1pn6

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{{STRUCTURE_1pn6| PDB=1pn6 | SCENE= }}
{{STRUCTURE_1pn6| PDB=1pn6 | SCENE= }}
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'''Domain-wise fitting of the crystal structure of T.thermophilus EF-G into the low resolution map of the release complex.Puromycin.EFG.GDPNP of E.coli 70S ribosome.'''
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===Domain-wise fitting of the crystal structure of T.thermophilus EF-G into the low resolution map of the release complex.Puromycin.EFG.GDPNP of E.coli 70S ribosome.===
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==Overview==
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During the ribosomal translocation, the binding of elongation factor G (EF-G) to the pretranslocational ribosome leads to a ratchet-like rotation of the 30S subunit relative to the 50S subunit in the direction of the mRNA movement. By means of cryo-electron microscopy we observe that this rotation is accompanied by a 20 A movement of the L1 stalk of the 50S subunit, implying that this region is involved in the translocation of deacylated tRNAs from the P to the E site. These ribosomal motions can occur only when the P-site tRNA is deacylated. Prior to peptidyl-transfer to the A-site tRNA or peptide removal, the presence of the charged P-site tRNA locks the ribosome and prohibits both of these motions.
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(as it appears on PubMed at http://www.pubmed.gov), where 12859903 is the PubMed ID number.
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{{ABSTRACT_PUBMED_12859903}}
==About this Structure==
==About this Structure==
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[[Category: Fitting of crystal structure]]
[[Category: Fitting of crystal structure]]
[[Category: Post-termination complex]]
[[Category: Post-termination complex]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May 3 05:16:14 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 16:22:17 2008''

Revision as of 13:22, 28 July 2008

Image:1pn6.png

Template:STRUCTURE 1pn6

Domain-wise fitting of the crystal structure of T.thermophilus EF-G into the low resolution map of the release complex.Puromycin.EFG.GDPNP of E.coli 70S ribosome.

Template:ABSTRACT PUBMED 12859903

About this Structure

1PN6 is a Single protein structure of sequence from Thermus thermophilus. Full crystallographic information is available from OCA.

Reference

Locking and unlocking of ribosomal motions., Valle M, Zavialov A, Sengupta J, Rawat U, Ehrenberg M, Frank J, Cell. 2003 Jul 11;114(1):123-34. PMID:12859903

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