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4q3h

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Revision as of 12:03, 11 August 2016

The crystal structure of NHERF1 PDZ2 CXCR2 complex revealed by the NHERF1 CXCR2 chimeric protein

Structural highlights

4q3h is a 2 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

[NHRF1_HUMAN] Defects in SLC9A3R1 are the cause of hypophosphatemic nephrolithiasis/osteoporosis type 2 (NPHLOP2) [MIM:612287]. Hypophosphatemia results from idiopathic renal phosphate loss. It contributes to the pathogenesis of hypophosphatemic urolithiasis (formation of urinary calculi) as well to that of hypophosphatemic osteoporosis (bone demineralization).^[1] ^[2]

Function

[NHRF1_HUMAN] Scaffold protein that connects plasma membrane proteins with members of the ezrin/moesin/radixin family and thereby helps to link them to the actin cytoskeleton and to regulate their surface expression. Necessary for recycling of internalized ADRB2. Was first known to play a role in the regulation of the activity and subcellular location of SLC9A3. Necessary for cAMP-mediated phosphorylation and inhibition of SLC9A3. May enhance Wnt signaling. May participate in HTR4 targeting to microvilli (By similarity). Involved in the regulation of phosphate reabsorption in the renal proximal tubules.^[3] ^[4] ^[5] ^[6]

Publication Abstract from PubMed

The formation of CXCR2-NHERF1-PLCbeta2 macromolecular complex in neutrophils regulates CXCR2 signaling and plays a key role in neutrophil chemotaxis and transepithelial neutrophilic migration. However, NHERF1 by itself, with only two PDZ domains, has a limited capacity in scaffolding the multiprotein-complex formation. Here we report the crystal structure of the NHERF1 PDZ2 domain in complex with the C-terminal CXCR2 sequence. The structure reveals that the PDZ2-CXCR2 binding specificity is achieved by numerous hydrogen bonds and hydrophobic contacts with the last four CXCR2 residues contributing to specific interactions. The structure also reveals two probable modes of PDZ2 dimerization where the two canonical ligand-binding pockets are well separated and orientated in a unique parallel fashion. This study provides not only the structural basis for the PDZ-mediated NHERF1-CXCR2 interaction, but also an additional example of how PDZ domains may dimerize, which both could prove valuable in understanding NHERF1 complex-scaffolding function in neutrophils.

Crystal structure of the NHERF1 PDZ2 domain in complex with the chemokine receptor CXCR2 reveals probable modes of PDZ2 dimerization.,Holcomb J, Jiang Y, Guan X, Trescott L, Lu G, Hou Y, Wang S, Brunzelle J, Sirinupong N, Li C, Yang Z Biochem Biophys Res Commun. 2014 Apr 24. pii: S0006-291X(14)00736-0. doi:, 10.1016/j.bbrc.2014.04.085. PMID:24768637^[7]

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

References

↑ Karim Z, Gerard B, Bakouh N, Alili R, Leroy C, Beck L, Silve C, Planelles G, Urena-Torres P, Grandchamp B, Friedlander G, Prie D. NHERF1 mutations and responsiveness of renal parathyroid hormone. N Engl J Med. 2008 Sep 11;359(11):1128-35. PMID:18784102 doi:359/11/1128
↑ Courbebaisse M, Leroy C, Bakouh N, Salaun C, Beck L, Grandchamp B, Planelles G, Hall RA, Friedlander G, Prie D. A new human NHERF1 mutation decreases renal phosphate transporter NPT2a expression by a PTH-independent mechanism. PLoS One. 2012;7(4):e34764. doi: 10.1371/journal.pone.0034764. Epub 2012 Apr 10. PMID:22506049 doi:10.1371/journal.pone.0034764
↑ Murthy A, Gonzalez-Agosti C, Cordero E, Pinney D, Candia C, Solomon F, Gusella J, Ramesh V. NHE-RF, a regulatory cofactor for Na(+)-H+ exchange, is a common interactor for merlin and ERM (MERM) proteins. J Biol Chem. 1998 Jan 16;273(3):1273-6. PMID:9430655
↑ Yun CH, Oh S, Zizak M, Steplock D, Tsao S, Tse CM, Weinman EJ, Donowitz M. cAMP-mediated inhibition of the epithelial brush border Na+/H+ exchanger, NHE3, requires an associated regulatory protein. Proc Natl Acad Sci U S A. 1997 Apr 1;94(7):3010-5. PMID:9096337
↑ Cao TT, Deacon HW, Reczek D, Bretscher A, von Zastrow M. A kinase-regulated PDZ-domain interaction controls endocytic sorting of the beta2-adrenergic receptor. Nature. 1999 Sep 16;401(6750):286-90. PMID:10499588 doi:10.1038/45816
↑ Karim Z, Gerard B, Bakouh N, Alili R, Leroy C, Beck L, Silve C, Planelles G, Urena-Torres P, Grandchamp B, Friedlander G, Prie D. NHERF1 mutations and responsiveness of renal parathyroid hormone. N Engl J Med. 2008 Sep 11;359(11):1128-35. PMID:18784102 doi:359/11/1128
↑ Holcomb J, Jiang Y, Guan X, Trescott L, Lu G, Hou Y, Wang S, Brunzelle J, Sirinupong N, Li C, Yang Z. Crystal structure of the NHERF1 PDZ2 domain in complex with the chemokine receptor CXCR2 reveals probable modes of PDZ2 dimerization. Biochem Biophys Res Commun. 2014 Apr 24. pii: S0006-291X(14)00736-0. doi:, 10.1016/j.bbrc.2014.04.085. PMID:24768637 doi:http://dx.doi.org/10.1016/j.bbrc.2014.04.085

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/4q3h"

@@ Line 1: / Line 1: @@
 ==The crystal structure of NHERF1 PDZ2 CXCR2 complex revealed by the NHERF1 CXCR2 chimeric protein==
 <StructureSection load='4q3h' size='340' side='right' caption='[[4q3h]], [[Resolution|resolution]] 1.44&Aring;' scene=''>
 == Structural highlights ==
 <table><tr><td colspan='2'>[[4q3h]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4Q3H OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4Q3H FirstGlance]. <br>
-</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=4q3h FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4q3h OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4q3h RCSB], [http://www.ebi.ac.uk/pdbsum/4q3h PDBsum]</span></td></tr>
+</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=4q3h FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4q3h OCA], [http://pdbe.org/4q3h PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4q3h RCSB], [http://www.ebi.ac.uk/pdbsum/4q3h PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4q3h ProSAT]</span></td></tr>
 </table>
 == Disease ==
@@ Line 17: / Line 18: @@
 From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
 </div>
+<div class="pdbe-citations 4q3h" style="background-color:#fffaf0;"></div>
 == References ==
 <references/>

4q3h

From Proteopedia

Revision as of 12:03, 11 August 2016

The crystal structure of NHERF1 PDZ2 CXCR2 complex revealed by the NHERF1 CXCR2 chimeric protein

Structural highlights

Disease

Function

Publication Abstract from PubMed

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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