|
|
| (One intermediate revision not shown.) |
| Line 3: |
Line 3: |
| | <StructureSection load='5k58' size='340' side='right'caption='[[5k58]], [[Resolution|resolution]] 2.77Å' scene=''> | | <StructureSection load='5k58' size='340' side='right'caption='[[5k58]], [[Resolution|resolution]] 2.77Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[5k58]] is a 10 chain structure with sequence from [http://en.wikipedia.org/wiki/Eco24 Eco24]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5K58 OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=5K58 FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[5k58]] is a 10 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli_O139:H28_str._E24377A Escherichia coli O139:H28 str. E24377A] and [https://en.wikipedia.org/wiki/Synthetic_construct Synthetic construct]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5K58 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5K58 FirstGlance]. <br> |
| - | </td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">slmA, EcE24377A_4142 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=331111 ECO24])</td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.772Å</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=5k58 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5k58 OCA], [http://pdbe.org/5k58 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5k58 RCSB], [http://www.ebi.ac.uk/pdbsum/5k58 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5k58 ProSAT]</span></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=5k58 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5k58 OCA], [https://pdbe.org/5k58 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5k58 RCSB], [https://www.ebi.ac.uk/pdbsum/5k58 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5k58 ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/SLMA_ECO24 SLMA_ECO24]] Required for nucleoid occlusion (NO) phenomenon, which prevents Z-ring formation and cell division over the nucleoid. Acts as a DNA-associated cell division inhibitor that binds simultaneously chromosomal DNA and FtsZ, and disrupts the assembly of FtsZ polymers. SlmA-DNA-binding sequences (SBS) are dispersed on non-Ter regions of the chromosome, preventing FtsZ polymerization at these regions. | + | [https://www.uniprot.org/uniprot/SLMA_ECOLI SLMA_ECOLI] Required for nucleoid occlusion (NO) phenomenon, which prevents Z-ring formation and cell division over the nucleoid. Acts as a DNA-associated cell division inhibitor that binds simultaneously chromosomal DNA and FtsZ, and disrupts the assembly of FtsZ polymers. SlmA-DNA-binding sequences (SBS) are dispersed on non-Ter regions of the chromosome, preventing FtsZ polymerization at these regions.[HAMAP-Rule:MF_01839]<ref>PMID:15916962</ref> <ref>PMID:21113127</ref> <ref>PMID:21321206</ref> |
| - | <div style="background-color:#fffaf0;">
| + | |
| - | == Publication Abstract from PubMed ==
| + | |
| - | Cell division in most prokaryotes is mediated by FtsZ, which polymerizes to create the cytokinetic Z ring. Multiple FtsZ-binding proteins regulate FtsZ polymerization to ensure the proper spatiotemporal formation of the Z ring at the division site. The DNA-binding protein SlmA binds to FtsZ and prevents Z-ring formation through the nucleoid in a process called "nucleoid occlusion" (NO). As do most FtsZ-accessory proteins, SlmA interacts with the conserved C-terminal domain (CTD) that is connected to the FtsZ core by a long, flexible linker. However, SlmA is distinct from other regulatory factors in that it must be DNA-bound to interact with the FtsZ CTD. Few structures of FtsZ regulator-CTD complexes are available, but all reveal the CTD bound as a helix. To deduce the molecular basis for the unique SlmA-DNA-FtsZ CTD regulatory interaction and provide insight into FtsZ-regulator protein complex formation, we determined structures of Escherichia coli, Vibrio cholera, and Klebsiella pneumonia SlmA-DNA-FtsZ CTD ternary complexes. Strikingly, the FtsZ CTD does not interact with SlmA as a helix but binds as an extended conformation in a narrow, surface-exposed pocket formed only in the DNA-bound state of SlmA and located at the junction between the DNA-binding and C-terminal dimer domains. Binding studies are consistent with the structure and underscore key interactions in complex formation. Combined, these data reveal the molecular basis for the SlmA-DNA-FtsZ interaction with implications for SlmA's NO function and underscore the ability of the FtsZ CTD to adopt a wide range of conformations, explaining its ability to bind diverse regulatory proteins.
| + | |
| - | | + | |
| - | Structures of the nucleoid occlusion protein SlmA bound to DNA and the C-terminal domain of the cytoskeletal protein FtsZ.,Schumacher MA, Zeng W Proc Natl Acad Sci U S A. 2016 May 3;113(18):4988-93. doi:, 10.1073/pnas.1602327113. Epub 2016 Apr 18. PMID:27091999<ref>PMID:27091999</ref>
| + | |
| - | | + | |
| - | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br>
| + | |
| - | </div> | + | |
| - | <div class="pdbe-citations 5k58" style="background-color:#fffaf0;"></div> | + | |
| | == References == | | == References == |
| | <references/> | | <references/> |
| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Eco24]] | + | [[Category: Escherichia coli O139:H28 str. E24377A]] |
| | [[Category: Large Structures]] | | [[Category: Large Structures]] |
| - | [[Category: Schumacher, M]] | + | [[Category: Synthetic construct]] |
| - | [[Category: Dna]] | + | [[Category: Schumacher M]] |
| - | [[Category: Dna binding protein-dna complex]]
| + | |
| - | [[Category: Ftsz]]
| + | |
| - | [[Category: Nucleoid occlusion]]
| + | |
| - | [[Category: Slma]]
| + | |
