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3ici

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Revision as of 09:56, 19 December 2018

Crystal structure of cyclophilin B in complex with calmegin fragment

Structural highlights

3ici is a 3 chain structure with sequence from Canlf and Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Ligands:	,
Related:	3ich
Gene:	PPIB, CYPB (HUMAN), CANX (CANLF)
Activity:	Peptidylprolyl isomerase, with EC number 5.2.1.8
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Disease

[PPIB_HUMAN] Defects in PPIB are the cause of osteogenesis imperfecta type 9 (OI9) [MIM:259440]. OI9 is a connective tissue disorder characterized by bone fragility, low bone mass and bowing of limbs due to multiple fractures. Short limb dwarfism and blue sclerae are observed in some but not all patients.^[1] ^[2]

Function

[PPIB_HUMAN] PPIases accelerate the folding of proteins. It catalyzes the cis-trans isomerization of proline imidic peptide bonds in oligopeptides.

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

Little is known about how chaperones in the endoplasmic reticulum are organized into complexes to assist in the proper folding of secreted proteins. One notable exception is the complex of ERp57 and calnexin that functions as part the calnexin cycle to direct disulfide bond formation in N-glycoproteins. Here, we report three new complexes composed of the peptidyl prolyl cis-trans isomerase cyclophilin B and any of the lectin chaperones: calnexin (CNX), calreticulin (CRT), or calmegin (CMG). The 1.7 A crystal structure of cyclophilin with the proline-rich P-domain of CMG reveals that binding is mediated by the same surface that binds ERp57. We use NMR titrations and mutagenesis to measure low micromolar binding of cyclophilin to all three lectin chaperones and identify essential interfacial residues. The immunosuppressant cyclosporin A did not affect complex formation, confirming the functional independence of the P-domain-binding and proline isomerization sites of cyclophilin. Our results reveal the P-domain functions as a unique protein-protein interaction domain and implicate a peptidyl prolyl isomerase as a new element in the calnexin cycle.

Structural basis of cyclophilin B binding by the calnexin/calreticulin P-domain.,Kozlov G, Bastos-Aristizabal S, Maattanen P, Rosenauer A, Zheng F, Killikelly A, Trempe JF, Thomas DY, Gehring K J Biol Chem. 2010 Sep 3. PMID:20801878^[3]

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

References

↑ van Dijk FS, Nesbitt IM, Zwikstra EH, Nikkels PG, Piersma SR, Fratantoni SA, Jimenez CR, Huizer M, Morsman AC, Cobben JM, van Roij MH, Elting MW, Verbeke JI, Wijnaendts LC, Shaw NJ, Hogler W, McKeown C, Sistermans EA, Dalton A, Meijers-Heijboer H, Pals G. PPIB mutations cause severe osteogenesis imperfecta. Am J Hum Genet. 2009 Oct;85(4):521-7. doi: 10.1016/j.ajhg.2009.09.001. Epub 2009 , Sep 24. PMID:19781681 doi:10.1016/j.ajhg.2009.09.001
↑ Barnes AM, Carter EM, Cabral WA, Weis M, Chang W, Makareeva E, Leikin S, Rotimi CN, Eyre DR, Raggio CL, Marini JC. Lack of cyclophilin B in osteogenesis imperfecta with normal collagen folding. N Engl J Med. 2010 Feb 11;362(6):521-8. doi: 10.1056/NEJMoa0907705. Epub 2010 Jan, 20. PMID:20089953 doi:10.1056/NEJMoa0907705
↑ Kozlov G, Bastos-Aristizabal S, Maattanen P, Rosenauer A, Zheng F, Killikelly A, Trempe JF, Thomas DY, Gehring K. Structural basis of cyclophilin B binding by the calnexin/calreticulin P-domain. J Biol Chem. 2010 Sep 3. PMID:20801878 doi:10.1074/jbc.M110.160101

1 Structural highlights
2 Disease
3 Function
4 Evolutionary Conservation
5 Publication Abstract from PubMed
6 See Also
7 References

Proteopedia Page Contributors and Editors (what is this?)

OCA

Retrieved from "http://52.214.119.220/wiki/index.php/3ici"

@@ Line 3: / Line 3: @@
 <StructureSection load='3ici' size='340' side='right' caption='[[3ici]], [[Resolution|resolution]] 1.70&Aring;' scene=''>
 == Structural highlights ==
-<table><tr><td colspan='2'>[[3ici]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Canfa Canfa] and [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3ICI OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3ICI FirstGlance]. <br>
+<table><tr><td colspan='2'>[[3ici]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Canlf Canlf] and [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3ICI OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3ICI FirstGlance]. <br>
 </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=MES:2-(N-MORPHOLINO)-ETHANESULFONIC+ACID'>MES</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>
 <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3ich|3ich]]</td></tr>
-<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">PPIB, CYPB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN]), CANX ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9615 CANFA])</td></tr>
+<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">PPIB, CYPB ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN]), CANX ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9615 CANLF])</td></tr>
 <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Peptidylprolyl_isomerase Peptidylprolyl isomerase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=5.2.1.8 5.2.1.8] </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=3ici FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3ici OCA], [http://pdbe.org/3ici PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3ici RCSB], [http://www.ebi.ac.uk/pdbsum/3ici PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3ici ProSAT]</span></td></tr>
@@ Line 18: / Line 18: @@
 Check<jmol>
   <jmolCheckbox>
-    <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ic/3ici_consurf.spt"</scriptWhenChecked>
+    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ic/3ici_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
@@ Line 40: / Line 40: @@
 __TOC__
 </StructureSection>
-[[Category: Canfa]]
+[[Category: Canlf]]
 [[Category: Human]]
 [[Category: Peptidylprolyl isomerase]]

3ici

From Proteopedia

Revision as of 09:56, 19 December 2018

Crystal structure of cyclophilin B in complex with calmegin fragment

Structural highlights

Disease

Function

Evolutionary Conservation

Publication Abstract from PubMed

See Also

References

Contents

Proteopedia Page Contributors and Editors (what is this?)

Views

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