3B4C image
Deposition Date 2007-10-23
Release Date 2007-12-11
Last Version Date 2024-02-21
Entry Detail
PDB ID:
3B4C
Keywords:
RNA
Title:
T. tengcongensis glmS ribozyme bound to glucosamine-6-phosphate and a substrate RNA with a 2'5'-phosphodiester linkage
Biological Source:
Source Organism:
Thermoanaerobacter tengcongensis (Taxon ID: 119072)
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
3.00 Å
R-Value Free:
0.26
R-Value Work:
0.22
Space Group:
P 21 21 2
3B4C validation report
Macromolecular Entities
Polymer Type:polyribonucleotide
Molecule:glmS ribozyme substrate with a 2'5'-phosphodiester linkage
Chain IDs:A
Chain Length:26
Number of Molecules:1
Biological Source:Thermoanaerobacter tengcongensis
Polymer Type:polyribonucleotide
Molecule:glmS ribozyme RNA
Chain IDs:B
Chain Length:125
Number of Molecules:1
Biological Source:Thermoanaerobacter tengcongensis
Primary Citation
Essential Role of an Active-Site Guanine in glmS Ribozyme Catalysis.
J.Am.Chem.Soc. 129 14858 14859 (2007)
PMID: 17990888 DOI: 10.1021/ja0768441

Abstact

The glmS ribozyme is a catalytic riboswitch that is activated for endonucleolytic cleavage by the coenzyme glucosamine-6-phosphate. Using kinetic assays and X-ray crystallography, we identify an active-site mutation of a conserved guanine that abolishes catalysis without perturbing coenzyme binding. Our results provide evidence that coenzyme function requires a specific nucleobase to interact with the nucleophile of the cleavage reaction.

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Disease

Primary Citation of related structures
3B4A
3B4B