5vqf

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<StructureSection load='5vqf' size='340' side='right' caption='[[5vqf]], [[Resolution|resolution]] 2.90&Aring;' scene=''>
<StructureSection load='5vqf' size='340' side='right' caption='[[5vqf]], [[Resolution|resolution]] 2.90&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
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<table><tr><td colspan='2'>[[5vqf]] is a 4 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5VQF OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5VQF FirstGlance]. <br>
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<table><tr><td colspan='2'>[[5vqf]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Pig Pig]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5VQF OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=5VQF FirstGlance]. <br>
</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=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr>
</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=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3rjr|3rjr]]</td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3rjr|3rjr]]</td></tr>
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<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">TGFB1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9823 PIG])</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=5vqf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5vqf OCA], [http://pdbe.org/5vqf PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5vqf RCSB], [http://www.ebi.ac.uk/pdbsum/5vqf PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5vqf ProSAT]</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=5vqf FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5vqf OCA], [http://pdbe.org/5vqf PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=5vqf RCSB], [http://www.ebi.ac.uk/pdbsum/5vqf PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=5vqf ProSAT]</span></td></tr>
</table>
</table>
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<div style="background-color:#fffaf0;">
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
== Publication Abstract from PubMed ==
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Transforming growth factor (TGF)-beta is stored in the extracellular matrix as a latent complex with its prodomain. Activation of TGF-beta1 requires the binding of alpha(v) integrin to an RGD sequence in the prodomain and exertion of force on this domain, which is held in the extracellular matrix by latent TGF-beta binding proteins. Crystals of dimeric porcine proTGF-beta1 reveal a ring-shaped complex, a novel fold for the prodomain, and show how the prodomain shields the growth factor from recognition by receptors and alters its conformation. Complex formation between alpha(v)beta(6) integrin and the prodomain is insufficient for TGF-beta1 release. Force-dependent activation requires unfastening of a 'straitjacket' that encircles each growth-factor monomer at a position that can be locked by a disulphide bond. Sequences of all 33 TGF-beta family members indicate a similar prodomain fold. The structure provides insights into the regulation of a family of growth and differentiation factors of fundamental importance in morphogenesis and homeostasis.
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Transforming growth factor (TGF)-beta is synthesized as a proprotein that dimerizes in the endoplasmic reticulum. After processing in the Golgi to cleave the N-terminal prodomain from the C-terminal growth factor (GF) domain in each monomer, pro-TGF-beta is secreted and stored in latent complexes. It is unclear which prodomain and GF monomer are linked prior to proprotein convertase (PC) cleavage, and how much conformational change occurs following cleavage. We have determined a structure of pro-TGF-beta1 with the PC cleavage site mutated, to mimic the structure of the TGF-beta1 proprotein. Structure, mutation, and model building demonstrate that the prodomain arm domain in one monomer is linked to the GF that interacts with the arm domain in the other monomer in the dimeric structure, i.e., the prodomain arm domain and GF domain in each monomer are swapped. Swapping has important implications for the mechanism of biosynthesis in the TGF-beta family and is relevant to the mechanism for preferential formation of heterodimers over homodimers for some members of the TGF-beta family. Our structure, together with two previous ones, also provides insights into which regions of the prodomain-GF complex are highly structurally conserved, and which are perturbed by crystal lattice contacts.
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Latent TGF-beta structure and activation.,Shi M, Zhu J, Wang R, Chen X, Mi L, Walz T, Springer TA Nature. 2011 Jun 15;474(7351):343-9. doi: 10.1038/nature10152. PMID:21677751<ref>PMID:21677751</ref>
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Prodomain-Growth Factor Swapping in the Structure of pro-TGF-beta1.,Zhao B, Xu S, Dong X, Lu C, Springer TA J Biol Chem. 2017 Nov 5. pii: jbc.M117.809657. doi: 10.1074/jbc.M117.809657. PMID:29109152<ref>PMID:29109152</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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__TOC__
__TOC__
</StructureSection>
</StructureSection>
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[[Category: Pig]]
[[Category: Dong, X]]
[[Category: Dong, X]]
[[Category: Lu, C]]
[[Category: Lu, C]]

Revision as of 10:30, 22 November 2017

Crystal Structure of pro-TGF-beta 1

5vqf, resolution 2.90Å

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