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| | <StructureSection load='2qcw' size='340' side='right' caption='[[2qcw]], [[Resolution|resolution]] 2.49Å' scene=''> | | <StructureSection load='2qcw' size='340' side='right' caption='[[2qcw]], [[Resolution|resolution]] 2.49Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[2qcw]] is a 2 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=2QCW OCA]. <br> | + | <table><tr><td colspan='2'>[[2qcw]] is a 2 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=2QCW OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2QCW FirstGlance]. <br> |
| - | </td></tr><tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">BMP6 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</td></tr> | + | </td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">BMP6 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</td></tr> |
| - | <tr><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Glucokinase Glucokinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.1.2 2.7.1.2] </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=2qcw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2qcw OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2qcw RCSB], [http://www.ebi.ac.uk/pdbsum/2qcw PDBsum]</span></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=2qcw FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2qcw OCA], [http://www.rcsb.org/pdb/explore.do?structureId=2qcw RCSB], [http://www.ebi.ac.uk/pdbsum/2qcw PDBsum]</span></td></tr>
| + | </table> |
| - | <table> | + | |
| | == Evolutionary Conservation == | | == Evolutionary Conservation == |
| | [[Image:Consurf_key_small.gif|200px|right]] | | [[Image:Consurf_key_small.gif|200px|right]] |
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| | BMP-3 and BMP-6 structures illuminate the nature of binding specificity with receptors.,Allendorph GP, Isaacs MJ, Kawakami Y, Belmonte JC, Choe S Biochemistry. 2007 Oct 30;46(43):12238-47. Epub 2007 Oct 9. PMID:17924656<ref>PMID:17924656</ref> | | BMP-3 and BMP-6 structures illuminate the nature of binding specificity with receptors.,Allendorph GP, Isaacs MJ, Kawakami Y, Belmonte JC, Choe S Biochemistry. 2007 Oct 30;46(43):12238-47. Epub 2007 Oct 9. PMID:17924656<ref>PMID:17924656</ref> |
| | | | |
| - | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> |
| | </div> | | </div> |
| | == References == | | == References == |
| Structural highlights
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
Bone morphogenetic proteins (BMPs) are extracellular messenger ligands involved in controlling a wide array of developmental and intercellular signaling processes. To initiate their specific intracellular signaling pathways, the ligands recognize and bind two structurally related serine/threonine kinase receptors, termed type I and type II, on the cell surface. Here, we present the crystal structures of BMP-3 and BMP-6, of which BMP-3 has remained poorly understood with respect to its receptor identity, affinity, and specificity. Using surface plasmon resonance (BIAcore) we show that BMP-3 binds Activin Receptor type II (ActRII) with Kd approximately 1.8 microM but ActRIIb with 30-fold higher affinity at Kd approximately 53 nM. This low affinity for ActRII may involve Ser-28 and Asp-33 of BMP-3, which are found only in BMP-3's type II receptor-binding interfaces. Point mutations of either residue to alanine results in up to 20-fold higher affinity to either receptor. We further demonstrate by Smad-based whole cell luciferase assays that the increased affinity of BMP-3S28A to ActRII enables the ligand's signaling ability to a level comparable to that of BMP-6. Focusing on BMP-3's preference for ActRIIb, we find that Lys-76 of ActRII and the structurally equivalent Glu-76 of ActRIIb are distinct between the two receptors. We demonstrate that ActRIIbE76K and ActRII bind BMP-3 with similar affinity, indicating BMP-3 receptor specificity is controlled by the interaction of Lys-30 of BMP-3 with Glu-76 of ActRIIb. These studies illustrate how a single amino acid can regulate the specificity of ligand-receptor binding and potentially alter biological signaling and function in vivo.
BMP-3 and BMP-6 structures illuminate the nature of binding specificity with receptors.,Allendorph GP, Isaacs MJ, Kawakami Y, Belmonte JC, Choe S Biochemistry. 2007 Oct 30;46(43):12238-47. Epub 2007 Oct 9. PMID:17924656[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Allendorph GP, Isaacs MJ, Kawakami Y, Belmonte JC, Choe S. BMP-3 and BMP-6 structures illuminate the nature of binding specificity with receptors. Biochemistry. 2007 Oct 30;46(43):12238-47. Epub 2007 Oct 9. PMID:17924656 doi:http://dx.doi.org/10.1021/bi700907k
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