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| - | {{STRUCTURE_1khu| PDB=1khu | SCENE= }}
| + | ==Smad1 crystal structure reveals the details of BMP signaling pathway== |
| - | ===Smad1 crystal structure reveals the details of BMP signaling pathway=== | + | <StructureSection load='1khu' size='340' side='right' caption='[[1khu]], [[Resolution|resolution]] 2.50Å' scene=''> |
| - | {{ABSTRACT_PUBMED_11779505}}
| + | == Structural highlights == |
| | + | <table><tr><td colspan='2'>[[1khu]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KHU OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1KHU FirstGlance]. <br> |
| | + | </td></tr><tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1khu FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1khu OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1khu RCSB], [http://www.ebi.ac.uk/pdbsum/1khu PDBsum]</span></td></tr> |
| | + | <table> |
| | + | == Disease == |
| | + | [[http://www.uniprot.org/uniprot/SMAD1_HUMAN SMAD1_HUMAN]] Defects in SMAD1 may be a cause of primary pulmonary hypertension (PPH1) [MIM:[http://omim.org/entry/178600 178600]]. A rare disorder characterized by plexiform lesions of proliferating endothelial cells in pulmonary arterioles. The lesions lead to elevated pulmonary arterial pression, right ventricular failure, and death. The disease can occur from infancy throughout life and it has a mean age at onset of 36 years. Penetrance is reduced. Although familial PPH1 is rare, cases secondary to known etiologies are more common and include those associated with the appetite-suppressant drugs.<ref>PMID:21898662</ref> |
| | + | == Function == |
| | + | [[http://www.uniprot.org/uniprot/SMAD1_HUMAN SMAD1_HUMAN]] Transcriptional modulator activated by BMP (bone morphogenetic proteins) type 1 receptor kinase. SMAD1 is a receptor-regulated SMAD (R-SMAD). SMAD1/OAZ1/PSMB4 complex mediates the degradation of the CREBBP/EP300 repressor SNIP1.<ref>PMID:12097147</ref> |
| | + | == Evolutionary Conservation == |
| | + | [[Image:Consurf_key_small.gif|200px|right]] |
| | + | Check<jmol> |
| | + | <jmolCheckbox> |
| | + | <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/kh/1khu_consurf.spt"</scriptWhenChecked> |
| | + | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> |
| | + | <text>to colour the structure by Evolutionary Conservation</text> |
| | + | </jmolCheckbox> |
| | + | </jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf]. |
| | + | <div style="clear:both"></div> |
| | + | <div style="background-color:#fffaf0;"> |
| | + | == Publication Abstract from PubMed == |
| | + | Phosphorylation of Smad1 at the conserved carboxyl terminal SVS sequence activates BMP signaling. Here we report the crystal structure of the Smad1 MH2 domain in a conformation that reveals the structural effects of phosphorylation and a molecular mechanism for activation. Within a trimeric subunit assembly, the SVS sequence docks near two putative phosphoserine binding pockets of the neighboring molecule, in a position ready to interact upon phosphorylation. The MH2 domain undergoes concerted conformational changes upon activation, which signal Smad1 dissociation from the receptor kinase for subsequent heteromeric assembly with Smad4. Biochemical and modeling studies reveal unique favorable interactions within the Smad1/Smad4 heteromeric interface, providing a structural basis for their association in signaling. |
| | | | |
| - | ==Disease==
| + | Structural basis of Smad1 activation by receptor kinase phosphorylation.,Qin BY, Chacko BM, Lam SS, de Caestecker MP, Correia JJ, Lin K Mol Cell. 2001 Dec;8(6):1303-12. PMID:11779505<ref>PMID:11779505</ref> |
| - | [[http://www.uniprot.org/uniprot/SMAD1_HUMAN SMAD1_HUMAN]] Defects in SMAD1 may be a cause of primary pulmonary hypertension (PPH1) [MIM:[http://omim.org/entry/178600 178600]]. A rare disorder characterized by plexiform lesions of proliferating endothelial cells in pulmonary arterioles. The lesions lead to elevated pulmonary arterial pression, right ventricular failure, and death. The disease can occur from infancy throughout life and it has a mean age at onset of 36 years. Penetrance is reduced. Although familial PPH1 is rare, cases secondary to known etiologies are more common and include those associated with the appetite-suppressant drugs.<ref>PMID:21898662</ref>
| + | |
| | | | |
| - | ==Function==
| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> |
| - | [[http://www.uniprot.org/uniprot/SMAD1_HUMAN SMAD1_HUMAN]] Transcriptional modulator activated by BMP (bone morphogenetic proteins) type 1 receptor kinase. SMAD1 is a receptor-regulated SMAD (R-SMAD). SMAD1/OAZ1/PSMB4 complex mediates the degradation of the CREBBP/EP300 repressor SNIP1.<ref>PMID:12097147</ref>
| + | </div> |
| - | | + | == References == |
| - | ==About this Structure== | + | <references/> |
| - | [[1khu]] is a 4 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KHU OCA].
