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1aon
From Proteopedia
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|PDB= 1aon |SIZE=350|CAPTION= <scene name='initialview01'>1aon</scene>, resolution 3.0Å | |PDB= 1aon |SIZE=350|CAPTION= <scene name='initialview01'>1aon</scene>, resolution 3.0Å | ||
|SITE= | |SITE= | ||
| - | |LIGAND= <scene name='pdbligand= | + | |LIGAND= <scene name='pdbligand=ADP:ADENOSINE-5'-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene> |
|ACTIVITY= | |ACTIVITY= | ||
|GENE= GROE ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 Escherichia coli]) | |GENE= GROE ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 Escherichia coli]) | ||
| + | |DOMAIN= | ||
| + | |RELATEDENTRY= | ||
| + | |RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1aon FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1aon OCA], [http://www.ebi.ac.uk/pdbsum/1aon PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1aon RCSB]</span> | ||
}} | }} | ||
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[[Category: Sigler, P B.]] | [[Category: Sigler, P B.]] | ||
[[Category: Xu, Z.]] | [[Category: Xu, Z.]] | ||
| - | [[Category: ADP]] | ||
| - | [[Category: MG]] | ||
[[Category: chaperonin assisted protein folding]] | [[Category: chaperonin assisted protein folding]] | ||
[[Category: complex (groel/groes)]] | [[Category: complex (groel/groes)]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 18:44:31 2008'' |
Revision as of 15:44, 30 March 2008
| |||||||
| , resolution 3.0Å | |||||||
|---|---|---|---|---|---|---|---|
| Ligands: | , | ||||||
| Gene: | GROE (Escherichia coli) | ||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
CRYSTAL STRUCTURE OF THE ASYMMETRIC CHAPERONIN COMPLEX GROEL/GROES/(ADP)7
Overview
Chaperonins assist protein folding with the consumption of ATP. They exist as multi-subunit protein assemblies comprising rings of subunits stacked back to back. In Escherichia coli, asymmetric intermediates of GroEL are formed with the co-chaperonin GroES and nucleotides bound only to one of the seven-subunit rings (the cis ring) and not to the opposing ring (the trans ring). The structure of the GroEL-GroES-(ADP)7 complex reveals how large en bloc movements of the cis ring's intermediate and apical domains enable bound GroES to stabilize a folding chamber with ADP confined to the cis ring. Elevation and twist of the apical domains double the volume of the central cavity and bury hydrophobic peptide-binding residues in the interface with GroES, as well as between GroEL subunits, leaving a hydrophilic cavity lining that is conducive to protein folding. An inward tilt of the cis equatorial domain causes an outward tilt in the trans ring that opposes the binding of a second GroES. When combined with new functional results, this negative allosteric mechanism suggests a model for an ATP-driven folding cycle that requires a double toroid.
About this Structure
1AON is a Protein complex structure of sequences from Escherichia coli. The following page contains interesting information on the relation of 1AON with [Chaperones]. Full crystallographic information is available from OCA.
Reference
The crystal structure of the asymmetric GroEL-GroES-(ADP)7 chaperonin complex., Xu Z, Horwich AL, Sigler PB, Nature. 1997 Aug 21;388(6644):741-50. PMID:9285585
Page seeded by OCA on Sun Mar 30 18:44:31 2008
