1du7
From Proteopedia
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| - | [[Image:1du7.jpg|left|200px]] | + | [[Image:1du7.jpg|left|200px]] |
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| - | '''CRYSTAL STRUCTURE OF TET REPRESSOR CLASS D WITH 4-EPI-TETRACYCLINE''' | + | {{Structure |
| + | |PDB= 1du7 |SIZE=350|CAPTION= <scene name='initialview01'>1du7</scene>, resolution 2.51Å | ||
| + | |SITE= | ||
| + | |LIGAND= <scene name='pdbligand=CTC:7-CHLOROTETRACYCLINE'>CTC</scene> | ||
| + | |ACTIVITY= | ||
| + | |GENE= | ||
| + | }} | ||
| + | |||
| + | '''CRYSTAL STRUCTURE OF TET REPRESSOR CLASS D WITH 4-EPI-TETRACYCLINE''' | ||
| + | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
| - | 1DU7 is a [ | + | 1DU7 is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1DU7 OCA]. |
==Reference== | ==Reference== | ||
| - | Structural basis of gene regulation by the tetracycline inducible Tet repressor-operator system., Orth P, Schnappinger D, Hillen W, Saenger W, Hinrichs W, Nat Struct Biol. 2000 Mar;7(3):215-9. PMID:[http:// | + | Structural basis of gene regulation by the tetracycline inducible Tet repressor-operator system., Orth P, Schnappinger D, Hillen W, Saenger W, Hinrichs W, Nat Struct Biol. 2000 Mar;7(3):215-9. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/10700280 10700280] |
[[Category: Escherichia coli]] | [[Category: Escherichia coli]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
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[[Category: transcription regulation]] | [[Category: transcription regulation]] | ||
| - | ''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 10:44:30 2008'' |
Revision as of 08:44, 20 March 2008
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| , resolution 2.51Å | |||||||
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| Coordinates: | save as pdb, mmCIF, xml | ||||||
CRYSTAL STRUCTURE OF TET REPRESSOR CLASS D WITH 4-EPI-TETRACYCLINE
Overview
The tetracycline repressor (TetR) regulates the most abundant resistance mechanism against the antibiotic tetracycline in grain-negative bacteria. The TetR protein and its mutants are commonly used as control elements to regulate gene expression in higher eukaryotes. We present the crystal structure of the TetR homodimer in complex with its palindromic DNA operator at 2.5 A resolution. Comparison to the structure of TetR in complex with the inducer tetracycline-Mg2+ allows the mechanism of induction to be deduced. Inducer binding in the repressor core initiates conformational changes starting with C-terminal unwinding and shifting of the short helix a6 in each monomer. This forces a pendulum-like motion of helix a4, which increases the separation of the attached DNA binding domains by 3 A, abolishing the affinity of TetR for its operator DNA.
About this Structure
1DU7 is a Single protein structure of sequence from Escherichia coli. Full crystallographic information is available from OCA.
Reference
Structural basis of gene regulation by the tetracycline inducible Tet repressor-operator system., Orth P, Schnappinger D, Hillen W, Saenger W, Hinrichs W, Nat Struct Biol. 2000 Mar;7(3):215-9. PMID:10700280
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