1MMS image
Entry Detail
PDB ID:
1MMS
Keywords:
Title:
Crystal structure of the ribosomal PROTEIN L11-RNA complex
Biological Source:
Source Organism:
PDB Version:
Deposition Date:
1999-04-14
Release Date:
2000-04-17
Method Details:
Experimental Method:
Resolution:
2.57 Å
R-Value Free:
0.25
R-Value Work:
0.21
Space Group:
P 21 21 21
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:PROTEIN (RIBOSOMAL PROTEIN L11)
Chain IDs:C (auth: A), D (auth: B)
Chain Length:140
Number of Molecules:2
Biological Source:Thermotoga maritima
Polymer Type:polyribonucleotide
Description:23S RIBOSOMAL RNA
Mutations:U1108C
Chain IDs:A (auth: C), B (auth: D)
Chain Length:58
Number of Molecules:2
Biological Source:
Primary Citation
A detailed view of a ribosomal active site: the structure of the L11-RNA complex.
Cell(Cambridge,Mass.) 97 491 502 (1999)
PMID: 10338213 DOI: 10.1016/S0092-8674(00)80759-X

Abstact

We report the crystal structure of a 58 nucleotide fragment of 23S ribosomal RNA bound to ribosomal protein L11. This highly conserved ribonucleoprotein domain is the target for the thiostrepton family of antibiotics that disrupt elongation factor function. The highly compact RNA has both familiar and novel structural motifs. While the C-terminal domain of L11 binds RNA tightly, the N-terminal domain makes only limited contacts with RNA and is proposed to function as a switch that reversibly associates with an adjacent region of RNA. The sites of mutations conferring resistance to thiostrepton and micrococcin line a narrow cleft between the RNA and the N-terminal domain. These antibiotics are proposed to bind in this cleft, locking the putative switch and interfering with the function of elongation factors.

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