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| | ==Hetero-tetrameric L27 (Lin-2, Lin-7) domain complexes as organization platforms of supra-molecular assemblies== | | ==Hetero-tetrameric L27 (Lin-2, Lin-7) domain complexes as organization platforms of supra-molecular assemblies== |
| - | <StructureSection load='1rso' size='340' side='right' caption='[[1rso]], [[NMR_Ensembles_of_Models | 20 NMR models]]' scene=''> | + | <StructureSection load='1rso' size='340' side='right'caption='[[1rso]]' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[1rso]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Buffalo_rat Buffalo rat]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1RSO OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1RSO FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[1rso]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1RSO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1RSO FirstGlance]. <br> |
| - | </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=1rso FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1rso OCA], [http://pdbe.org/1rso PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1rso RCSB], [http://www.ebi.ac.uk/pdbsum/1rso PDBsum]</span></td></tr> | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</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=1rso FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1rso OCA], [https://pdbe.org/1rso PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1rso RCSB], [https://www.ebi.ac.uk/pdbsum/1rso PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1rso ProSAT]</span></td></tr> |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/DLG1_RAT DLG1_RAT]] Essential multidomain scaffolding protein required for normal development (By similarity). Recruits channels, receptors and signaling molecules to discrete plasma membrane domains in polarized cells. Regulates the excitability of cardiac myocytes by modulating the functional expression of Kv4 channels. Functional regulator of Kv1.5 channel (By similarity). May play a role in adherens junction assembly, signal transduction, cell proliferation, synaptogenesis and lymphocyte activation.<ref>PMID:14960569</ref> <ref>PMID:15044483</ref> <ref>PMID:15504326</ref> <ref>PMID:19213956</ref> [[http://www.uniprot.org/uniprot/CSKP_RAT CSKP_RAT]] Multidomain scaffolding protein with a role in synaptic transmembrane protein anchoring and ion channel trafficking. Contributes to neural development and regulation of gene expression via interaction with the transcription factor TRB1. Binds to cell-surface proteins, including amyloid precursor protein, neurexins, and syndecans. May mediate a link between the extracellular matrix and the actin cytoskeleton via its interaction with syndecan and with the actin/spectrin-binding protein 4.1.<ref>PMID:10749215</ref> | + | [https://www.uniprot.org/uniprot/DLG1_RAT DLG1_RAT] Essential multidomain scaffolding protein required for normal development (By similarity). Recruits channels, receptors and signaling molecules to discrete plasma membrane domains in polarized cells. Regulates the excitability of cardiac myocytes by modulating the functional expression of Kv4 channels. Functional regulator of Kv1.5 channel (By similarity). May play a role in adherens junction assembly, signal transduction, cell proliferation, synaptogenesis and lymphocyte activation.<ref>PMID:14960569</ref> <ref>PMID:15044483</ref> <ref>PMID:15504326</ref> <ref>PMID:19213956</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/rs/1rso_consurf.spt"</scriptWhenChecked> | + | <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/rs/1rso_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> |
| | </jmolCheckbox> | | </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=1rso ConSurf]. |
| | <div style="clear:both"></div> | | <div style="clear:both"></div> |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Buffalo rat]] | + | [[Category: Large Structures]] |
| - | [[Category: Fan, J S]] | + | [[Category: Rattus norvegicus]] |
| - | [[Category: Feng, W]] | + | [[Category: Fan J-S]] |
| - | [[Category: Long, J F]] | + | [[Category: Feng W]] |
| - | [[Category: Suetake, T]] | + | [[Category: Long J-F]] |
| - | [[Category: Zhang, M]] | + | [[Category: Suetake T]] |
| - | [[Category: Cell polarity]]
| + | [[Category: Zhang M]] |
| - | [[Category: L27 domain]]
| + | |
| - | [[Category: Neuropeptide-membrane protein complex]]
| + | |
| - | [[Category: Protein assembly]]
| + | |
| - | [[Category: Scaffold protein]]
| + | |
| Structural highlights
Function
DLG1_RAT Essential multidomain scaffolding protein required for normal development (By similarity). Recruits channels, receptors and signaling molecules to discrete plasma membrane domains in polarized cells. Regulates the excitability of cardiac myocytes by modulating the functional expression of Kv4 channels. Functional regulator of Kv1.5 channel (By similarity). May play a role in adherens junction assembly, signal transduction, cell proliferation, synaptogenesis and lymphocyte activation.[1] [2] [3] [4]
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
L27 domain, initially identified in the Caenorhabditis elegans Lin-2 and Lin-7 proteins, is a protein interaction module that exists in a large family of scaffold proteins. The domain can function as an organization center of large protein assemblies required for establishment and maintenance of cell polarity. We have solved the high-resolution NMR structure of a tetrameric complex of L27 domains containing two SAP97-mLin-2 L27 domain heterodimers. Each L27 domain contains three a-helices. The first two helices of each domain are packed together to form a four-helical bundle in the heterodimer. The third helix of each L27 domain forms another four-helical bundle that assembles the two heterodimers into a tetramer. The structure of the complex provides a mechanistic explanation for L27 domain-mediated polymerization of scaffold proteins, a process that is crucial for the assembly of supramolecular complexes in asymmetric cells.
The tetrameric L27 domain complex as an organization platform for supramolecular assemblies.,Feng W, Long JF, Fan JS, Suetake T, Zhang M Nat Struct Mol Biol. 2004 May;11(5):475-80. Epub 2004 Mar 28. PMID:15048107[5]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Leonoudakis D, Conti LR, Radeke CM, McGuire LM, Vandenberg CA. A multiprotein trafficking complex composed of SAP97, CASK, Veli, and Mint1 is associated with inward rectifier Kir2 potassium channels. J Biol Chem. 2004 Apr 30;279(18):19051-63. Epub 2004 Feb 11. PMID:14960569 doi:http://dx.doi.org/10.1074/jbc.M400284200
- ↑ Mauceri D, Cattabeni F, Di Luca M, Gardoni F. Calcium/calmodulin-dependent protein kinase II phosphorylation drives synapse-associated protein 97 into spines. J Biol Chem. 2004 May 28;279(22):23813-21. Epub 2004 Mar 24. PMID:15044483 doi:http://dx.doi.org/10.1074/jbc.M402796200
- ↑ Nakagawa T, Futai K, Lashuel HA, Lo I, Okamoto K, Walz T, Hayashi Y, Sheng M. Quaternary structure, protein dynamics, and synaptic function of SAP97 controlled by L27 domain interactions. Neuron. 2004 Oct 28;44(3):453-67. PMID:15504326 doi:http://dx.doi.org/10.1016/j.neuron.2004.10.012
- ↑ El-Haou S, Balse E, Neyroud N, Dilanian G, Gavillet B, Abriel H, Coulombe A, Jeromin A, Hatem SN. Kv4 potassium channels form a tripartite complex with the anchoring protein SAP97 and CaMKII in cardiac myocytes. Circ Res. 2009 Mar 27;104(6):758-69. doi: 10.1161/CIRCRESAHA.108.191007. Epub, 2009 Feb 12. PMID:19213956 doi:10.1161/CIRCRESAHA.108.191007
- ↑ Feng W, Long JF, Fan JS, Suetake T, Zhang M. The tetrameric L27 domain complex as an organization platform for supramolecular assemblies. Nat Struct Mol Biol. 2004 May;11(5):475-80. Epub 2004 Mar 28. PMID:15048107 doi:10.1038/nsmb751
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