1lb2
From Proteopedia
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| - | [[Image:1lb2.png|left|200px]] | ||
| - | < | + | ==Structure of the E. coli alpha C-terminal domain of RNA polymerase in complex with CAP and DNA== |
| - | + | <StructureSection load='1lb2' size='340' side='right'caption='[[1lb2]], [[Resolution|resolution]] 3.10Å' scene=''> | |
| - | You may | + | == Structural highlights == |
| - | + | <table><tr><td colspan='2'>[[1lb2]] is a 5 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. The December 2003 RCSB PDB [https://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''Catabolite Activator Protein'' by David S. Goodsell is [https://dx.doi.org/10.2210/rcsb_pdb/mom_2003_12 10.2210/rcsb_pdb/mom_2003_12]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1LB2 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1LB2 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]] 3.1Å</td></tr> | |
| - | - | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CMP:ADENOSINE-3,5-CYCLIC-MONOPHOSPHATE'>CMP</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=1lb2 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1lb2 OCA], [https://pdbe.org/1lb2 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1lb2 RCSB], [https://www.ebi.ac.uk/pdbsum/1lb2 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1lb2 ProSAT]</span></td></tr> | |
| + | </table> | ||
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/CRP_ECOLI CRP_ECOLI] This protein complexes with cyclic AMP and binds to specific DNA sites near the promoter to regulate the transcription of several catabolite-sensitive operons. The protein induces a severe bend in the DNA. Acts as a negative regulator of its own synthesis as well as for adenylate cyclase (cyaA), which generates cAMP.<ref>PMID:2982847</ref> | ||
| + | == Evolutionary Conservation == | ||
| + | [[Image:Consurf_key_small.gif|200px|right]] | ||
| + | Check<jmol> | ||
| + | <jmolCheckbox> | ||
| + | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/lb/1lb2_consurf.spt"</scriptWhenChecked> | ||
| + | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | ||
| + | <text>to colour the structure by Evolutionary Conservation</text> | ||
| + | </jmolCheckbox> | ||
| + | </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=1lb2 ConSurf]. | ||
| + | <div style="clear:both"></div> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | The Escherichia coli catabolite activator protein (CAP) activates transcription at P(lac), P(gal), and other promoters through interactions with the RNA polymerase alpha subunit carboxyl-terminal domain (alphaCTD). We determined the crystal structure of the CAP-alphaCTD-DNA complex at a resolution of 3.1 angstroms. CAP makes direct protein-protein interactions with alphaCTD, and alphaCTD makes direct protein-DNA interactions with the DNA segment adjacent to the DNA site for CAP. There are no large-scale conformational changes in CAP and alphaCTD, and the interface between CAP and alphaCTD is small. These findings are consistent with the proposal that activation involves a simple "recruitment" mechanism. | ||
| - | + | Structural basis of transcription activation: the CAP-alpha CTD-DNA complex.,Benoff B, Yang H, Lawson CL, Parkinson G, Liu J, Blatter E, Ebright YW, Berman HM, Ebright RH Science. 2002 Aug 30;297(5586):1562-6. PMID:12202833<ref>PMID:12202833</ref> | |
| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| + | </div> | ||
| + | <div class="pdbe-citations 1lb2" style="background-color:#fffaf0;"></div> | ||
| - | + | ==See Also== | |
| - | + | *[[Catabolite gene activator protein 3D structures|Catabolite gene activator protein 3D structures]] | |
| - | == | + | *[[RNA polymerase 3D structures|RNA polymerase 3D structures]] |
| - | + | == References == | |
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
[[Category: Catabolite Activator Protein]] | [[Category: Catabolite Activator Protein]] | ||
| - | [[Category: DNA-directed RNA polymerase]] | ||
[[Category: Escherichia coli]] | [[Category: Escherichia coli]] | ||
| - | [[Category: | + | [[Category: Large Structures]] |
| - | [[Category: Benoff | + | [[Category: RCSB PDB Molecule of the Month]] |
| - | [[Category: Berman | + | [[Category: Benoff B]] |
| - | [[Category: Blatter | + | [[Category: Berman HM]] |
| - | [[Category: Ebright | + | [[Category: Blatter E]] |
| - | [[Category: Ebright | + | [[Category: Ebright RH]] |
| - | [[Category: Lawson | + | [[Category: Ebright YW]] |
| - | [[Category: Liu | + | [[Category: Lawson CL]] |
| - | [[Category: Parkinson | + | [[Category: Liu J]] |
| - | [[Category: Yang | + | [[Category: Parkinson G]] |
| - | + | [[Category: Yang H]] | |
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Current revision
Structure of the E. coli alpha C-terminal domain of RNA polymerase in complex with CAP and DNA
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