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.

5y30

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Revision as of 07:04, 14 October 2020

Crystal structure of LGI1 LRR domain

Structural highlights

5y30 is a 1 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

[LGI1_HUMAN] Autosomal dominant epilepsy with auditory features. The disease is caused by mutations affecting the gene represented in this entry.

Function

[LGI1_HUMAN] Regulates voltage-gated potassium channels assembled from KCNA1, KCNA4 and KCNAB1. It slows down channel inactivation by precluding channel closure mediated by the KCNAB1 subunit. Ligand for ADAM22 that positively regulates synaptic transmission mediated by AMPA-type glutamate receptors (By similarity). Plays a role in suppressing the production of MMP1/3 through the phosphatidylinositol 3-kinase/ERK pathway. May play a role in the control of neuroblastoma cell survival.^[1] ^[2]

Publication Abstract from PubMed

Epilepsy is a common brain disorder throughout history. Epilepsy-related ligand-receptor complex, LGI1-ADAM22, regulates synaptic transmission and has emerged as a determinant of brain excitability, as their mutations and acquired LGI1 autoantibodies cause epileptic disorders in human. Here, we report the crystal structure of human LGI1-ADAM22 complex, revealing a 2:2 heterotetrameric assembly. The hydrophobic pocket of the C-terminal epitempin-repeat (EPTP) domain of LGI1 binds to the metalloprotease-like domain of ADAM22. The N-terminal leucine-rich repeat and EPTP domains of LGI1 mediate the intermolecular LGI1-LGI1 interaction. A pathogenic R474Q mutation of LGI1, which does not exceptionally affect either the secretion or the ADAM22 binding, is located in the LGI1-LGI1 interface and disrupts the higher-order assembly of the LGI1-ADAM22 complex in vitro and in a mouse model for familial epilepsy. These studies support the notion that the LGI1-ADAM22 complex functions as the trans-synaptic machinery for precise synaptic transmission.

Structural basis of epilepsy-related ligand-receptor complex LGI1-ADAM22.,Yamagata A, Miyazaki Y, Yokoi N, Shigematsu H, Sato Y, Goto-Ito S, Maeda A, Goto T, Sanbo M, Hirabayashi M, Shirouzu M, Fukata Y, Fukata M, Fukai S Nat Commun. 2018 Apr 18;9(1):1546. doi: 10.1038/s41467-018-03947-w. PMID:29670100^[3]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Kunapuli P, Kasyapa CS, Hawthorn L, Cowell JK. LGI1, a putative tumor metastasis suppressor gene, controls in vitro invasiveness and expression of matrix metalloproteinases in glioma cells through the ERK1/2 pathway. J Biol Chem. 2004 May 28;279(22):23151-7. doi: 10.1074/jbc.M314192200. Epub 2004 , Mar 26. PMID:15047712 doi:http://dx.doi.org/10.1074/jbc.M314192200
↑ Gabellini N, Masola V, Quartesan S, Oselladore B, Nobile C, Michelucci R, Curtarello M, Parolin C, Palu G. Increased expression of LGI1 gene triggers growth inhibition and apoptosis of neuroblastoma cells. J Cell Physiol. 2006 Jun;207(3):711-21. doi: 10.1002/jcp.20627. PMID:16518856 doi:http://dx.doi.org/10.1002/jcp.20627
↑ Yamagata A, Miyazaki Y, Yokoi N, Shigematsu H, Sato Y, Goto-Ito S, Maeda A, Goto T, Sanbo M, Hirabayashi M, Shirouzu M, Fukata Y, Fukata M, Fukai S. Structural basis of epilepsy-related ligand-receptor complex LGI1-ADAM22. Nat Commun. 2018 Apr 18;9(1):1546. doi: 10.1038/s41467-018-03947-w. PMID:29670100 doi:http://dx.doi.org/10.1038/s41467-018-03947-w

1 Structural highlights
2 Disease
3 Function
4 Publication Abstract from PubMed
5 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/5y30"

@@ Line 1: / Line 1: @@
 ==Crystal structure of LGI1 LRR domain==
-<StructureSection load='5y30' size='340' side='right' caption='[[5y30]], [[Resolution|resolution]] 1.78&Aring;' scene=''>
+<StructureSection load='5y30' size='340' side='right'caption='[[5y30]], [[Resolution|resolution]] 1.78&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[5y30]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5Y30 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5Y30 FirstGlance]. <br>
+<table><tr><td colspan='2'>[[5y30]] is a 1 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5Y30 OCA]. For a <b>guided tour on the structure components</b> use [http://proteopedia.org/fgij/fg.htm?mol=5Y30 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=5y30 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5y30 OCA], [http://pdbe.org/5y30 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5y30 RCSB], [http://www.ebi.ac.uk/pdbsum/5y30 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5y30 ProSAT]</span></td></tr>
+</td></tr><tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://proteopedia.org/fgij/fg.htm?mol=5y30 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5y30 OCA], [http://pdbe.org/5y30 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5y30 RCSB], [http://www.ebi.ac.uk/pdbsum/5y30 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5y30 ProSAT]</span></td></tr>
 </table>
 == Disease ==
@@ Line 23: / Line 23: @@
 __TOC__
 </StructureSection>
+[[Category: Large Structures]]
 [[Category: Fukai, S]]
 [[Category: Yamagata, A]]

5y30

From Proteopedia

Revision as of 07:04, 14 October 2020

Crystal structure of LGI1 LRR domain

Structural highlights

Disease

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox