3jsp
From Proteopedia
(Difference between revisions)
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==Classic Protein With a New Twist: crystal structure of a LexA repressor DNA complex== | ==Classic Protein With a New Twist: crystal structure of a LexA repressor DNA complex== | ||
| - | <StructureSection load='3jsp' size='340' side='right' caption='[[3jsp]], [[Resolution|resolution]] 2.90Å' scene=''> | + | <StructureSection load='3jsp' size='340' side='right'caption='[[3jsp]], [[Resolution|resolution]] 2.90Å' scene=''> |
== Structural highlights == | == Structural highlights == | ||
| - | <table><tr><td colspan='2'>[[3jsp]] is a 4 chain structure with sequence from [ | + | <table><tr><td colspan='2'>[[3jsp]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Ecoli Ecoli]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3JSP OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3JSP FirstGlance]. <br> |
| - | </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3jso|3jso]]</td></tr> | + | </td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[3jso|3jso]]</div></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">lexA, exrA, spr, tsl, umuA, b4043, JW4003 ([ | + | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">lexA, exrA, spr, tsl, umuA, b4043, JW4003 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=83333 ECOLI])</td></tr> |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[ | + | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Repressor_lexA Repressor lexA], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.21.88 3.4.21.88] </span></td></tr> |
| - | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | + | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3jsp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3jsp OCA], [https://pdbe.org/3jsp PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3jsp RCSB], [https://www.ebi.ac.uk/pdbsum/3jsp PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3jsp ProSAT]</span></td></tr> |
</table> | </table> | ||
== Function == | == Function == | ||
| - | [[ | + | [[https://www.uniprot.org/uniprot/LEXA_ECOLI 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.<ref>PMID:7027255</ref> <ref>PMID:7027256</ref> |
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
Check<jmol> | Check<jmol> | ||
<jmolCheckbox> | <jmolCheckbox> | ||
| - | <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/js/3jsp_consurf.spt"</scriptWhenChecked> | + | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/js/3jsp_consurf.spt"</scriptWhenChecked> |
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | ||
<text>to colour the structure by Evolutionary Conservation</text> | <text>to colour the structure by Evolutionary Conservation</text> | ||
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</StructureSection> | </StructureSection> | ||
[[Category: Ecoli]] | [[Category: Ecoli]] | ||
| + | [[Category: Large Structures]] | ||
[[Category: Repressor lexA]] | [[Category: Repressor lexA]] | ||
[[Category: Pigli, Y Z]] | [[Category: Pigli, Y Z]] | ||
Revision as of 12:17, 13 October 2021
Classic Protein With a New Twist: crystal structure of a LexA repressor DNA complex
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Categories: Ecoli | Large Structures | Repressor lexA | Pigli, Y Z | Rice, P A | Zhang, A P.P | Autocatalytic cleavage | Dna damage | Dna repair | Dna replication | Dna-binding | Double helix | Hydrolase | Hydrolase-dna complex | Lexa | Protein-dna complex | Repressor | Sos response | Sos system | Transcription | Transcription regulation | Winged helix-turn-helix

