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| | ==Gly102Thr mutant of Rv3291c== | | ==Gly102Thr mutant of Rv3291c== |
| - | <StructureSection load='2w29' size='340' side='right' caption='[[2w29]], [[Resolution|resolution]] 4.10Å' scene=''> | + | <StructureSection load='2w29' size='340' side='right'caption='[[2w29]], [[Resolution|resolution]] 4.10Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2w29]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Myctu Myctu]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2W29 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2W29 FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[2w29]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Myctu Myctu]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2W29 OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=2W29 FirstGlance]. <br> |
| | </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2vbz|2vbz]], [[2ivm|2ivm]], [[2vc1|2vc1]], [[2w24|2w24]], [[2vc0|2vc0]], [[2vby|2vby]], [[2vbx|2vbx]], [[2vbw|2vbw]], [[2w25|2w25]], [[2w28|2w28]]</td></tr> | | </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2vbz|2vbz]], [[2ivm|2ivm]], [[2vc1|2vc1]], [[2w24|2w24]], [[2vc0|2vc0]], [[2vby|2vby]], [[2vbx|2vbx]], [[2vbw|2vbw]], [[2w25|2w25]], [[2w28|2w28]]</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=2w29 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2w29 OCA], [http://pdbe.org/2w29 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2w29 RCSB], [http://www.ebi.ac.uk/pdbsum/2w29 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2w29 ProSAT]</span></td></tr> | + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=2w29 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2w29 OCA], [http://pdbe.org/2w29 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2w29 RCSB], [http://www.ebi.ac.uk/pdbsum/2w29 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2w29 ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| | + | [[Category: Large Structures]] |
| | [[Category: Myctu]] | | [[Category: Myctu]] |
| | [[Category: Dey, S]] | | [[Category: Dey, S]] |
| Structural highlights
2w29 is a 4 chain structure with sequence from Myctu. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
| | Related: | 2vbz, 2ivm, 2vc1, 2w24, 2vc0, 2vby, 2vbx, 2vbw, 2w25, 2w28 |
| Resources: | FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT |
Evolutionary Conservation
Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.
Publication Abstract from PubMed
Rv3291c is a member of the feast/famine regulatory protein family that is known to form stable protein-DNA complexes. We report a specific oligomeric transition between hexadecameric and octameric/lower-order oligomers in the presence of Phe that supports an effector-mediated model for the disassembly of a nucleosome-like particle. We had generated two mutants, Gly102Thr and Glu104Ala, which are part of the essential 100-106 effector-binding loop. The Gly102Thr mutant adopts an unusual 'open' quaternary structure and offers interesting functional insights co-related to the binding of an effector. This is similar to the previously reported Escherichia coli Lrp co-crystallized in the presence of DNA where the interactions of the substrate with the N-terminal DNA binding domain presumably lead to symmetry deviations to the oligomeric association. The present structure represents a direct evidence to support that changes made to the effector-binding domain at the C-terminus also result in a functionally relevant quaternary structural change. Conversely, the Glu104Ala mutant retains the closed quaternary association observed in the native protein and reveals nonsymmetrical interaction effects in the two subunits of the dimer. We also report that the native protein unexpectedly binds Lys but does not recognize Arg and offer a structural explanation for it. Error-scaled difference distance matrix analysis suggests that the protein has a relatively flexible core that is presumably needed to mediate the structural changes necessary for the protein's regulatory functions.
Ligand-induced structural transitions, mutational analysis, and 'open' quaternary structure of the M. tuberculosis feast/famine regulatory protein (Rv3291c).,Shrivastava T, Dey A, Ramachandran R J Mol Biol. 2009 Oct 2;392(4):1007-19. Epub 2009 Aug 3. PMID:19651141[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Shrivastava T, Dey A, Ramachandran R. Ligand-induced structural transitions, mutational analysis, and 'open' quaternary structure of the M. tuberculosis feast/famine regulatory protein (Rv3291c). J Mol Biol. 2009 Oct 2;392(4):1007-19. Epub 2009 Aug 3. PMID:19651141 doi:10.1016/j.jmb.2009.07.084
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