3f27: Difference between revisions
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==Structure of Sox17 Bound to DNA== | ==Structure of Sox17 Bound to DNA== | ||
<StructureSection load='3f27' size='340' side='right' caption='[[3f27]], [[Resolution|resolution]] 2.75Å' scene=''> | <StructureSection load='3f27' size='340' side='right'caption='[[3f27]], [[Resolution|resolution]] 2.75Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[3f27]] is a 3 chain structure with sequence from [ | <table><tr><td colspan='2'>[[3f27]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Lk3_transgenic_mice Lk3 transgenic mice]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3F27 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3F27 FirstGlance]. <br> | ||
</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">Sox-17, Sox17 ([ | </td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">Sox-17, Sox17 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10090 LK3 transgenic mice])</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=3f27 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3f27 OCA], [https://pdbe.org/3f27 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3f27 RCSB], [https://www.ebi.ac.uk/pdbsum/3f27 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3f27 ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
[[ | [[https://www.uniprot.org/uniprot/SOX17_MOUSE SOX17_MOUSE]] Acts as transcription regulator that binds target promoter DNA and bends the DNA. Binds to the sequences 5'-AACAAT-'3 or 5'-AACAAAG-3'. Modulates transcriptional regulation via WNT3A. Inhibits Wnt signaling. Promotes degradation of activated CTNNB1. Plays a key role in the regulation of embryonic development. Required for normal looping of the embryonic heart tube. Required for normal development of the definitive gut endoderm. Probable transcriptional activator in the premeiotic germ cells. Isoform 2 (T-SOX17) shows no DNA-binding activity.<ref>PMID:20802155</ref> | ||
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
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__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Large Structures]] | |||
[[Category: Lk3 transgenic mice]] | [[Category: Lk3 transgenic mice]] | ||
[[Category: Jauch, R]] | [[Category: Jauch, R]] | ||
Revision as of 12:21, 23 February 2022
Structure of Sox17 Bound to DNAStructure of Sox17 Bound to DNA
Structural highlights
Function[SOX17_MOUSE] Acts as transcription regulator that binds target promoter DNA and bends the DNA. Binds to the sequences 5'-AACAAT-'3 or 5'-AACAAAG-3'. Modulates transcriptional regulation via WNT3A. Inhibits Wnt signaling. Promotes degradation of activated CTNNB1. Plays a key role in the regulation of embryonic development. Required for normal looping of the embryonic heart tube. Required for normal development of the definitive gut endoderm. Probable transcriptional activator in the premeiotic germ cells. Isoform 2 (T-SOX17) shows no DNA-binding activity.[1] 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 PubMedSox17 regulates endodermal lineage commitment and is thought to function antagonistically to the pluripotency determinant Sox2. To investigate the biochemical basis for the distinct functions of Sox2 and Sox17, we solved the crystal structure of the high mobility group domain of Sox17 bound to a DNA element derived from the Lama1 enhancer using crystals diffracting to 2.7 A resolution. Sox17 targets the minor groove and bends the DNA by approximately 80 degrees . The DNA architecture closely resembles the one seen for Sox2/DNA structures, suggesting that the degree of bending is conserved between both proteins and nucleotide substitutions have only marginal effects on the bending topology. Accordingly, affinities of Sox2 and Sox17 for the Lama1 element were found to be identical. However, when the Oct1 contact interface of Sox2 is compared with the corresponding region of Sox17, a significantly altered charge distribution is observed, suggesting differential co-factor recruitment that may explain their biological distinctiveness. The structure of Sox17 bound to DNA reveals a conserved bending topology but selective protein interaction platforms.,Palasingam P, Jauch R, Ng CK, Kolatkar PR J Mol Biol. 2009 May 8;388(3):619-30. Epub 2009 Mar 25. PMID:19328208[2] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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