2GCS | pdb_00002gcs

Experimental Data Snapshot

wwPDB Validation 3D Report Full Report

This is version 1.4 of the entry. See complete history.

(2006) Science 313: 1752-1756

PubMed: 16990543 Search on PubMed
DOI: https://doi.org/10.1126/science.1129666
Primary Citation Related Structures:
2GCS, 2GCV, 2H0S, 2H0W, 2H0X, 2H0Z, 2HO6, 2HO7

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.

Organizational Affiliation

Division of Basic Sciences, Fred Hutchinson Cancer Research Center, 1100 Fairview Avenue North, Seattle, WA 98109-1024, USA.

Macromolecule Content

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Molecule	Chains	Length	Organism
Entity ID: 1
glmS ribozyme amino RNA inhibitor	A	27	N/A
Sequence Annotations Expand
Reference Sequence

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Molecule	Chains	Length	Organism
Entity ID: 2
glmS ribozyme RNA	B	125	N/A
Sequence Annotations Expand
Reference Sequence

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
MG Query on MG Download:Ideal Coordinates CCD File SDF format, chain H [auth B] SDF format, chain G [auth B] SDF format, chain F [auth B] SDF format, chain E [auth B] SDF format, chain D [auth B] SDF format, chain C [auth B] MOL2 format, chain H [auth B] MOL2 format, chain G [auth B] MOL2 format, chain F [auth B] MOL2 format, chain E [auth B] MOL2 format, chain D [auth B] MOL2 format, chain C [auth B] mmCIF format, chain H [auth B] mmCIF format, chain G [auth B] mmCIF format, chain F [auth B] mmCIF format, chain E [auth B] mmCIF format, chain D [auth B] mmCIF format, chain C [auth B]	C [auth B] D [auth B] E [auth B] F [auth B] G [auth B] C [auth B], D [auth B], E [auth B], F [auth B], G [auth B], H [auth B]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N		Interactions Focus chain C [auth B] Focus chain D [auth B] Focus chain E [auth B] Focus chain F [auth B] Focus chain G [auth B] Focus chain H [auth B] Interactions & Density Focus chain C [auth B] Focus chain D [auth B] Focus chain E [auth B] Focus chain F [auth B] Focus chain G [auth B] Focus chain H [auth B]