View source for 4ygd


==Crystal structure of ERGIC-53/MCFD2, monoclinic calcium-bound form 2==
<StructureSection load='4ygd' size='340' side='right'caption='[[4ygd]], [[Resolution|resolution]] 2.51&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[4ygd]] is a 8 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=4YGD OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4YGD FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</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=4ygd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4ygd OCA], [https://pdbe.org/4ygd PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4ygd RCSB], [https://www.ebi.ac.uk/pdbsum/4ygd PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4ygd ProSAT]</span></td></tr>
</table>
== Disease ==
[https://www.uniprot.org/uniprot/LMAN1_HUMAN LMAN1_HUMAN] Defects in LMAN1 are THE cause of factor V and factor VIII combined deficiency type 1 (F5F8D1) [MIM:[https://omim.org/entry/227300 227300]; also known as multiple coagulation factor deficiency I (MCFD1). F5F8D1 is an autosomal recessive blood coagulation disorder characterized by bleeding symptoms similar to those in hemophilia or parahemophilia, that are caused by single deficiency of FV or FVIII, respectively. The most common symptoms are epistaxis, menorrhagia, and excessive bleeding during or after trauma. Plasma levels of coagulation factors V and VIII are in the range of 5 to 30% of normal.<ref>PMID:10090935</ref> 
== Function ==
[https://www.uniprot.org/uniprot/LMAN1_HUMAN LMAN1_HUMAN] Mannose-specific lectin. May recognize sugar residues of glycoproteins, glycolipids, or glycosylphosphatidyl inositol anchors and may be involved in the sorting or recycling of proteins, lipids, or both. The LMAN1-MCFD2 complex forms a specific cargo receptor for the ER-to-Golgi transport of selected proteins.<ref>PMID:13130098</ref> <ref>PMID:12717434</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The transmembrane intracellular lectin ER-Golgi intermediate compartment protein 53 (ERGIC-53) and the soluble EF-hand multiple coagulation factor deficiency protein 2 (MCFD2) form a complex that functions as a cargo receptor, trafficking various glycoproteins between the endoplasmic reticulum (ER) and the Golgi apparatus. It has been demonstrated that the carbohydrate-recognition domain (CRD) of ERGIC-53 (ERGIC-53(CRD)) interacts with N-linked glycans on cargo glycoproteins, whereas MCFD2 recognizes polypeptide segments of cargo glycoproteins. Crystal structures of ERGIC-53(CRD) complexed with MCFD2 and mannosyl oligosaccharides have revealed protein-protein and protein-sugar binding modes. In contrast, the polypeptide-recognition mechanism of MCFD2 remains largely unknown. Here, a 1.60 A resolution crystal structure of the ERGIC-53(CRD)-MCFD2 complex is reported, along with three other crystal forms. Comparison of these structures with those previously reported reveal that MCFD2, but not ERGIC-53-CRD, exhibits significant conformational plasticity that may be relevant to its accommodation of various polypeptide ligands.

Crystallographic snapshots of the EF-hand protein MCFD2 complexed with the intracellular lectin ERGIC-53 involved in glycoprotein transport.,Satoh T, Nishio M, Suzuki K, Yagi-Utsumi M, Kamiya Y, Mizushima T, Kato K Acta Crystallogr F Struct Biol Commun. 2020 May 1;76(Pt 5):216-221. doi:, 10.1107/S2053230X20005452. Epub 2020 Apr 29. PMID:32356523<ref>PMID:32356523</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 4ygd" style="background-color:#fffaf0;"></div>

==See Also==
*[[ERGIC-53|ERGIC-53]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Anzai T]]
[[Category: Kamiya Y]]
[[Category: Kato K]]
[[Category: Mizushima T]]
[[Category: Nishio M]]
[[Category: Satoh T]]
[[Category: Suzuki K]]
[[Category: Yagi-Utsumi M]]