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2erg
From Proteopedia
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| - | [[Image:2erg.gif|left|200px]] | + | [[Image:2erg.gif|left|200px]] |
| - | + | ||
| - | '''Crystal Structure of Leu3 DNA-binding domain with a single H50C mutation complexed with a 15mer DNA duplex''' | + | {{Structure |
| + | |PDB= 2erg |SIZE=350|CAPTION= <scene name='initialview01'>2erg</scene>, resolution 3.15Å | ||
| + | |SITE= | ||
| + | |LIGAND= <scene name='pdbligand=ZN:ZINC ION'>ZN</scene> | ||
| + | |ACTIVITY= | ||
| + | |GENE= LEU3 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=4932 Saccharomyces cerevisiae]) | ||
| + | }} | ||
| + | |||
| + | '''Crystal Structure of Leu3 DNA-binding domain with a single H50C mutation complexed with a 15mer DNA duplex''' | ||
| + | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
| - | 2ERG is a [ | + | 2ERG is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2ERG OCA]. |
==Reference== | ==Reference== | ||
| - | Structure of a Leu3-DNA complex: recognition of everted CGG half-sites by a Zn2Cys6 binuclear cluster protein., Fitzgerald MX, Rojas JR, Kim JM, Kohlhaw GB, Marmorstein R, Structure. 2006 Apr;14(4):725-35. PMID:[http:// | + | Structure of a Leu3-DNA complex: recognition of everted CGG half-sites by a Zn2Cys6 binuclear cluster protein., Fitzgerald MX, Rojas JR, Kim JM, Kohlhaw GB, Marmorstein R, Structure. 2006 Apr;14(4):725-35. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16615914 16615914] |
[[Category: Saccharomyces cerevisiae]] | [[Category: Saccharomyces cerevisiae]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
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[[Category: zn(2)cys(6) binuclear cluster motif]] | [[Category: zn(2)cys(6) binuclear cluster motif]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 16:43:32 2008'' |
Revision as of 14:43, 20 March 2008
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| , resolution 3.15Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | |||||||
| Gene: | LEU3 (Saccharomyces cerevisiae) | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
Crystal Structure of Leu3 DNA-binding domain with a single H50C mutation complexed with a 15mer DNA duplex
Overview
Gal4 is the prototypical Zn2Cys6 binuclear cluster transcriptional regulator that binds as a homodimer to DNA containing inverted CGG half-sites. Leu3, a member of this protein family, binds to everted (opposite polarity to inverted) CGG half-sites, and an H50C mutation within the Leu3 Zn2Cys6 binuclear motif abolishes its transcriptional repression function without impairing DNA binding. We report the X-ray crystal structures of DNA complexes with Leu3 and Leu3(H50C) and solution DNA binding studies of selected Leu3 mutant proteins. These studies reveal the molecular details of everted CGG half-site recognition, and suggest a role for the H50C mutation in transcriptional repression. Comparison with the Gal4-DNA complex shows an unexpected conservation in the DNA recognition mode of inverted and everted CGG half-sites, and points to a critical function of a linker region between the Zn2Cys6 binuclear cluster and dimerization regions in DNA binding specificity. Broader implications of these findings are discussed.
About this Structure
2ERG is a Single protein structure of sequence from Saccharomyces cerevisiae. Full crystallographic information is available from OCA.
Reference
Structure of a Leu3-DNA complex: recognition of everted CGG half-sites by a Zn2Cys6 binuclear cluster protein., Fitzgerald MX, Rojas JR, Kim JM, Kohlhaw GB, Marmorstein R, Structure. 2006 Apr;14(4):725-35. PMID:16615914
Page seeded by OCA on Thu Mar 20 16:43:32 2008
