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Cesa LC, Patury S, Komiyama T, Ahmad A, Zuiderweg ERP, Gestwicki JE. Inhibitors of difficult protein-protein interactions identified by high-throughput screening of multiprotein complexes. ACS Chem Biol 2013; 8:1988-1997. [PMID: 23819499 DOI: 10.1021/cb400356m] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Protein-protein interactions (PPIs) are important in all aspects of cellular function, and there is interest in finding inhibitors of these contacts. However, PPIs with weak affinities and/or large interfaces have traditionally been more resistant to the discovery of inhibitors, partly because it is more challenging to develop high-throughput screening (HTS) methods that permit direct measurements of these physical interactions. Here, we explored whether the functional consequences of a weak PPI might be used as a surrogate for binding. As a model, we used the bacterial ATPase DnaK and its partners DnaJ and GrpE. Both DnaJ and GrpE bind DnaK and catalytically accelerate its ATP cycling, so we used stimulated nucleotide turnover to indirectly report on these PPIs. In pilot screens, we identified compounds that block activation of DnaK by either DnaJ or GrpE. Interestingly, at least one of these molecules blocked binding of DnaK to DnaJ, while another compound disrupted allostery between DnaK and GrpE without altering the physical interaction. These findings suggest that the activity of a reconstituted multiprotein complex might be used in some cases to identify allosteric inhibitors of challenging PPIs.
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Affiliation(s)
- Laura C. Cesa
- Departments of Pathology
and Biological Chemistry and
the Life Sciences Institute, University of Michigan, Ann Arbor, Michigan
48109-2216, United States
| | - Srikanth Patury
- Departments of Pathology
and Biological Chemistry and
the Life Sciences Institute, University of Michigan, Ann Arbor, Michigan
48109-2216, United States
| | - Tomoko Komiyama
- Departments of Pathology
and Biological Chemistry and
the Life Sciences Institute, University of Michigan, Ann Arbor, Michigan
48109-2216, United States
| | - Atta Ahmad
- Departments of Pathology
and Biological Chemistry and
the Life Sciences Institute, University of Michigan, Ann Arbor, Michigan
48109-2216, United States
| | - Erik R. P. Zuiderweg
- Departments of Pathology
and Biological Chemistry and
the Life Sciences Institute, University of Michigan, Ann Arbor, Michigan
48109-2216, United States
| | - Jason E. Gestwicki
- Departments of Pathology
and Biological Chemistry and
the Life Sciences Institute, University of Michigan, Ann Arbor, Michigan
48109-2216, United States
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Szymański W, Beierle JM, Kistemaker HAV, Velema WA, Feringa BL. Reversible Photocontrol of Biological Systems by the Incorporation of Molecular Photoswitches. Chem Rev 2013; 113:6114-78. [DOI: 10.1021/cr300179f] [Citation(s) in RCA: 847] [Impact Index Per Article: 77.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Wiktor Szymański
- Stratingh Institute
for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The
Netherlands
| | - John M. Beierle
- Stratingh Institute
for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The
Netherlands
| | - Hans A. V. Kistemaker
- Stratingh Institute
for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The
Netherlands
| | - Willem A. Velema
- Stratingh Institute
for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The
Netherlands
| | - Ben L. Feringa
- Stratingh Institute
for Chemistry, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The
Netherlands
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Majmudar CY, Højfeldt JW, Arevang CJ, Pomerantz WC, Gagnon JK, Schultz PJ, Cesa LC, Doss CH, Rowe SP, Vásquez V, Tamayo-Castillo G, Cierpicki T, Brooks CL, Sherman DH, Mapp AK. Sekikaic Acid and Lobaric Acid Target a Dynamic Interface of the Coactivator CBP/p300. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201206815] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Majmudar CY, Højfeldt JW, Arevang CJ, Pomerantz WC, Gagnon JK, Schultz PJ, Cesa LC, Doss CH, Rowe SP, Vásquez V, Tamayo-Castillo G, Cierpicki T, Brooks CL, Sherman DH, Mapp AK. Sekikaic acid and lobaric acid target a dynamic interface of the coactivator CBP/p300. Angew Chem Int Ed Engl 2012; 51:11258-62. [PMID: 23042634 DOI: 10.1002/anie.201206815] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2012] [Indexed: 12/25/2022]
Abstract
Capturing a coactivator, naturally: the natural products sekikaic acid and lobaric acid, isolated after a high-throughput screen of a structurally diverse extract collection, effectively target the dynamic binding interfaces of the GACKIX domain of the coactivator CBP/p300. These molecules are the most effective inhibitors of the GACKIX domain yet described and are uniquely selective for this domain.
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Broman SL, Petersen AU, Tortzen CG, Vibenholt J, Bond AD, Nielsen MB. A Bis(heptafulvenyl)-dicyanoethylene Thermoswitch with Two Sites for Ring Closure. Org Lett 2011; 14:318-21. [DOI: 10.1021/ol2030586] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Søren Lindbæk Broman
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark, and Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
| | - Anne Ugleholdt Petersen
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark, and Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
| | - Christian Gregers Tortzen
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark, and Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
| | - Johan Vibenholt
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark, and Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
| | - Andrew D. Bond
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark, and Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
| | - Mogens Brøndsted Nielsen
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark, and Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
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Golynskiy MV, Koay MS, Vinkenborg JL, Merkx M. Engineering Protein Switches: Sensors, Regulators, and Spare Parts for Biology and Biotechnology. Chembiochem 2011; 12:353-61. [DOI: 10.1002/cbic.201000642] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2010] [Indexed: 12/31/2022]
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Broman SL, Petersen MA, Tortzen CG, Kadziola A, Kilså K, Nielsen MB. Arylethynyl derivatives of the dihydroazulene/vinylheptafulvene photo/thermoswitch: tuning the switching event. J Am Chem Soc 2010; 132:9165-74. [PMID: 20552980 DOI: 10.1021/ja103235g] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A selection of dihydroazulene (DHA) photoswitches incorporating an arylethynyl-substituent in the seven-membered ring was prepared by palladium-catalyzed Sonogashira cross-coupling reactions employing a suitable bromo-functionalized DHA. Shielding of the alkyne bridge and separating the aryl and DHA units, by sterically demanding groups, was required to obtain stable compounds. The DHAs underwent a light-induced ring-opening to vinylheptafulvenes (VHFs) which were thermally converted to a mixture of two DHA regioisomers, one of which was the original one. The influence of the aryl groups on the DHA and VHF absorptions and on their interconversion was investigated in detail. The rates of the switching events were finely tuned by the donor or acceptor strength of the aryl group. The thermal ring closure was found to proceed most readily in the presence of an electron-donating group on the seven-membered ring. The rate constant was found to follow a Hammett linear free energy correlation, which signals that stabilization of a positive charge in the seven-membered ring plays a crucial role in the ring-closure reaction. In view of these findings, it was possible to control the switching event by protonation/deprotonation of an anilino-substituted DHA. Also, the light-induced ring opening reaction was strongly controlled by acid/base. In addition to the mesomeric effects exerted by an arylethynyl group, the inductive effects exerted by different groups on the thermal ring closure were elucidated. Although the alkyne bridge transmits the electronic character of the aryl group, the ring-closure is retarded for all the ethynylated compounds relative to the parent unsubstituted compound. Along with our synthesis of suitable arylalkynes, we discovered an interesting byproduct in a Sonogashira cross-coupling reaction involving a nitrophenyl group, namely a diaryl azoxy compound. Its structure was confirmed by X-ray crystallographic analysis.
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Affiliation(s)
- Søren Lindbaek Broman
- Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 Copenhagen Ø, Denmark
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