1nlf: Difference between revisions

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<StructureSection load='1nlf' size='340' side='right'caption='[[1nlf]], [[Resolution|resolution]] 1.95&Aring;' scene=''>
<StructureSection load='1nlf' size='340' side='right'caption='[[1nlf]], [[Resolution|resolution]] 1.95&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[1nlf]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_coli"_migula_1895 "bacillus coli" migula 1895]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1NLF OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=1NLF FirstGlance]. <br>
<table><tr><td colspan='2'>[[1nlf]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_coli Escherichia coli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1NLF OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1NLF FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></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]] 1.95&#8491;</td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">REPA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=562 "Bacillus coli" Migula 1895])</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><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'>[http://proteopedia.org/fgij/fg.htm?mol=1nlf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1nlf OCA], [http://pdbe.org/1nlf PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1nlf RCSB], [http://www.ebi.ac.uk/pdbsum/1nlf PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1nlf 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=1nlf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1nlf OCA], [https://pdbe.org/1nlf PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1nlf RCSB], [https://www.ebi.ac.uk/pdbsum/1nlf PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1nlf ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/REPJ_ECOLX REPJ_ECOLX]] This protein is involved in regulating the plasmid copy-number. Increasing the level of this protein results in a higher plasmid copy-number.  
[https://www.uniprot.org/uniprot/REPJ_ECOLX REPJ_ECOLX] This protein is involved in regulating the plasmid copy-number. Increasing the level of this protein results in a higher plasmid copy-number.
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
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</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=1nlf ConSurf].
</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=1nlf ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The structure of a new crystal form (space group C2), grown at pH 8.0 and diffracting to 1.95 A resolution, of the replicative homo-hexameric DNA helicase RepA encoded by plasmid RSF1010 is reported. In contrast to previous crystals grown at pH 6.0 in space group P2(1) (Niedenzu et al., 2001), only one half (a trimer) of the RepA hexamer occupies the asymmetric unit of the space-group C2 crystals. The new crystal packing explains the pH-dependent hexamer-hexamer association mechanism of RepA. The C-terminus (264)VLERQRKSKGVPRGEA(279), which could not be modelled in the previous structure, is clearly defined in the present electron density except for the last four amino acids. Sulfate anions occupy the six ATPase active sites of RepA at positions where the product phosphates are supposed to bind. Binding of sulfate anions induces conformational changes both at the ATPase active sites and throughout the whole molecular structure. In agreement with electron microscopy, the above studies implicate structural changes to an "open" form that may occur upon binding and hydrolysis of nucleotide 5'-triphosphates and could be essential for DNA duplex-unwinding activity.
Structure of DNA helicase RepA in complex with sulfate at 1.95 A resolution implicates structural changes to an "open" form.,Xu H, Strater N, Schroder W, Bottcher C, Ludwig K, Saenger W Acta Crystallogr D Biol Crystallogr. 2003 May;59(Pt 5):815-22. Epub 2003, Apr 25. PMID:12777796<ref>PMID:12777796</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1nlf" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
*[[Helicase 3D structures|Helicase 3D structures]]
*[[Helicase 3D structures|Helicase 3D structures]]
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Bacillus coli migula 1895]]
[[Category: Escherichia coli]]
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Bottcher, C]]
[[Category: Bottcher C]]
[[Category: Ludwig, K]]
[[Category: Ludwig K]]
[[Category: Saenger, W]]
[[Category: Saenger W]]
[[Category: Schroeder, W]]
[[Category: Schroeder W]]
[[Category: Strater, N]]
[[Category: Strater N]]
[[Category: Xu, H]]
[[Category: Xu H]]
[[Category: Replication]]
[[Category: Replicative dna helicase structural change]]

Latest revision as of 10:57, 14 February 2024

Crystal Structure of DNA Helicase RepA in complex with sulfate at 1.95 A resolutionCrystal Structure of DNA Helicase RepA in complex with sulfate at 1.95 A resolution

Structural highlights

1nlf is a 3 chain structure with sequence from Escherichia coli. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 1.95Å
Ligands:
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

REPJ_ECOLX This protein is involved in regulating the plasmid copy-number. Increasing the level of this protein results in a higher plasmid copy-number.

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

See Also

1nlf, resolution 1.95Å

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