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==Crystal structure of human VEGFR2 kinase domain with a novel pyrrolopyrimidine inhibitor.==
==Crystal structure of human VEGFR2 kinase domain with a novel pyrrolopyrimidine inhibitor.==
<StructureSection load='3vhe' size='340' side='right' caption='[[3vhe]], [[Resolution|resolution]] 1.55&Aring;' scene=''>
<StructureSection load='3vhe' size='340' side='right'caption='[[3vhe]], [[Resolution|resolution]] 1.55&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[3vhe]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Human Human]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3VHE OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3VHE FirstGlance]. <br>
<table><tr><td colspan='2'>[[3vhe]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3VHE OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3VHE FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=42Q:1-{2-FLUORO-4-[(5-METHYL-5H-PYRROLO[3,2-D]PYRIMIDIN-4-YL)OXY]PHENYL}-3-[3-(TRIFLUOROMETHYL)PHENYL]UREA'>42Q</scene></td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.55&#8491;</td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">FLK1, KDR ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 HUMAN])</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=42Q:1-{2-FLUORO-4-[(5-METHYL-5H-PYRROLO[3,2-D]PYRIMIDIN-4-YL)OXY]PHENYL}-3-[3-(TRIFLUOROMETHYL)PHENYL]UREA'>42Q</scene></td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Receptor_protein-tyrosine_kinase Receptor protein-tyrosine kinase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.10.1 2.7.10.1] </span></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=3vhe FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3vhe OCA], [https://pdbe.org/3vhe PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3vhe RCSB], [https://www.ebi.ac.uk/pdbsum/3vhe PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3vhe 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=3vhe FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3vhe OCA], [http://pdbe.org/3vhe PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3vhe RCSB], [http://www.ebi.ac.uk/pdbsum/3vhe PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3vhe ProSAT]</span></td></tr>
</table>
</table>
== Disease ==
== Disease ==
[[http://www.uniprot.org/uniprot/VGFR2_HUMAN VGFR2_HUMAN]] Defects in KDR are associated with susceptibility to hemangioma capillary infantile (HCI) [MIM:[http://omim.org/entry/602089 602089]]. HCI are benign, highly proliferative lesions involving aberrant localized growth of capillary endothelium. They are the most common tumor of infancy, occurring in up to 10% of all births. Hemangiomas tend to appear shortly after birth and show rapid neonatal growth for up to 12 months characterized by endothelial hypercellularity and increased numbers of mast cells. This phase is followed by slow involution at a rate of about 10% per year and replacement by fibrofatty stroma.<ref>PMID:11807987</ref> <ref>PMID:18931684</ref>  Note=Plays a major role in tumor angiogenesis. In case of HIV-1 infection, the interaction with extracellular viral Tat protein seems to enhance angiogenesis in Kaposi's sarcoma lesions.  
[https://www.uniprot.org/uniprot/VGFR2_HUMAN VGFR2_HUMAN] Defects in KDR are associated with susceptibility to hemangioma capillary infantile (HCI) [MIM:[https://omim.org/entry/602089 602089]. HCI are benign, highly proliferative lesions involving aberrant localized growth of capillary endothelium. They are the most common tumor of infancy, occurring in up to 10% of all births. Hemangiomas tend to appear shortly after birth and show rapid neonatal growth for up to 12 months characterized by endothelial hypercellularity and increased numbers of mast cells. This phase is followed by slow involution at a rate of about 10% per year and replacement by fibrofatty stroma.<ref>PMID:11807987</ref> <ref>PMID:18931684</ref>  Note=Plays a major role in tumor angiogenesis. In case of HIV-1 infection, the interaction with extracellular viral Tat protein seems to enhance angiogenesis in Kaposi's sarcoma lesions.
