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.

4q4b

From Proteopedia

(Difference between revisions)

Jump to: navigation, search

Revision as of 10:57, 11 August 2016

Crystal structure of LIMP-2 (space group C2221)

Structural highlights

4q4b is a 1 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	, , ,
Related:	4q4f
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

[SCRB2_HUMAN] Unverricht-Lundborg disease;Gaucher disease type 1;Action myoclonus - renal failure syndrome. The disease is caused by mutations affecting the gene represented in this entry. Genetic variants in SCARB2 can act as modifier of the phenotypic expression and severity of Gaucher disease.

Function

[SCRB2_HUMAN] Acts as a lysosomal receptor for glucosylceramidase (GBA) targeting.^[1]

Publication Abstract from PubMed

The integral membrane protein LIMP-2 has been a paradigm for mannose 6-phosphate receptor (MPR) independent lysosomal targeting, binding to beta-glucocerebrosidase (beta-GCase) and directing it to the lysosome, before dissociating in the late-endosomal/lysosomal compartments. Here we report structural results illuminating how LIMP-2 binds and releases beta-GCase according to changes in pH, via a histidine trigger, and suggesting that LIMP-2 localizes the ceramide portion of the substrate adjacent to the beta-GCase catalytic site. Remarkably, we find that LIMP-2 bears P-Man9GlcNAc2 covalently attached to residue N325, and that it binds MPR, via mannose 6-phosphate, with a similar affinity to that observed between LIMP-2 and beta-GCase. The binding sites for beta-GCase and the MPR are functionally separate, so that a stable ternary complex can be formed. By fluorescence lifetime imaging microscopy, we also demonstrate that LIMP-2 interacts with MPR in living cells. These results revise the accepted view of LIMP-2-beta-GCase lysosomal targeting.

Lysosome sorting of beta-glucocerebrosidase by LIMP-2 is targeted by the mannose 6-phosphate receptor.,Zhao Y, Ren J, Padilla-Parra S, Fry EE, Stuart DI Nat Commun. 2014 Jul 14;5:4321. doi: 10.1038/ncomms5321. PMID:25027712^[2]

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

References

↑ Reczek D, Schwake M, Schroder J, Hughes H, Blanz J, Jin X, Brondyk W, Van Patten S, Edmunds T, Saftig P. LIMP-2 is a receptor for lysosomal mannose-6-phosphate-independent targeting of beta-glucocerebrosidase. Cell. 2007 Nov 16;131(4):770-83. PMID:18022370 doi:http://dx.doi.org/10.1016/j.cell.2007.10.018
↑ Zhao Y, Ren J, Padilla-Parra S, Fry EE, Stuart DI. Lysosome sorting of beta-glucocerebrosidase by LIMP-2 is targeted by the mannose 6-phosphate receptor. Nat Commun. 2014 Jul 14;5:4321. doi: 10.1038/ncomms5321. PMID:25027712 doi:http://dx.doi.org/10.1038/ncomms5321

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/4q4b"

@@ Line 1: / Line 1: @@
 ==Crystal structure of LIMP-2 (space group C2221)==
 <StructureSection load='4q4b' size='340' side='right' caption='[[4q4b]], [[Resolution|resolution]] 2.82&Aring;' scene=''>
@@ Line 5: / Line 6: @@
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=BMA:BETA-D-MANNOSE'>BMA</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene>, <scene name='pdbligand=MAN:ALPHA-D-MANNOSE'>MAN</scene></td></tr>
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4q4f|4q4f]]</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=4q4b FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4q4b OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4q4b RCSB], [http://www.ebi.ac.uk/pdbsum/4q4b PDBsum]</span></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=4q4b FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4q4b OCA], [http://pdbe.org/4q4b PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4q4b RCSB], [http://www.ebi.ac.uk/pdbsum/4q4b PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4q4b ProSAT]</span></td></tr>
 </table>
 == Disease ==
@@ Line 19: / Line 20: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 4q4b" style="background-color:#fffaf0;"></div>
 == References ==
 <references/>

4q4b

From Proteopedia

Revision as of 10:57, 11 August 2016

Crystal structure of LIMP-2 (space group C2221)

Structural highlights

Disease

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

Personal tools

Navigation

Search

Toolbox