protein having several disulfide bonds
3. The "level" of protein structure involving repetition of a particular choice of phi and psi angles is which of the following?
a. primary structure
b. secondary structure
c. tertiary structure
d. quaternary structure
