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1leb

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Revision as of 10:58, 18 October 2017

SOLUTION STRUCTURE OF THE LEXA REPRESSOR DNA BINDING DETERMINED BY 1H NMR SPECTROSCOPY

Structural highlights

1leb is a 1 chain structure with sequence from "bacillus_coli"_migula_1895 "bacillus coli" migula 1895. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance.
Related:	1lea
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

[LEXA_ECOLI] Represses a number of genes involved in the response to DNA damage (SOS response), including recA and lexA. Binds to the 16 bp palindromic sequence 5'-CTGTATATATATACAG-3'. In the presence of single-stranded DNA, RecA interacts with LexA causing an autocatalytic cleavage which disrupts the DNA-binding part of LexA, leading to derepression of the SOS regulon and eventually DNA repair.^[1] ^[2]

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

The structure of the 84 residue DNA binding domain of the Escherichia coli LexA repressor has been determined from NMR data using distance geometry and restrained molecular dynamics. The assignment of the 1H NMR spectrum of the molecule, derived from 2- and 3-D homonuclear experiments, is also reported. A total of 613 non-redundant distance restraints were used to give a final family of 28 structures. The structured region of the molecule consisted of residues 4-69 and yielded a r.m.s. deviation from an average of 0.9 A for backbone and 1.6 A for all heavy atoms. The structure contains three regular alpha-helices at residues 6-21 (I), 28-35 (II) and 41-52 (III), and an antiparallel beta-sheet at residues 56-58 and 66-68. Helices II and III form a variant helix-turn-helix DNA binding motif, with an unusual one residue insert at residue 38. The topology of the LexA DNA binding domain is found to be the same as for the DNA binding domains of the catabolic activator protein, human histone 5, the HNF-3/fork head protein and the Kluyveromyces lactis heat shock transcription factor.

Solution structure of the LexA repressor DNA binding domain determined by 1H NMR spectroscopy.,Fogh RH, Ottleben G, Ruterjans H, Schnarr M, Boelens R, Kaptein R EMBO J. 1994 Sep 1;13(17):3936-44. PMID:8076591^[3]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Little JW, Mount DW, Yanisch-Perron CR. Purified lexA protein is a repressor of the recA and lexA genes. Proc Natl Acad Sci U S A. 1981 Jul;78(7):4199-203. PMID:7027255
↑ Brent R, Ptashne M. Mechanism of action of the lexA gene product. Proc Natl Acad Sci U S A. 1981 Jul;78(7):4204-8. PMID:7027256
↑ Fogh RH, Ottleben G, Ruterjans H, Schnarr M, Boelens R, Kaptein R. Solution structure of the LexA repressor DNA binding domain determined by 1H NMR spectroscopy. EMBO J. 1994 Sep 1;13(17):3936-44. PMID:8076591

1 Structural highlights
2 Function
3 Evolutionary Conservation
4 Publication Abstract from PubMed
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/1leb"

@@ Line 1: / Line 1: @@
 ==SOLUTION STRUCTURE OF THE LEXA REPRESSOR DNA BINDING DETERMINED BY 1H NMR SPECTROSCOPY==
 <StructureSection load='1leb' size='340' side='right' caption='[[1leb]], [[NMR_Ensembles_of_Models | 28 NMR models]]' scene=''>
@@ Line 4: / Line 5: @@
 <table><tr><td colspan='2'>[[1leb]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/"bacillus_coli"_migula_1895 "bacillus coli" migula 1895]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1LEB OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1LEB FirstGlance]. <br>
 </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1lea|1lea]]</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=1leb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1leb OCA], [http://pdbe.org/1leb PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1leb RCSB], [http://www.ebi.ac.uk/pdbsum/1leb PDBsum]</span></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=1leb FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1leb OCA], [http://pdbe.org/1leb PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1leb RCSB], [http://www.ebi.ac.uk/pdbsum/1leb PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1leb ProSAT]</span></td></tr>
 </table>
 == Function ==
@@ Line 16: / Line 17: @@
     <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/chain_selection.php?pdb_ID=2ata 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=1leb ConSurf].
 <div style="clear:both"></div>
 <div style="background-color:#fffaf0;">

1leb

From Proteopedia

Revision as of 10:58, 18 October 2017

SOLUTION STRUCTURE OF THE LEXA REPRESSOR DNA BINDING DETERMINED BY 1H NMR SPECTROSCOPY

Structural highlights

Function

Evolutionary Conservation

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

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