3sf4
From Proteopedia
(Difference between revisions)
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| - | + | ==Crystal structure of the complex between the conserved cell polarity proteins Inscuteable and LGN== | |
| - | + | <StructureSection load='3sf4' size='340' side='right' caption='[[3sf4]], [[Resolution|resolution]] 2.60Å' scene=''> | |
| - | + | == Structural highlights == | |
| - | + | <table><tr><td colspan='2'>[[3sf4]] is a 6 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3SF4 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3SF4 FirstGlance]. <br> | |
| - | ==Disease== | + | </td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">LGN ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens]), INSC ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</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=3sf4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3sf4 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3sf4 RCSB], [http://www.ebi.ac.uk/pdbsum/3sf4 PDBsum]</span></td></tr> | ||
| + | </table> | ||
| + | == Disease == | ||
[[http://www.uniprot.org/uniprot/GPSM2_HUMAN GPSM2_HUMAN]] Autosomal recessive nonsyndromic sensorineural deafness type DFNB;Chudley-McCullough syndrome. Chudley-McCullough syndrome (CMCS) [MIM:[http://omim.org/entry/604213 604213]]: An autosomal recessive neurologic disorder characterized by early-onset sensorineural deafness and specific brain anomalies on MRI, including hypoplasia of the corpus callosum, enlarged cysterna magna with mild focal cerebellar dysplasia, and nodular heterotopia. Some patients have hydrocephalus. Psychomotor development is normal. Note=The disease is caused by mutations affecting the gene represented in this entry.<ref>PMID:20602914</ref> <ref>PMID:22578326</ref> | [[http://www.uniprot.org/uniprot/GPSM2_HUMAN GPSM2_HUMAN]] Autosomal recessive nonsyndromic sensorineural deafness type DFNB;Chudley-McCullough syndrome. Chudley-McCullough syndrome (CMCS) [MIM:[http://omim.org/entry/604213 604213]]: An autosomal recessive neurologic disorder characterized by early-onset sensorineural deafness and specific brain anomalies on MRI, including hypoplasia of the corpus callosum, enlarged cysterna magna with mild focal cerebellar dysplasia, and nodular heterotopia. Some patients have hydrocephalus. Psychomotor development is normal. Note=The disease is caused by mutations affecting the gene represented in this entry.<ref>PMID:20602914</ref> <ref>PMID:22578326</ref> | ||
| - | + | == Function == | |
| - | ==Function== | + | |
[[http://www.uniprot.org/uniprot/GPSM2_HUMAN GPSM2_HUMAN]] Plays an important role in spindle pole orientation. Interacts and contributes to the functional activity of G(i) alpha proteins. Acts to stabilize the apical complex during neuroblast divisions.<ref>PMID:15632202</ref> [[http://www.uniprot.org/uniprot/INSC_HUMAN INSC_HUMAN]] May function as an adapter linking the Par3 complex to the GPSM1/GPSM2 complex. Involved in spindle orientation during mitosis it may regulate cell proliferation and differentiation in the developing nervous system. May play a role in the asymmetric division of fibroblasts and participate in the process of stratification of the squamous epithelium.<ref>PMID:16458856</ref> | [[http://www.uniprot.org/uniprot/GPSM2_HUMAN GPSM2_HUMAN]] Plays an important role in spindle pole orientation. Interacts and contributes to the functional activity of G(i) alpha proteins. Acts to stabilize the apical complex during neuroblast divisions.<ref>PMID:15632202</ref> [[http://www.uniprot.org/uniprot/INSC_HUMAN INSC_HUMAN]] May function as an adapter linking the Par3 complex to the GPSM1/GPSM2 complex. Involved in spindle orientation during mitosis it may regulate cell proliferation and differentiation in the developing nervous system. May play a role in the asymmetric division of fibroblasts and participate in the process of stratification of the squamous epithelium.<ref>PMID:16458856</ref> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Interaction between the mammalian cell polarity proteins mInsc (mammalian homologue of Inscuteable) and Leu-Gly-Asn repeat-enriched protein (LGN), as well as that between their respective Drosophila homologues Inscuteable and Partner of Inscuteable (Pins), plays crucial roles in mitotic spindle orientation, a process contributing to asymmetric cell division. Here, we report a crystal structure of the LGN-binding domain (LBD) of human mInsc complexed with the N-terminal tetratricopeptide repeat (TPR) motifs of human LGN at 2.6-A resolution. In the complex, mInsc-LBD adopts an elongated structure with three binding modules--an alpha-helix, an extended region, and a beta-sheet connected with a loop--that runs antiparallel to LGN along the concave surface of the superhelix formed by the TPRs. Structural analysis and structure-based mutagenesis define residues that are critical for mInsc-LGN association, and reveal that the activator of G-protein signaling 3 (AGS3)-binding protein Frmpd1 [4.1/ezrin/radixin/moesin (FERM) and PSD-95/Dlg/ZO-1 (PDZ) domain-containing protein 1] and its relative Frmpd4 interact with LGN via a region homologous to a part of mInsc-LBD, whereas nuclear mitotic apparatus protein (NuMA) and the C terminus of LGN recognize the TPR domain in a manner different from that by mInsc. mInsc binds to LGN with the highest affinity (K(D) approximately 2.4 nM) and effectively replaces the Frmpd proteins, NuMA, and the LGN C terminus, suggesting the priority of mInsc in binding to LGN. We also demonstrate, using mutant proteins, that mInsc-LGN interaction is vital for stabilization of LGN and for intracellular localization of mInsc. | ||
| - | + | Structural basis for interaction between the conserved cell polarity proteins Inscuteable and Leu-Gly-Asn repeat-enriched protein (LGN).,Yuzawa S, Kamakura S, Iwakiri Y, Hayase J, Sumimoto H Proc Natl Acad Sci U S A. 2011 Nov 29;108(48):19210-5. Epub 2011 Nov 10. PMID:22074847<ref>PMID:22074847</ref> | |
| - | + | ||
| - | == | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> |
| - | + | </div> | |
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
| - | [[Category: Hayase, J | + | [[Category: Hayase, J]] |
| - | [[Category: Iwakiri, Y | + | [[Category: Iwakiri, Y]] |
| - | [[Category: Kamakura, S | + | [[Category: Kamakura, S]] |
| - | [[Category: Sumimoto, H | + | [[Category: Sumimoto, H]] |
| - | [[Category: Yuzawa, S | + | [[Category: Yuzawa, S]] |
[[Category: Asymmetric cell division]] | [[Category: Asymmetric cell division]] | ||
[[Category: Cell polarity]] | [[Category: Cell polarity]] | ||
Revision as of 07:37, 21 December 2014
Crystal structure of the complex between the conserved cell polarity proteins Inscuteable and LGN
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