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Details

Biochem Objectives III
N/A
5
Other
Graduate
10/06/2009

Additional Other Flashcards

 


 

Cards

Term

List secondary structures of DNA binding proteins

"super secondary structures"

Definition

1. Helix-turn-helix

2. Helix-Loop-helix

3.Leucine Zipper

4. Zinc finger

Term

Describe what DNA binding proteins tend to have:

 

Definition

-2 fold axis of symmetry and often form dimers 

-very specific DNA binding via noncovalent interactions between amino acids and edges of nucleotide base pairs along the major groove

Term
Meselson-Stahl Experiment
Definition

-No longer stationary DNA

-DNA replication occurs in specific number or nucleoid compartments called replication factories- which are driven by energy pumps

Term
What are the basic steps in prokaryotic DNA synthesis
Definition

-Dna unwinding Helicases-ATP req enzyme that catalyze the unwinding of duplex DNA

 

-(SSB) Single stranded binding protein- protects single strand DNA segments

 

-Topoisomerases- work ahead of the replication form to relieve torque 

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