== Function ==
== Function ==
[[http://www.uniprot.org/uniprot/VGFR2_HUMAN VGFR2_HUMAN]] Tyrosine-protein kinase that acts as a cell-surface receptor for VEGFA, VEGFC and VEGFD. Plays an essential role in the regulation of angiogenesis, vascular development, vascular permeability, and embryonic hematopoiesis. Promotes proliferation, survival, migration and differentiation of endothelial cells. Promotes reorganization of the actin cytoskeleton. Isoforms lacking a transmembrane domain, such as isoform 2 and isoform 3, may function as decoy receptors for VEGFA, VEGFC and/or VEGFD. Isoform 2 plays an important role as negative regulator of VEGFA- and VEGFC-mediated lymphangiogenesis by limiting the amount of free VEGFA and/or VEGFC and preventing their binding to FLT4. Modulates FLT1 and FLT4 signaling by forming heterodimers. Binding of vascular growth factors to isoform 1 leads to the activation of several signaling cascades. Activation of PLCG1 leads to the production of the cellular signaling molecules diacylglycerol and inositol 1,4,5-trisphosphate and the activation of protein kinase C. Mediates activation of MAPK1/ERK2, MAPK3/ERK1 and the MAP kinase signaling pathway, as well as of the AKT1 signaling pathway. Mediates phosphorylation of PIK3R1, the regulatory subunit of phosphatidylinositol 3-kinase, reorganization of the actin cytoskeleton and activation of PTK2/FAK1. Required for VEGFA-mediated induction of NOS2 and NOS3, leading to the production of the signaling molecule nitric oxide (NO) by endothelial cells. Phosphorylates PLCG1. Promotes phosphorylation of FYN, NCK1, NOS3, PIK3R1, PTK2/FAK1 and SRC.<ref>PMID:19668192</ref> <ref>PMID:1417831</ref> <ref>PMID:7929439</ref> <ref>PMID:9160888</ref> <ref>PMID:9837777</ref> <ref>PMID:9804796</ref> <ref>PMID:10600473</ref> <ref>PMID:10102632</ref> <ref>PMID:11387210</ref> <ref>PMID:12649282</ref> <ref>PMID:15026417</ref> <ref>PMID:15215251</ref> <ref>PMID:15962004</ref> <ref>PMID:16966330</ref> <ref>PMID:17303569</ref> <ref>PMID:19834490</ref> <ref>PMID:20179233</ref> <ref>PMID:20224550</ref> <ref>PMID:20705758</ref> <ref>PMID:10368301</ref> <ref>PMID:18529047</ref> <ref>PMID:20080685</ref
[https://www.uniprot.org/uniprot/VGFR2_HUMAN VGFR2_HUMAN] Tyrosine-protein kinase that acts as a cell-surface receptor for VEGFA, VEGFC and VEGFD. Plays an essential role in the regulation of angiogenesis, vascular development, vascular permeability, and embryonic hematopoiesis. Promotes proliferation, survival, migration and differentiation of endothelial cells. Promotes reorganization of the actin cytoskeleton. Isoforms lacking a transmembrane domain, such as isoform 2 and isoform 3, may function as decoy receptors for VEGFA, VEGFC and/or VEGFD. Isoform 2 plays an important role as negative regulator of VEGFA- and VEGFC-mediated lymphangiogenesis by limiting the amount of free VEGFA and/or VEGFC and preventing their binding to FLT4. Modulates FLT1 and FLT4 signaling by forming heterodimers. Binding of vascular growth factors to isoform 1 leads to the activation of several signaling cascades. Activation of PLCG1 leads to the production of the cellular signaling molecules diacylglycerol and inositol 1,4,5-trisphosphate and the activation of protein kinase C. Mediates activation of MAPK1/ERK2, MAPK3/ERK1 and the MAP kinase signaling pathway, as well as of the AKT1 signaling pathway. Mediates phosphorylation of PIK3R1, the regulatory subunit of phosphatidylinositol 3-kinase, reorganization of the actin cytoskeleton and activation of PTK2/FAK1. Required for VEGFA-mediated induction of NOS2 and NOS3, leading to the production of the signaling molecule nitric oxide (NO) by endothelial cells. Phosphorylates PLCG1. Promotes phosphorylation of FYN, NCK1, NOS3, PIK3R1, PTK2/FAK1 and SRC.