POS Flashcards
1
Q
What is a DNA binding zinc finger motif?
There are three categories, what are their structures?
A
Transcription factor
A: alpha helix and beta pleated sheet held by Zn
B: 2 alpha helices held by 2 Zn
C just beta pleated sheets
2
Q
What is the leucine zipper motif and what is its structure?
A
Transcription factor
Two alpha helices bound by hydrophobic amino acid chains
Can be homodimers or heterodimers
3
Q
What is a helix loop helix and what is its structure?
A
Transcription factor
A short alpha helix and a long alpha helix bound by loops
4
Q
What is a helix turn helix motif and what is its structure?
A
Transcription factor
Two alpha helices linked by a short chain of amino acids
