2H0S
Pre-cleavage state of the Thermoanaerobacter tengcongensis glmS ribozyme
Summary for 2H0S
| Entry DOI | 10.2210/pdb2h0s/pdb |
| Related | 2GCS 2GCV 2H0W 2H0X 2H0Z |
| Descriptor | glmS ribozyme deoxy RNA inhibitor, glmS ribozyme RNA, MAGNESIUM ION, ... (4 entities in total) |
| Functional Keywords | rna, ribozyme, pseudoknot, helix |
| Total number of polymer chains | 2 |
| Total formula weight | 49767.87 |
| Authors | Klein, D.J.,Ferre-D'Amare, A.R. (deposition date: 2006-05-15, release date: 2006-09-26, Last modification date: 2024-02-14) |
| Primary citation | Klein, D.J.,Ferre-D'Amare, A.R. Structural basis of glmS ribozyme activation by glucosamine-6-phosphate Science, 313:1752-1756, 2006 Cited by PubMed Abstract: 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. PubMed: 16990543DOI: 10.1126/science.1129666 PDB entries with the same primary citation |
| Experimental method | X-RAY DIFFRACTION (2.35 Å) |
Structure validation
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