<ref>PMID:19668192</ref> <ref>PMID:1417831</ref> <ref>PMID:7929439</ref> <ref>PMID:9160888</ref> <ref>PMID:9837777</ref> <ref>PMID:9804796</ref> <ref>PMID:10600473</ref> <ref>PMID:10102632</ref> <ref>PMID:11387210</ref> <ref>PMID:12649282</ref> <ref>PMID:15026417</ref> <ref>PMID:15215251</ref> <ref>PMID:15962004</ref> <ref>PMID:16966330</ref> <ref>PMID:17303569</ref> <ref>PMID:19834490</ref> <ref>PMID:20179233</ref> <ref>PMID:20224550</ref> <ref>PMID:20705758</ref> <ref>PMID:10368301</ref> <ref>PMID:18529047</ref> <ref>PMID:20080685</ref>  
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
We synthesized a series of pyrrolo[3,2-d]pyrimidine derivatives and evaluated their application as type-II inhibitors of vascular endothelial growth factor receptor 2 (VEGFR2) kinase. Incorporation of a diphenylurea moiety at the C4-position of the pyrrolo[3,2-d]pyrimidine core via an oxygen linker resulted in compounds that were potent inhibitors of VEGFR2 kinase. Of these derivatives, compound 20d showed the strongest inhibition of VEGF-stimulated proliferation of human umbilical vein endothelial cells (HUVEC). The co-crystal structure of 20d and VEGFR2 revealed that 20d binds to the inactive form of VEGFR2. Further studies indicated that 20d inhibited VEGFR2 kinase with slow dissociation kinetics and also inhibited PDGFR and Tie-2 kinases. Oral administration of the hydrochloride salt of 20d at 3mg/kg/day showed potent inhibition of tumor growth in a DU145 human prostate cancer cell xenograft nude mouse model.
 
Design, synthesis, and evaluation of 5-methyl-4-phenoxy-5H-pyrrolo[3,2-d]pyrimidine derivatives: novel VEGFR2 kinase inhibitors binding to inactive kinase conformation.,Oguro Y, Miyamoto N, Okada K, Takagi T, Iwata H, Awazu Y, Miki H, Hori A, Kamiyama K, Imamura S Bioorg Med Chem. 2010 Oct 15;18(20):7260-73. Epub 2010 Aug 13. PMID:20833055<ref>PMID:20833055</ref>
 
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 3vhe" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
*[[Vascular Endothelial Growth Factor Receptor|Vascular Endothelial Growth Factor Receptor]]
*[[3D structures of vascular endothelial growth factor receptor|3D structures of vascular endothelial growth factor receptor]]
== References ==
== References ==
<references/>
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Human]]
[[Category: Homo sapiens]]
[[Category: Receptor protein-tyrosine kinase]]
[[Category: Large Structures]]
[[Category: Awazu, Y]]
[[Category: Awazu Y]]
[[Category: Hori, A]]
[[Category: Hori A]]
[[Category: Imanura, S]]
[[Category: Imanura S]]
[[Category: Iwata, H]]
[[Category: Iwata H]]
[[Category: Kamiyama, K]]
[[Category: Kamiyama K]]
[[Category: Miki, H]]
[[Category: Miki H]]
[[Category: Miyamoto, N]]
[[Category: Miyamoto N]]
[[Category: Oguro, Y]]
[[Category: Oguro Y]]
[[Category: Okada, K]]
[[Category: Okada K]]
[[Category: Takagi, T]]
[[Category: Takagi T]]
[[Category: Kinase]]
[[Category: Kinase domain]]
[[Category: Transferase-transferase inhibitor complex]]

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