View source for 4cbz


==Notch ligand, Jagged-1, contains an N-terminal C2 domain==
<StructureSection load='4cbz' size='340' side='right'caption='[[4cbz]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4cbz]] is a 2 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=4CBZ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4CBZ FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.5&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=FUC:ALPHA-L-FUCOSE'>FUC</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</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=4cbz FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4cbz OCA], [https://pdbe.org/4cbz PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4cbz RCSB], [https://www.ebi.ac.uk/pdbsum/4cbz PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4cbz ProSAT]</span></td></tr>
</table>
== Disease ==
[https://www.uniprot.org/uniprot/JAG1_HUMAN JAG1_HUMAN] Defects in JAG1 are the cause of Alagille syndrome type 1 (ALGS1) [MIM:[https://omim.org/entry/118450 118450]. Alagille syndrome is an autosomal dominant multisystem disorder defined clinically by hepatic bile duct paucity and cholestasis in association with cardiac, skeletal, and ophthalmologic manifestations. There are characteristic facial features and less frequent clinical involvement of the renal and vascular systems.<ref>PMID:9207788</ref> <ref>PMID:9207787</ref> <ref>PMID:9585603</ref> <ref>PMID:10220506</ref> <ref>PMID:10533065</ref> <ref>PMID:11058898</ref> <ref>PMID:11157803</ref> <ref>PMID:11139247</ref> <ref>PMID:11180599</ref> <ref>PMID:12442286</ref> <ref>PMID:12497640</ref> <ref>PMID:15712272</ref> <ref>PMID:16575836</ref>   Defects in JAG1 are a cause of tetralogy of Fallot (TOF) [MIM:[https://omim.org/entry/187500 187500]. TOF is a congenital heart anomaly which consists of pulmonary stenosis, ventricular septal defect, dextroposition of the aorta (aorta is on the right side instead of the left) and hypertrophy of the right ventricle. This condition results in a blue baby at birth due to inadequate oxygenation. Surgical correction is emergent.<ref>PMID:9207787</ref> <ref>PMID:11152664</ref> 
== Function ==
[https://www.uniprot.org/uniprot/JAG1_HUMAN JAG1_HUMAN] Ligand for multiple Notch receptors and involved in the mediation of Notch signaling. May be involved in cell-fate decisions during hematopoiesis. Seems to be involved in early and late stages of mammalian cardiovascular development. Inhibits myoblast differentiation (By similarity). Enhances fibroblast growth factor-induced angiogenesis (in vitro).<ref>PMID:9462510</ref> <ref>PMID:18660822</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The Notch pathway is a core cell-cell signaling system in metazoan organisms with key roles in cell-fate determination, stem cell maintenance, immune system activation, and angiogenesis. Signals are initiated by extracellular interactions of the Notch receptor with Delta/Serrate/Lag-2 (DSL) ligands, whose structure is highly conserved throughout evolution. To date, no structure or activity has been associated with the extreme N termini of the ligands, even though numerous mutations in this region of Jagged-1 ligand lead to human disease. Here, we demonstrate that the N terminus of human Jagged-1 is a C2 phospholipid recognition domain that binds phospholipid bilayers in a calcium-dependent fashion. Furthermore, we show that this activity is shared by a member of the other class of Notch ligands, human Delta-like-1, and the evolutionary distant Drosophila Serrate. Targeted mutagenesis of Jagged-1 C2 domain residues implicated in calcium-dependent phospholipid binding leaves Notch interactions intact but can reduce Notch activation. These results reveal an important and previously unsuspected role for phospholipid recognition in control of this key signaling system.

Structural Analysis Uncovers Lipid-Binding Properties of Notch Ligands.,Chillakuri CR, Sheppard D, Ilagan MX, Holt LR, Abbott F, Liang S, Kopan R, Handford PA, Lea SM Cell Rep. 2013 Nov 13. pii: S2211-1247(13)00613-X. doi:, 10.1016/j.celrep.2013.10.029. PMID:24239355<ref>PMID:24239355</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4cbz" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Abbott F]]
[[Category: Chilakuri CR]]
[[Category: Handford PA]]
[[Category: Holt LR]]
[[Category: Ilagan MXG]]
[[Category: Kopan R]]
[[Category: Lea SM]]
[[Category: Liang S]]
[[Category: Sheppard D]]