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1jqm

From Proteopedia

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Revision as of 05:10, 10 February 2016

Fitting of L11 protein and elongation factor G (EF-G) in the cryo-em map of e. coli 70S ribosome bound with EF-G, GDP and fusidic acid

Structural highlights

1jqm is a 2 chain structure with sequence from Escherichia coli. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Related:	1eg0
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum

Function

[RL11_THEMA] This protein binds directly to 23S ribosomal RNA. [EFG_THETH] Catalyzes the GTP-dependent ribosomal translocation step during translation elongation. During this step, the ribosome changes from the pre-translocational (PRE) to the post-translocational (POST) state as the newly formed A-site-bound peptidyl-tRNA and P-site-bound deacylated tRNA move to the P and E sites, respectively. Catalyzes the coordinated movement of the two tRNA molecules, the mRNA and conformational changes in the ribosome.

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

L11 protein is located at the base of the L7/L12 stalk of the 50 S subunit of the Escherichia coli ribosome. Because of the flexible nature of the region, recent X-ray crystallographic studies of the 50 S subunit failed to locate the N-terminal domain of the protein. We have determined the position of the complete L11 protein by comparing a three-dimensional cryo-EM reconstruction of the 70 S ribosome, isolated from a mutant lacking ribosomal protein L11, with the three-dimensional map of the wild-type ribosome. Fitting of the X-ray coordinates of L11-23 S RNA complex and EF-G into the cryo-EM maps combined with molecular modeling, reveals that, following EF-G-dependent GTP hydrolysis, domain V of EF-G intrudes into the cleft between the 23 S ribosomal RNA and the N-terminal domain of L11 (where the antibiotic thiostrepton binds), causing the N-terminal domain to move and thereby inducing the formation of the arc-like connection with the G' domain of EF-G. The results provide a new insight into the mechanism of EF-G-dependent translocation.

Localization of L11 protein on the ribosome and elucidation of its involvement in EF-G-dependent translocation.,Agrawal RK, Linde J, Sengupta J, Nierhaus KH, Frank J J Mol Biol. 2001 Aug 24;311(4):777-87. PMID:11518530^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Agrawal RK, Linde J, Sengupta J, Nierhaus KH, Frank J. Localization of L11 protein on the ribosome and elucidation of its involvement in EF-G-dependent translocation. J Mol Biol. 2001 Aug 24;311(4):777-87. PMID:11518530 doi:http://dx.doi.org/10.1006/jmbi.2001.4907

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 See Also
6 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1jqm"

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     <text>to colour the structure by Evolutionary Conservation</text>
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-</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf].
+</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1jqm ConSurf].
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1jqm

From Proteopedia

Revision as of 05:10, 10 February 2016

Fitting of L11 protein and elongation factor G (EF-G) in the cryo-em map of e. coli 70S ribosome bound with EF-G, GDP and fusidic acid

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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