This old version of Proteopedia is provided for student assignments while the new version is undergoing repairs. Content and edits done in this old version of Proteopedia after March 1, 2026 will eventually be lost when it is retired in about June of 2026.
Apply for new accounts at the new Proteopedia. Your logins will work in both the old and new versions.
3s2k
From Proteopedia
(Difference between revisions)
| (5 intermediate revisions not shown.) | |||
| Line 1: | Line 1: | ||
| - | '''Unreleased structure''' | ||
| - | + | ==Structural basis of Wnt signaling inhibition by Dickkopf binding to LRP5/6.== | |
| + | <StructureSection load='3s2k' size='340' side='right'caption='[[3s2k]], [[Resolution|resolution]] 2.80Å' scene=''> | ||
| + | == Structural highlights == | ||
| + | <table><tr><td colspan='2'>[[3s2k]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3S2K OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3S2K FirstGlance]. <br> | ||
| + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=FUC:ALPHA-L-FUCOSE'>FUC</scene></td></tr> | ||
| + | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">LRP6 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN]), DKK1, UNQ492/PRO1008 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</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=3s2k FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3s2k OCA], [https://pdbe.org/3s2k PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3s2k RCSB], [https://www.ebi.ac.uk/pdbsum/3s2k PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3s2k ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | == Disease == | ||
| + | [[https://www.uniprot.org/uniprot/LRP6_HUMAN LRP6_HUMAN]] Coronary artery disease - hyperlipidemia - hypertension - diabetes - osteoporosis. The disease is caused by mutations affecting the gene represented in this entry. [[https://www.uniprot.org/uniprot/DKK1_HUMAN DKK1_HUMAN]] Idiopathic juvenile osteoporosis. | ||
| + | == Function == | ||
| + | [[https://www.uniprot.org/uniprot/LRP6_HUMAN LRP6_HUMAN]] Component of the Wnt-Fzd-LRP5-LRP6 complex that triggers beta-catenin signaling through inducing aggregation of receptor-ligand complexes into ribosome-sized signalsomes. Cell-surface coreceptor of Wnt/beta-catenin signaling, which plays a pivotal role in bone formation. The Wnt-induced Fzd/LRP6 coreceptor complex recruits DVL1 polymers to the plasma membrane which, in turn, recruits the AXIN1/GSK3B-complex to the cell surface promoting the formation of signalsomes and inhibiting AXIN1/GSK3-mediated phosphorylation and destruction of beta-catenin. Required for posterior patterning of the epiblast during gastrulation (By similarity).<ref>PMID:11448771</ref> <ref>PMID:11357136</ref> <ref>PMID:15778503</ref> <ref>PMID:16341017</ref> <ref>PMID:16513652</ref> <ref>PMID:17400545</ref> <ref>PMID:17326769</ref> <ref>PMID:19107203</ref> <ref>PMID:19801552</ref> <ref>PMID:19293931</ref> [[https://www.uniprot.org/uniprot/DKK1_HUMAN DKK1_HUMAN]] Antagonizes canonical Wnt signaling by inhibiting LRP5/6 interaction with Wnt and by forming a ternary complex with the transmembrane protein KREMEN that promotes internalization of LRP5/6. DKKs play an important role in vertebrate development, where they locally inhibit Wnt regulated processes such as antero-posterior axial patterning, limb development, somitogenesis and eye formation. In the adult, Dkks are implicated in bone formation and bone disease, cancer and Alzheimer disease.<ref>PMID:22000856</ref> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | LDL receptor-related proteins 5 and 6 (LRP5/6) are coreceptors for Wnt growth factors, and also bind Dkk proteins, secreted inhibitors of Wnt signaling. The LRP5/6 ectodomain contains four beta-propeller/EGF-like domain repeats. The first two repeats, LRP6(1-2), bind to several Wnt variants, whereas LRP6(3-4) binds other Wnts. We present the crystal structure of the Dkk1 C-terminal domain bound to LRP6(3-4), and show that the Dkk1 N-terminal domain binds to LRP6(1-2), demonstrating that a single Dkk1 molecule can bind to both portions of the LRP6 ectodomain and thereby inhibit different Wnts. Small-angle X-ray scattering analysis of LRP6(1-4) bound to a noninhibitory antibody fragment or to full-length Dkk1 shows that in both cases the ectodomain adopts a curved conformation that places the first three repeats at a similar height relative to the membrane. Thus, Wnts bound to either portion of the LRP6 ectodomain likely bear a similar spatial relationship to Frizzled coreceptors. | ||
| - | + | Structural Basis of Wnt Signaling Inhibition by Dickkopf Binding to LRP5/6.,Ahn VE, Chu ML, Choi HJ, Tran D, Abo A, Weis WI Dev Cell. 2011 Oct 12. PMID:22000856<ref>PMID:22000856</ref> | |
| - | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |
| + | </div> | ||
| + | <div class="pdbe-citations 3s2k" style="background-color:#fffaf0;"></div> | ||
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: Human]] | ||
| + | [[Category: Large Structures]] | ||
| + | [[Category: Abo, A]] | ||
| + | [[Category: Ahn, V E]] | ||
| + | [[Category: Choi, H J]] | ||
| + | [[Category: Chu, M L.H]] | ||
| + | [[Category: Tran, D]] | ||
| + | [[Category: Weis, W I]] | ||
| + | [[Category: Beta-propeller]] | ||
| + | [[Category: Egf domain]] | ||
| + | [[Category: Glycosylation]] | ||
| + | [[Category: Signaling protein]] | ||
| + | [[Category: Wnt co-receptor]] | ||
| + | [[Category: Wnt inhibitor]] | ||
| + | [[Category: Wnt signaling]] | ||
Current revision
Structural basis of Wnt signaling inhibition by Dickkopf binding to LRP5/6.
| |||||||||||
Categories: Human | Large Structures | Abo, A | Ahn, V E | Choi, H J | Chu, M L.H | Tran, D | Weis, W I | Beta-propeller | Egf domain | Glycosylation | Signaling protein | Wnt co-receptor | Wnt inhibitor | Wnt signaling
