2gcs
From Proteopedia
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[[Image:2gcs.gif|left|200px]] | [[Image:2gcs.gif|left|200px]] | ||
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'''Pre-cleavage state of the Thermoanaerobacter tengcongensis glmS ribozyme''' | '''Pre-cleavage state of the Thermoanaerobacter tengcongensis glmS ribozyme''' | ||
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==About this Structure== | ==About this Structure== | ||
| - | 2GCS is a [[Single protein]] structure | + | 2GCS is a [[Single protein]] structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2GCS OCA]. |
==Reference== | ==Reference== | ||
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[[Category: Amare, A R.Ferre-D.]] | [[Category: Amare, A R.Ferre-D.]] | ||
[[Category: Klein, D J.]] | [[Category: Klein, D J.]] | ||
| - | [[Category: | + | [[Category: Helix]] |
| - | [[Category: | + | [[Category: Pseudoknot]] |
| - | [[Category: | + | [[Category: Ribozyme]] |
| - | [[Category: | + | [[Category: Rna]] |
| - | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 04:57:36 2008'' | |
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Revision as of 01:57, 4 May 2008
Pre-cleavage state of the Thermoanaerobacter tengcongensis glmS ribozyme
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
2GCS is a Single protein structure. 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 Sun May 4 04:57:36 2008
Categories: Single protein | Amare, A R.Ferre-D. | Klein, D J. | Helix | Pseudoknot | Ribozyme | Rna
