View source for 3tv8


==Pharmacological Chaperoning in Human alpha-Galactosidase==
<StructureSection load='3tv8' size='340' side='right'caption='[[3tv8]], [[Resolution|resolution]] 2.64&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3tv8]] 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=3TV8 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3TV8 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]] 2.639&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=2PE:NONAETHYLENE+GLYCOL'>2PE</scene>, <scene name='pdbligand=BMA:BETA-D-MANNOSE'>BMA</scene>, <scene name='pdbligand=DGJ:(2R,3S,4R,5S)-2-(HYDROXYMETHYL)PIPERIDINE-3,4,5-TRIOL'>DGJ</scene>, <scene name='pdbligand=MAN:ALPHA-D-MANNOSE'>MAN</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</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=3tv8 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3tv8 OCA], [https://pdbe.org/3tv8 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3tv8 RCSB], [https://www.ebi.ac.uk/pdbsum/3tv8 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3tv8 ProSAT]</span></td></tr>
</table>
== Disease ==
[https://www.uniprot.org/uniprot/AGAL_HUMAN AGAL_HUMAN] Defects in GLA are the cause of Fabry disease (FD) [MIM:[https://omim.org/entry/301500 301500]. FD is a rare X-linked sphingolipidosis disease where glycolipid accumulates in many tissues. The disease consists of an inborn error of glycosphingolipid catabolism. FD patients show systemic accumulation of globotriaoslyceramide (Gb3) and related glycosphingolipids in the plasma and cellular lysosomes throughout the body. Clinical recognition in males results from characteristic skin lesions (angiokeratomas) over the lower trunk. Patients may show ocular deposits, febrile episodes, and burning pain in the extremities. Death results from renal failure, cardiac or cerebral complications of hypertension or other vascular disease. Heterozygous females may exhibit the disorder in an attenuated form, they are more likely to show corneal opacities.<ref>PMID:2152885</ref> <ref>PMID:1846223</ref> <ref>PMID:2171331</ref> <ref>PMID:2539398</ref> <ref>PMID:1315715</ref> <ref>PMID:7504405</ref> <ref>PMID:8395937</ref> <ref>PMID:8069316</ref> <ref>PMID:7531540</ref> <ref>PMID:7575533</ref> <ref>PMID:7759078</ref> <ref>PMID:7599642</ref> <ref>PMID:7596372</ref> <ref>PMID:8738659</ref> <ref>PMID:8875188</ref> <ref>PMID:8834244</ref> <ref>PMID:8931708</ref> <ref>PMID:8807334</ref> <ref>PMID:8863162</ref> <ref>PMID:9105656</ref> <ref>PMID:9100224</ref> <ref>PMID:9554750</ref> <ref>PMID:9452068</ref> <ref>PMID:9452090</ref> <ref>PMID:9452111</ref> <ref>PMID:10208848</ref> <ref>PMID:10090526</ref> <ref>PMID:10838196</ref> <ref>PMID:10666480</ref> <ref>PMID:11076046</ref> <ref>PMID:10916280</ref> <ref>PMID:11295840</ref> <ref>PMID:11668641</ref> <ref>PMID:11889412</ref> <ref>PMID:12694230</ref> <ref>PMID:12786754</ref> <ref>PMID:15162124</ref> <ref>PMID:15712228</ref> <ref>PMID:16533976</ref> <ref>PMID:19621417</ref> 
== Function ==
[https://www.uniprot.org/uniprot/AGAL_HUMAN AGAL_HUMAN] 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Fabry disease patients show a deficiency in the activity of the lysosomal enzyme alpha-galactosidase (alpha-GAL or alpha-Gal A). One proposed treatment for Fabry disease is pharmacological chaperone therapy, where a small molecule stabilizes the alpha-GAL protein, leading to increased enzymatic activity. Using enzyme kinetics, tryptophan fluorescence, circular dichroism, and proteolysis assays, we show that the pharmacological chaperones 1-deoxygalactonojirimycin (DGJ) and galactose stabilize the human alpha-GAL glycoprotein. Crystal structures of complexes of alpha-GAL and chaperones explain the molecular basis for the higher potency of DGJ over galactose. Using site-directed mutagenesis, we show the higher potency of DGJ results from an ionic interaction with D170. We propose that protonation of D170 in acidic conditions leads to weaker binding of DGJ. The results establish a biochemical basis for pharmacological chaperone therapy applicable to other protein misfolding diseases.

The Molecular Basis of Pharmacological Chaperoning in Human alpha-Galactosidase.,Guce AI, Clark NE, Rogich JJ, Garman SC Chem Biol. 2011 Dec 23;18(12):1521-6. PMID:22195554<ref>PMID:22195554</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 3tv8" style="background-color:#fffaf0;"></div>

==See Also==
*[[Galactosidase 3D structures|Galactosidase 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Clark NE]]
[[Category: Garman SC]]
[[Category: Guce AI]]
[[Category: Rogich JJ]]