4lzz
From Proteopedia
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| - | + | ==Nucleotide-induced asymmetry within atpase activator ring drives s54-RNAP interaction and ATP hydrolysis== | |
| - | + | <StructureSection load='4lzz' size='340' side='right' caption='[[4lzz]], [[Resolution|resolution]] 3.21Å' scene=''> | |
| - | + | == Structural highlights == | |
| - | + | <table><tr><td colspan='2'>[[4lzz]] is a 24 chain structure with sequence from [http://en.wikipedia.org/wiki/"aquifex_aeolicus"_huber_and_stetter_2001 "aquifex aeolicus" huber and stetter 2001]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4LZZ OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4LZZ FirstGlance]. <br> | |
| + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=08T:[[[(2R,3S,4R,5R)-5-(6-AMINOPURIN-9-YL)-3,4-BIS(OXIDANYL)OXOLAN-2-YL]METHOXY-OXIDANYL-PHOSPHORYL]OXY-OXIDANYL-PHOSPHORYL]OXY-TRIS(FLUORANYL)BERYLLIUM'>08T</scene>, <scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr> | ||
| + | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4ly6|4ly6]]</td></tr> | ||
| + | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">aq_1117, ntrC1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=63363 "Aquifex aeolicus" Huber and Stetter 2001])</td></tr> | ||
| + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4lzz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4lzz OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4lzz RCSB], [http://www.ebi.ac.uk/pdbsum/4lzz PDBsum]</span></td></tr> | ||
| + | </table> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | It is largely unknown how the typical homomeric ring geometry of ATPases associated with various cellular activities enables them to perform mechanical work. Small-angle solution X-ray scattering, crystallography, and electron microscopy (EM) reconstructions revealed that partial ATP occupancy caused the heptameric closed ring of the bacterial enhancer-binding protein (bEBP) NtrC1 to rearrange into a hexameric split ring of striking asymmetry. The highly conserved and functionally crucial GAFTGA loops responsible for interacting with sigma54-RNA polymerase formed a spiral staircase. We propose that splitting of the ensemble directs ATP hydrolysis within the oligomer, and the ring's asymmetry guides interaction between ATPase and the complex of sigma54 and promoter DNA. Similarity between the structure of the transcriptional activator NtrC1 and those of distantly related helicases Rho and E1 reveals a general mechanism in homomeric ATPases whereby complex allostery within the ring geometry forms asymmetric functional states that allow these biological motors to exert directional forces on their target macromolecules. | ||
| - | + | Nucleotide-induced asymmetry within ATPase activator ring drives sigma54-RNAP interaction and ATP hydrolysis.,Sysoeva TA, Chowdhury S, Guo L, Nixon BT Genes Dev. 2013 Nov 15;27(22):2500-11. doi: 10.1101/gad.229385.113. PMID:24240239<ref>PMID:24240239</ref> | |
| - | + | ||
| - | == | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> |
| - | + | </div> | |
| - | [[Category: Chowdhury, S | + | == References == |
| - | [[Category: Guo, L | + | <references/> |
| - | [[Category: Nixon, B T | + | __TOC__ |
| - | [[Category: Sysoeva, T A | + | </StructureSection> |
| + | [[Category: Aquifex aeolicus huber and stetter 2001]] | ||
| + | [[Category: Chowdhury, S]] | ||
| + | [[Category: Guo, L]] | ||
| + | [[Category: Nixon, B T]] | ||
| + | [[Category: Sysoeva, T A]] | ||
[[Category: Aaa+ atpase]] | [[Category: Aaa+ atpase]] | ||
[[Category: Bacterial enhancer binding protein]] | [[Category: Bacterial enhancer binding protein]] | ||
Revision as of 18:07, 21 December 2014
Nucleotide-induced asymmetry within atpase activator ring drives s54-RNAP interaction and ATP hydrolysis
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