3ruw: Difference between revisions
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The | ==Crystal structure of Cpn-rls in complex with ADP-AlFx from Methanococcus maripaludis== | ||
<StructureSection load='3ruw' size='340' side='right'caption='[[3ruw]], [[Resolution|resolution]] 2.70Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[3ruw]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Methanococcus_maripaludis Methanococcus maripaludis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3RUW OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3RUW FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.702Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=AF3:ALUMINUM+FLUORIDE'>AF3</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> | |||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3ruw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ruw OCA], [https://pdbe.org/3ruw PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3ruw RCSB], [https://www.ebi.ac.uk/pdbsum/3ruw PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3ruw ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/Q877G8_METMI Q877G8_METMI] | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Group II chaperonins mediate protein folding in an ATP-dependent manner in eukaryotes and archaea. The binding of ATP and subsequent hydrolysis promotes the closure of the multi-subunit rings where protein folding occurs. The mechanism by which local changes in the nucleotide-binding site are communicated between individual subunits is unknown. The crystal structure of the archaeal chaperonin from Methanococcus maripaludis in several nucleotides bound states reveals the local conformational changes associated with ATP hydrolysis. Residue Lys-161, which is extremely conserved among group II chaperonins, forms interactions with the gamma-phosphate of ATP but shows a different orientation in the presence of ADP. The loss of the ATP gamma-phosphate interaction with Lys-161 in the ADP state promotes a significant rearrangement of a loop consisting of residues 160-169. We propose that Lys-161 functions as an ATP sensor and that 160-169 constitutes a nucleotide-sensing loop (NSL) that monitors the presence of the gamma-phosphate. Functional analysis using NSL mutants shows a significant decrease in ATPase activity, suggesting that the NSL is involved in timing of the protein folding cycle. | |||
Mechanism of nucleotide sensing in group II chaperonins.,Pereira JH, Ralston CY, Douglas NR, Kumar R, Lopez T, McAndrew RP, Knee KM, King JA, Frydman J, Adams PD EMBO J. 2011 Dec 23. doi: 10.1038/emboj.2011.468. PMID:22193720<ref>PMID:22193720</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 3ruw" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Chaperonin 3D structures|Chaperonin 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Large Structures]] | |||
[[Category: Methanococcus maripaludis]] | |||
[[Category: Adams PD]] | |||
[[Category: Douglas NR]] | |||
[[Category: Frydman J]] | |||
[[Category: King JA]] | |||
[[Category: Knee KM]] | |||
[[Category: Kumar R]] | |||
[[Category: McAndrew RP]] | |||
[[Category: Pereira JH]] | |||
[[Category: Ralston CY]] | |||
