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| | ==Crystal Structure of mouse CARMIL residues 1-668== | | ==Crystal Structure of mouse CARMIL residues 1-668== |
| - | <StructureSection load='4k17' size='340' side='right' caption='[[4k17]], [[Resolution|resolution]] 2.90Å' scene=''> | + | <StructureSection load='4k17' size='340' side='right'caption='[[4k17]], [[Resolution|resolution]] 2.90Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[4k17]] is a 4 chain structure with sequence from [http://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=4K17 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4K17 FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[4k17]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4K17 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4K17 FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ABU:GAMMA-AMINO-BUTANOIC+ACID'>ABU</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=OHB:SALICYLAMIDE'>OHB</scene></td></tr> | + | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ABU:GAMMA-AMINO-BUTANOIC+ACID'>ABU</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene>, <scene name='pdbligand=OHB:SALICYLAMIDE'>OHB</scene></td></tr> |
| - | <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=MSE:SELENOMETHIONINE'>MSE</scene></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=4k17 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4k17 OCA], [https://pdbe.org/4k17 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4k17 RCSB], [https://www.ebi.ac.uk/pdbsum/4k17 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4k17 ProSAT]</span></td></tr> |
| - | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">Carmil, Lrrc16, Lrrc16a ([http://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'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4k17 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4k17 OCA], [http://pdbe.org/4k17 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4k17 RCSB], [http://www.ebi.ac.uk/pdbsum/4k17 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4k17 ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/LR16A_MOUSE LR16A_MOUSE]] Binds CAPZA2 with high affinity and significantly decreases CAPZA2 affinity for actin barbed ends. Increases the rate of elongation from seeds in the presence of CAPZA2, however, seems unable to nucleate filaments. Rapidly uncaps barbed ends capped by CAPZA2 and enhances barbed-end actin polymerization.<ref>PMID:16054028</ref> | + | [https://www.uniprot.org/uniprot/CARL1_MOUSE CARL1_MOUSE] Cell membrane-cytoskeleton-associated protein that plays a role in the regulation of actin polymerization at the barbed end of actin filaments. Prevents F-actin heterodimeric capping protein (CP) activity at the leading edges of migrating cells, and hence generates uncapped barbed ends and enhances actin polymerization, however, seems unable to nucleate filaments (PubMed:16054028). Plays a role in lamellipodial protrusion formations and cell migration (PubMed:16054028).<ref>PMID:16054028</ref> |
| | <div style="background-color:#fffaf0;"> | | <div style="background-color:#fffaf0;"> |
| | == Publication Abstract from PubMed == | | == Publication Abstract from PubMed == |
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| | __TOC__ | | __TOC__ |
| | </StructureSection> | | </StructureSection> |
| - | [[Category: Lk3 transgenic mice]] | + | [[Category: Large Structures]] |
| - | [[Category: Dominguez, R]] | + | [[Category: Mus musculus]] |
| - | [[Category: Zwolak, A]] | + | [[Category: Dominguez R]] |
| - | [[Category: Lipid binding]] | + | [[Category: Zwolak A]] |
| - | [[Category: Lipid binding protein]]
| + | |
| - | [[Category: Lrr domain]]
| + | |
| - | [[Category: Ph domain]]
| + | |
| - | [[Category: Phosphatidylinositol]]
| + | |
| - | [[Category: Phosphatidylinositol-5-phosphate]]
| + | |
| - | [[Category: Phosphatidylserine]]
| + | |
| - | [[Category: Plasma membrane]]
| + | |
| - | [[Category: Protein-protein interaction]]
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| Structural highlights
Function
CARL1_MOUSE Cell membrane-cytoskeleton-associated protein that plays a role in the regulation of actin polymerization at the barbed end of actin filaments. Prevents F-actin heterodimeric capping protein (CP) activity at the leading edges of migrating cells, and hence generates uncapped barbed ends and enhances actin polymerization, however, seems unable to nucleate filaments (PubMed:16054028). Plays a role in lamellipodial protrusion formations and cell migration (PubMed:16054028).[1]
Publication Abstract from PubMed
CARMIL is an approximately 1,370-amino-acid cytoskeletal scaffold that has crucial roles in cell motility and tissue development through interactions with cytoskeletal effectors and regulation of capping protein at the leading edge. However, the mechanism of CARMIL leading edge localization is unknown. Here we show that CARMIL interacts directly with the plasma membrane through its amino-terminal region. The crystal structure of CARMIL1-668 reveals that this region harbours a non-canonical pleckstrin homology (PH) domain connected to a 16-leucine-rich repeat domain. Lipid binding is mediated by the PH domain, but is further enhanced by a central helical domain. Small-angle X-ray scattering reveals that the helical domain mediates antiparallel dimerization, properly positioning the PH domains for simultaneous membrane interaction. In cells, deletion of the PH domain impairs leading edge localization. The results support a direct membrane-binding mechanism for CARMIL localization at the leading edge, where it regulates cytoskeletal effectors and motility.
CARMIL leading edge localization depends on a non-canonical PH domain and dimerization.,Zwolak A, Yang C, Feeser EA, Michael Ostap E, Svitkina T, Dominguez R Nat Commun. 2013 Sep 27;4:2523. doi: 10.1038/ncomms3523. PMID:24071777[2]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Yang C, Pring M, Wear MA, Huang M, Cooper JA, Svitkina TM, Zigmond SH. Mammalian CARMIL inhibits actin filament capping by capping protein. Dev Cell. 2005 Aug;9(2):209-21. PMID:16054028 doi:http://dx.doi.org/10.1016/j.devcel.2005.06.008
- ↑ Zwolak A, Yang C, Feeser EA, Michael Ostap E, Svitkina T, Dominguez R. CARMIL leading edge localization depends on a non-canonical PH domain and dimerization. Nat Commun. 2013 Sep 27;4:2523. doi: 10.1038/ncomms3523. PMID:24071777 doi:http://dx.doi.org/10.1038/ncomms3523
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