6xrn

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(New page: '''Unreleased structure''' The entry 6xrn is ON HOLD Authors: Description: Category: Unreleased Structures)
Current revision (10:20, 22 May 2024) (edit) (undo)
 
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'''Unreleased structure'''
 
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The entry 6xrn is ON HOLD
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==Crystal structure of human PI3K-gamma in complex with Compound 17==
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<StructureSection load='6xrn' size='340' side='right'caption='[[6xrn]], [[Resolution|resolution]] 2.96&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[6xrn]] 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=6XRN OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6XRN FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.96&#8491;</td></tr>
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<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=V84:2-amino-5-{2-[(1S)-1-cyclopropylethyl]-7-methyl-1-oxo-2,3-dihydro-1H-isoindol-5-yl}-N-(trans-3-hydroxycyclobutyl)pyrazolo[1,5-a]pyrimidine-3-carboxamide'>V84</scene></td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=6xrn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6xrn OCA], [https://pdbe.org/6xrn PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6xrn RCSB], [https://www.ebi.ac.uk/pdbsum/6xrn PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6xrn ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/PK3CG_HUMAN PK3CG_HUMAN] Phosphoinositide-3-kinase (PI3K) that phosphorylates PtdIns(4,5)P2 (Phosphatidylinositol 4,5-bisphosphate) to generate phosphatidylinositol 3,4,5-trisphosphate (PIP3). PIP3 plays a key role by recruiting PH domain-containing proteins to the membrane, including AKT1 and PDPK1, activating signaling cascades involved in cell growth, survival, proliferation, motility and morphology. Links G-protein coupled receptor activation to PIP3 production. Involved in immune, inflammatory and allergic responses. Modulates leukocyte chemotaxis to inflammatory sites and in response to chemoattractant agents. May control leukocyte polarization and migration by regulating the spatial accumulation of PIP3 and by regulating the organization of F-actin formation and integrin-based adhesion at the leading edge. Controls motility of dendritic cells. Together with PIK3CD is involved in natural killer (NK) cell development and migration towards the sites of inflammation. Participates in T-lymphocyte migration. Regulates T-lymphocyte proliferation and cytokine production. Together with PIK3CD participates in T-lymphocyte development. Required for B-lymphocyte development and signaling. Together with PIK3CD participates in neutrophil respiratory burst. Together with PIK3CD is involved in neutrophil chemotaxis and extravasation. Together with PIK3CB promotes platelet aggregation and thrombosis. Regulates alpha-IIb/beta-3 integrins (ITGA2B/ ITGB3) adhesive function in platelets downstream of P2Y12 through a lipid kinase activity-independent mechanism. May have also a lipid kinase activity-dependent function in platelet aggregation. Involved in endothelial progenitor cell migration. Negative regulator of cardiac contractility. Modulates cardiac contractility by anchoring protein kinase A (PKA) and PDE3B activation, reducing cAMP levels. Regulates cardiac contractility also by promoting beta-adrenergic receptor internalization by binding to ADRBK1 and by non-muscle tropomyosin phosphorylation. Also has serine/threonine protein kinase activity: both lipid and protein kinase activities are required for beta-adrenergic receptor endocytosis. May also have a scaffolding role in modulating cardiac contractility. Contributes to cardiac hypertrophy under pathological stress. Through simultaneous binding of PDE3B to RAPGEF3 and PIK3R6 is assembled in a signaling complex in which the PI3K gamma complex is activated by RAPGEF3 and which is involved in angiogenesis.<ref>PMID:7624799</ref> <ref>PMID:12163475</ref> <ref>PMID:15294162</ref> <ref>PMID:16094730</ref> <ref>PMID:21393242</ref>
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<div style="background-color:#fffaf0;">
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== Publication Abstract from PubMed ==
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Phosphoinositide-3-kinase gamma (PI3Kgamma) is highly expressed in immune cells and promotes the production and migration of inflammatory mediators. The inhibition of PI3Kgamma has been shown to repolarize the tumor immune microenvironment to a more inflammatory phenotype, thereby controlling immune suppression in cancer. Herein, we report the structure-based optimization of an early lead series of pyrazolopyrimidine isoindolinones, which culminated in the discovery of highly potent and isoform-selective PI3Kgamma inhibitors with favorable drug-like properties. X-ray cocrystal structure analysis, molecular docking studies, and detailed structure-activity relationship investigations resulted in the identification of the optimal amide and isoindolinone substituents to achieve a desirable combination of potency, selectivity, and metabolic stability. Preliminary in vitro studies indicate that inhibition of PI3Kgamma with compound 56 results in a significant immune response by increasing pro-inflammatory cytokine gene expression in M1 macrophages.
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Authors:
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Design, Synthesis, and Structure-Activity Relationship Optimization of Pyrazolopyrimidine Amide Inhibitors of Phosphoinositide 3-Kinase gamma (PI3Kgamma).,Mata G, Miles DH, Drew SL, Fournier J, Lawson KV, Mailyan AK, Sharif EU, Yan X, Beatty JW, Banuelos J, Chen J, Ginn E, Chen A, Gerrick KY, Pham AT, Wong K, Soni D, Dhanota P, Shaqfeh SG, Meleza C, Narasappa N, Singh H, Zhao X, Jin L, Schindler U, Walters MJ, Young SW, Walker NP, Leleti MR, Powers JP, Jeffrey JL J Med Chem. 2021 Oct 21. doi: 10.1021/acs.jmedchem.1c01153. PMID:34672584<ref>PMID:34672584</ref>
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Description:
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From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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[[Category: Unreleased Structures]]
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</div>
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<div class="pdbe-citations 6xrn" style="background-color:#fffaf0;"></div>
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==See Also==
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*[[Phosphoinositide 3-kinase 3D structures|Phosphoinositide 3-kinase 3D structures]]
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== References ==
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<references/>
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__TOC__
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</StructureSection>
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[[Category: Homo sapiens]]
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[[Category: Large Structures]]
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[[Category: Jeffrey JL]]
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[[Category: Walker NP]]

Current revision

Crystal structure of human PI3K-gamma in complex with Compound 17

PDB ID 6xrn

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