View source for 8cs9


==Composite reconstruction of Class 1 of the erythrocyte ankyrin-1 complex==
<StructureSection load='8cs9' size='340' side='right'caption='[[8cs9]], [[Resolution|resolution]] 2.74&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[8cs9]] is a 18 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=8CS9 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8CS9 FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 2.74&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=AJP:(25R)-2beta,15alpha-dihydroxy-5beta,8alpha,10alpha,14beta,17beta-spirostan-3alpha-yl+beta-D-glucopyranosyl-(1- 3)-beta-D-galactopyranosyl-(1- 2)-[beta-D-xylopyranosyl-(1- 3)]-beta-D-glucopyranosyl-(1- 4)-beta-D-galactopyranoside'>AJP</scene>, <scene name='pdbligand=CLR:CHOLESTEROL'>CLR</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=PIO:[(2R)-2-OCTANOYLOXY-3-[OXIDANYL-[(1R,2R,3S,4R,5R,6S)-2,3,6-TRIS(OXIDANYL)-4,5-DIPHOSPHONOOXY-CYCLOHEXYL]OXY-PHOSPHORYL]OXY-PROPYL]+OCTANOATE'>PIO</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=8cs9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8cs9 OCA], [https://pdbe.org/8cs9 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8cs9 RCSB], [https://www.ebi.ac.uk/pdbsum/8cs9 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8cs9 ProSAT]</span></td></tr>
</table>
== Disease ==
[https://www.uniprot.org/uniprot/ANK1_HUMAN ANK1_HUMAN] Defects in ANK1 are a cause of spherocytosis type 1 (SPH1) [MIM:[https://omim.org/entry/182900 182900]; also called hereditary spherocytosis type 1 (HS1). Spherocytosis is a hematologic disorder leading to chronic hemolytic anemia and characterized by numerous abnormally shaped erythrocytes which are generally spheroidal. Inheritance can be autosomal dominant or recessive.<ref>PMID:8640229</ref> <ref>PMID:11102985</ref> 
== Function ==
[https://www.uniprot.org/uniprot/ANK1_HUMAN ANK1_HUMAN] Attaches integral membrane proteins to cytoskeletal elements; binds to the erythrocyte membrane protein band 4.2, to Na-K ATPase, to the lymphocyte membrane protein GP85, and to the cytoskeletal proteins fodrin, tubulin, vimentin and desmin. Erythrocyte ankyrins also link spectrin (beta chain) to the cytoplasmic domain of the erythrocytes anion exchange protein; they retain most or all of these binding functions.<ref>PMID:12456646</ref>   Isoform Mu17 together with obscurin in skeletal muscle may provide a molecular link between the sarcoplasmic reticulum and myofibrils.<ref>PMID:12456646</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
The stability and shape of the erythrocyte membrane is provided by the ankyrin-1 complex, but how it tethers the spectrin-actin cytoskeleton to the lipid bilayer and the nature of its association with the band 3 anion exchanger and the Rhesus glycoproteins remains unknown. Here we present structures of ankyrin-1 complexes purified from human erythrocytes. We reveal the architecture of a core complex of ankyrin-1, the Rhesus proteins RhAG and RhCE, the band 3 anion exchanger, protein 4.2, glycophorin A and glycophorin B. The distinct T-shaped conformation of membrane-bound ankyrin-1 facilitates recognition of RhCE and, unexpectedly, the water channel aquaporin-1. Together, our results uncover the molecular details of ankyrin-1 association with the erythrocyte membrane, and illustrate the mechanism of ankyrin-mediated membrane protein clustering.

Architecture of the human erythrocyte ankyrin-1 complex.,Vallese F, Kim K, Yen LY, Johnston JD, Noble AJ, Cali T, Clarke OB Nat Struct Mol Biol. 2022 Jul;29(7):706-718. doi: 10.1038/s41594-022-00792-w. , Epub 2022 Jul 14. PMID:35835865<ref>PMID:35835865</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 8cs9" style="background-color:#fffaf0;"></div>

==See Also==
*[[Ankyrin 3D structures|Ankyrin 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Cali T]]
[[Category: Clarke OB]]
[[Category: Johnston JD]]
[[Category: Kim K]]
[[Category: Noble AJ]]
[[Category: Vallese F]]
[[Category: Yen LY]]