6cmx: Difference between revisions
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==Human Teneurin 2 extra-cellular region== | ==Human Teneurin 2 extra-cellular region== | ||
< | <SX load='6cmx' size='340' side='right' viewer='molstar' caption='[[6cmx]], [[Resolution|resolution]] 3.10Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[6cmx]] is a 1 chain structure with sequence from [ | <table><tr><td colspan='2'>[[6cmx]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6CMX OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6CMX FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=MAN:ALPHA-D-MANNOSE'>MAN</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>< | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 3.1Å</td></tr> | ||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MAN:ALPHA-D-MANNOSE'>MAN</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=PRD_900118:6alpha-alpha-mannobiose'>PRD_900118</scene></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=6cmx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6cmx OCA], [https://pdbe.org/6cmx PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6cmx RCSB], [https://www.ebi.ac.uk/pdbsum/6cmx PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6cmx ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | |||
[https://www.uniprot.org/uniprot/TEN2_HUMAN TEN2_HUMAN] Involved in neural development, regulating the establishment of proper connectivity within the nervous system. Promotes the formation of filopodia and enlarged growth cone in neuronal cells. Induces homophilic cell-cell adhesion (By similarity). May function as a cellular signal transducer.<ref>PMID:21724987</ref> Acts as a ligand of the ADGRL1 receptor. Mediates axon guidance and heterophilic cell-cell adhesion.<ref>PMID:21724987</ref> Induces gene transcription inhibition. | |||
<div style="background-color:#fffaf0;"> | <div style="background-color:#fffaf0;"> | ||
== Publication Abstract from PubMed == | == Publication Abstract from PubMed == | ||
Teneurins (TENs) are cell-surface adhesion proteins with critical roles in tissue development and axon guidance. Here, we report the 3.1-A cryoelectron microscopy structure of the human TEN2 extracellular region (ECR), revealing a striking similarity to bacterial Tc-toxins. The ECR includes a large beta barrel that partially encapsulates a C-terminal domain, which emerges to the solvent through an opening in the mid-barrel region. An immunoglobulin (Ig)-like domain seals the bottom of the barrel while a beta propeller is attached in a perpendicular orientation. We further show that an alternatively spliced region within the beta propeller acts as a switch to regulate trans-cellular adhesion of TEN2 to latrophilin (LPHN), a transmembrane receptor known to mediate critical functions in the central nervous system. One splice variant activates trans-cellular signaling in a LPHN-dependent manner, whereas the other induces inhibitory postsynaptic differentiation. These results highlight the unusual structural organization of TENs giving rise to their multifarious functions. | Teneurins (TENs) are cell-surface adhesion proteins with critical roles in tissue development and axon guidance. Here, we report the 3.1-A cryoelectron microscopy structure of the human TEN2 extracellular region (ECR), revealing a striking similarity to bacterial Tc-toxins. The ECR includes a large beta barrel that partially encapsulates a C-terminal domain, which emerges to the solvent through an opening in the mid-barrel region. An immunoglobulin (Ig)-like domain seals the bottom of the barrel while a beta propeller is attached in a perpendicular orientation. We further show that an alternatively spliced region within the beta propeller acts as a switch to regulate trans-cellular adhesion of TEN2 to latrophilin (LPHN), a transmembrane receptor known to mediate critical functions in the central nervous system. One splice variant activates trans-cellular signaling in a LPHN-dependent manner, whereas the other induces inhibitory postsynaptic differentiation. These results highlight the unusual structural organization of TENs giving rise to their multifarious functions. | ||
, PMID:29677516<ref>PMID:29677516</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
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<references/> | <references/> | ||
__TOC__ | __TOC__ | ||
</ | </SX> | ||
[[Category: | [[Category: Homo sapiens]] | ||
[[Category: Arac | [[Category: Large Structures]] | ||
[[Category: Li | [[Category: Arac D]] | ||
[[Category: Shalev-Benami | [[Category: Li J]] | ||
[[Category: Skiniotis | [[Category: Shalev-Benami M]] | ||
[[Category: Sudhof | [[Category: Skiniotis G]] | ||
[[Category: Sudhof T]] | |||
