Sandbox Reserved 1302

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Contents

Zinc-finger 1

Here is a view of the 1zaa structure

Drag the structure with the mouse to rotate

Origin

Zinc fingers were first identified in a study of transcription in the African clawed frog, Xenopus laevis in the laboratory of Aaron Klug.


Structure

The “finger” refers to the secondary structures ( 

and β-sheet) that are held together by the .

Function

This small protein motif is a transcriptional regulator. It recognizes and binds to the DNA sequence 5'-CGCCCCCGC-3'(EGR-site). Activates the transcription of target genes whose products are required for mitogenesis and differentiation. regulate eukaryotic gene expression


Interactions

The zinc-fingers usually interact with the outside of B-DNA. When interacting with DNA, the zinc fingers bind in the major groove of B-DNA and wrap part way around the double helix.

References

Zinc Fingers. (n.d.). Retrieved February 08, 2017, from http://www.ebi.ac.uk/interpro/potm/2007_3/Page2.htm

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