2bcw
From Proteopedia
(New page: 200px<br /><applet load="2bcw" size="450" color="white" frame="true" align="right" spinBox="true" caption="2bcw" /> '''Coordinates of the N-terminal domain of ribo...) |
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'''Coordinates of the N-terminal domain of ribosomal protein L11,C-terminal domain of ribosomal protein L7/L12 and a portion of the G' domain of elongation factor G, as fitted into cryo-em map of an Escherichia coli 70S*EF-G*GDP*fusidic acid complex'''<br /> | '''Coordinates of the N-terminal domain of ribosomal protein L11,C-terminal domain of ribosomal protein L7/L12 and a portion of the G' domain of elongation factor G, as fitted into cryo-em map of an Escherichia coli 70S*EF-G*GDP*fusidic acid complex'''<br /> | ||
==Overview== | ==Overview== | ||
| - | During tRNA translocation on the ribosome, an arc-like connection (ALC) is | + | During tRNA translocation on the ribosome, an arc-like connection (ALC) is formed between the G' domain of elongation factor G (EF-G) and the L7/L12-stalk base of the large ribosomal subunit in the GDP state. To delineate the boundary of EF-G within the ALC, we tagged an amino acid residue near the tip of the G' domain of EF-G with undecagold, which was then visualized with three-dimensional cryo-electron microscopy (cryo-EM). Two distinct positions for the undecagold, observed in the GTP-state and GDP-state cryo-EM maps of the ribosome bound EF-G, allowed us to determine the movement of the labeled amino acid. Molecular analyses of the cryo-EM maps show: (1) that three structural components, the N-terminal domain of ribosomal protein L11, the C-terminal domain of ribosomal protein L7/L12, and the G' domain of EF-G, participate in formation of the ALC; and (2) that both EF-G and the ribosomal protein L7/L12 undergo large conformational changes to form the ALC. |
==About this Structure== | ==About this Structure== | ||
| - | 2BCW is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli], [http://en.wikipedia.org/wiki/Thermotoga_maritima Thermotoga maritima] and [http://en.wikipedia.org/wiki/Thermus_thermophilus Thermus thermophilus]. Full crystallographic information is available from [http:// | + | 2BCW is a [http://en.wikipedia.org/wiki/Protein_complex Protein complex] structure of sequences from [http://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli], [http://en.wikipedia.org/wiki/Thermotoga_maritima Thermotoga maritima] and [http://en.wikipedia.org/wiki/Thermus_thermophilus Thermus thermophilus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2BCW OCA]. |
==Reference== | ==Reference== | ||
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[[Category: Thermotoga maritima]] | [[Category: Thermotoga maritima]] | ||
[[Category: Thermus thermophilus]] | [[Category: Thermus thermophilus]] | ||
| - | [[Category: Agrawal, R | + | [[Category: Agrawal, R K.]] |
| - | [[Category: Datta, P | + | [[Category: Datta, P P.]] |
[[Category: Frank, J.]] | [[Category: Frank, J.]] | ||
[[Category: Qi, L.]] | [[Category: Qi, L.]] | ||
| - | [[Category: Sharma, M | + | [[Category: Sharma, M R.]] |
[[Category: components involved in interaction between ef-g and l7/l12 stalk base of the ribosome]] | [[Category: components involved in interaction between ef-g and l7/l12 stalk base of the ribosome]] | ||
| - | ''Page seeded by [http:// | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 16:36:26 2008'' |
Revision as of 14:36, 21 February 2008
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Coordinates of the N-terminal domain of ribosomal protein L11,C-terminal domain of ribosomal protein L7/L12 and a portion of the G' domain of elongation factor G, as fitted into cryo-em map of an Escherichia coli 70S*EF-G*GDP*fusidic acid complex
Overview
During tRNA translocation on the ribosome, an arc-like connection (ALC) is formed between the G' domain of elongation factor G (EF-G) and the L7/L12-stalk base of the large ribosomal subunit in the GDP state. To delineate the boundary of EF-G within the ALC, we tagged an amino acid residue near the tip of the G' domain of EF-G with undecagold, which was then visualized with three-dimensional cryo-electron microscopy (cryo-EM). Two distinct positions for the undecagold, observed in the GTP-state and GDP-state cryo-EM maps of the ribosome bound EF-G, allowed us to determine the movement of the labeled amino acid. Molecular analyses of the cryo-EM maps show: (1) that three structural components, the N-terminal domain of ribosomal protein L11, the C-terminal domain of ribosomal protein L7/L12, and the G' domain of EF-G, participate in formation of the ALC; and (2) that both EF-G and the ribosomal protein L7/L12 undergo large conformational changes to form the ALC.
About this Structure
2BCW is a Protein complex structure of sequences from Escherichia coli, Thermotoga maritima and Thermus thermophilus. Full crystallographic information is available from OCA.
Reference
Interaction of the G' domain of elongation factor G and the C-terminal domain of ribosomal protein L7/L12 during translocation as revealed by cryo-EM., Datta PP, Sharma MR, Qi L, Frank J, Agrawal RK, Mol Cell. 2005 Dec 9;20(5):723-31. PMID:16337596
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