| + | __TOC__ |
| - | | + | </StructureSection> |
| - | ==Reference==
| + | |
| - | <ref group="xtra">PMID:011779505</ref><references group="xtra"/><references/>
| + | |
| | [[Category: Homo sapiens]] | | [[Category: Homo sapiens]] |
| | [[Category: Lin, K.]] | | [[Category: Lin, K.]] |
| Structural highlights
1khu is a 4 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
| | Resources: | FirstGlance, OCA, RCSB, PDBsum |
Disease
[SMAD1_HUMAN] Defects in SMAD1 may be a cause of primary pulmonary hypertension (PPH1) [MIM:178600]. A rare disorder characterized by plexiform lesions of proliferating endothelial cells in pulmonary arterioles. The lesions lead to elevated pulmonary arterial pression, right ventricular failure, and death. The disease can occur from infancy throughout life and it has a mean age at onset of 36 years. Penetrance is reduced. Although familial PPH1 is rare, cases secondary to known etiologies are more common and include those associated with the appetite-suppressant drugs.[1]
Function
[SMAD1_HUMAN] Transcriptional modulator activated by BMP (bone morphogenetic proteins) type 1 receptor kinase. SMAD1 is a receptor-regulated SMAD (R-SMAD). SMAD1/OAZ1/PSMB4 complex mediates the degradation of the CREBBP/EP300 repressor SNIP1.[2]
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
Phosphorylation of Smad1 at the conserved carboxyl terminal SVS sequence activates BMP signaling. Here we report the crystal structure of the Smad1 MH2 domain in a conformation that reveals the structural effects of phosphorylation and a molecular mechanism for activation. Within a trimeric subunit assembly, the SVS sequence docks near two putative phosphoserine binding pockets of the neighboring molecule, in a position ready to interact upon phosphorylation. The MH2 domain undergoes concerted conformational changes upon activation, which signal Smad1 dissociation from the receptor kinase for subsequent heteromeric assembly with Smad4. Biochemical and modeling studies reveal unique favorable interactions within the Smad1/Smad4 heteromeric interface, providing a structural basis for their association in signaling.
Structural basis of Smad1 activation by receptor kinase phosphorylation.,Qin BY, Chacko BM, Lam SS, de Caestecker MP, Correia JJ, Lin K Mol Cell. 2001 Dec;8(6):1303-12. PMID:11779505[3]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Nasim MT, Ogo T, Ahmed M, Randall R, Chowdhury HM, Snape KM, Bradshaw TY, Southgate L, Lee GJ, Jackson I, Lord GM, Gibbs JS, Wilkins MR, Ohta-Ogo K, Nakamura K, Girerd B, Coulet F, Soubrier F, Humbert M, Morrell NW, Trembath RC, Machado RD. Molecular genetic characterization of SMAD signaling molecules in pulmonary arterial hypertension. Hum Mutat. 2011 Dec;32(12):1385-9. doi: 10.1002/humu.21605. Epub 2011 Oct 11. PMID:21898662 doi:10.1002/humu.21605
- ↑ Lin Y, Martin J, Gruendler C, Farley J, Meng X, Li BY, Lechleider R, Huff C, Kim RH, Grasser WA, Paralkar V, Wang T. A novel link between the proteasome pathway and the signal transduction pathway of the bone morphogenetic proteins (BMPs). BMC Cell Biol. 2002 Jun 21;3:15. PMID:12097147
- ↑ Qin BY, Chacko BM, Lam SS, de Caestecker MP, Correia JJ, Lin K. Structural basis of Smad1 activation by receptor kinase phosphorylation. Mol Cell. 2001 Dec;8(6):1303-12. PMID:11779505
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