Gcn4

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Function

Gcn4 or General control protein Gcn4 is a yeast transcriptional activator. It belongs to a large family of eukaryotic transcription factors including Fos, Jun and CREB. [1] Gcn4-pLI is a 33-residue peptide of the dimerization domain of Gcn4. See also Intrinsically Disordered Protein.

Structural highlights

Gcn4 and other family members have a DNA recognition motif consisting of a coiled-coil dimerization element, the leucine-zipper, and an adjoining basic region, which mediates DNA binding. This basic region is largely unstructured in the absence of DNA, addition of DNA containing a Gcn4 binding site induces the transition of this region from unstructured to α-helical.

See Coiled coil.

3D Structures of Gcn4

Gcn4 3D Structures


Structure of Gcn4 leucine zipper domain complex with DNA (PDB entry 2dgc)

Drag the structure with the mouse to rotate

References

  1. Hinnebusch AG. Gene-specific translational control of the yeast GCN4 gene by phosphorylation of eukaryotic initiation factor 2. Mol Microbiol. 1993 Oct;10(2):215-23. PMID:7934812

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