2ho7: Difference between revisions
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[[Image:2ho7.gif|left|200px]] | [[Image:2ho7.gif|left|200px]] | ||
'''Pre-cleavage state of the Thermoanaerobacter tengcongensis glmS ribozyme bound to glucose-6-phosphate''' | {{Structure | ||
|PDB= 2ho7 |SIZE=350|CAPTION= <scene name='initialview01'>2ho7</scene>, resolution 2.90Å | |||
|SITE= | |||
|LIGAND= <scene name='pdbligand=G6P:ALPHA-D-GLUCOSE-6-PHOSPHATE'>G6P</scene> and <scene name='pdbligand=MG:MAGNESIUM ION'>MG</scene> | |||
|ACTIVITY= | |||
|GENE= | |||
}} | |||
'''Pre-cleavage state of the Thermoanaerobacter tengcongensis glmS ribozyme bound to glucose-6-phosphate''' | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
2HO7 is a [ | 2HO7 is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/ ]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2HO7 OCA]. | ||
==Reference== | ==Reference== | ||
Structural basis of glmS ribozyme activation by glucosamine-6-phosphate., Klein DJ, Ferre-D'Amare AR, Science. 2006 Sep 22;313(5794):1752-6. PMID:[http:// | Structural basis of glmS ribozyme activation by glucosamine-6-phosphate., Klein DJ, Ferre-D'Amare AR, Science. 2006 Sep 22;313(5794):1752-6. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/16990543 16990543] | ||
[[Category: Protein complex]] | [[Category: Protein complex]] | ||
[[Category: Amare, A R.Ferre-D.]] | [[Category: Amare, A R.Ferre-D.]] | ||
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[[Category: rna; ribozyme; pseudoknot; helix]] | [[Category: rna; ribozyme; pseudoknot; helix]] | ||
''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 17:19:23 2008'' | ||
Revision as of 15:19, 20 March 2008
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| 2ho7, resolution 2.90Å | |||||||||||||
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| Ligands: | G6P and MG | ||||||||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||||||||
Pre-cleavage state of the Thermoanaerobacter tengcongensis glmS ribozyme bound to glucose-6-phosphate
Overview
The glmS ribozyme is the only natural catalytic RNA known to require a small-molecule activator for catalysis. This catalytic RNA functions as a riboswitch, with activator-dependent RNA cleavage regulating glmS messenger RNA expression. We report crystal structures of the glmS ribozyme in precleavage states that are unliganded or bound to the competitive inhibitor glucose-6-phosphate and in the postcleavage state. All structures superimpose closely, revealing a remarkably rigid RNA that contains a preformed active and coenzyme-binding site. Unlike other riboswitches, the glmS ribozyme binds its activator in an open, solvent-accessible pocket. Our structures suggest that the amine group of the glmS ribozyme-bound coenzyme performs general acid-base and electrostatic catalysis.
About this Structure
2HO7 is a Protein complex structure of sequences from [1]. Full crystallographic information is available from OCA.
Reference
Structural basis of glmS ribozyme activation by glucosamine-6-phosphate., Klein DJ, Ferre-D'Amare AR, Science. 2006 Sep 22;313(5794):1752-6. PMID:16990543
Page seeded by OCA on Thu Mar 20 17:19:23 2008
