Alternative Forms of DNA Flashcards
1
Q
B-DNA
A
Right-hand helix
Main form of DNA
2
Q
Z-DNA
A
Left-handed Helix
Longer and thinner
zig-zag pattern of its backbone
3
Q
When do Z-DNA arise and where?
A
in regions of DNA that contain alternating purines and pyrimidines and cytosines with extra methyl groups
4
Q
Grooves play what role?
A
plays a role in the interaction with other molecules
5
Q
Grooves are determined by what?
A
determined by the way the two strands are twisted around each other
6
Q
what are major grooves?
A
generally the site of direct information readout
7
Q
what are minor grooves?
A
important target for a few regulatory and structural proteins
