1
|
Kariyawasam K, Di Meo T, Hammerer F, Valerio-Lepiniec M, Sciortino G, Maréchal JD, Minard P, Mahy JP, Urvoas A, Ricoux R. An Artificial Hemoprotein with Inducible Peroxidase- and Monooxygenase-Like Activities. Chemistry 2020; 26:14929-14937. [PMID: 32588931 DOI: 10.1002/chem.202002434] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 06/25/2020] [Indexed: 12/24/2022]
Abstract
A novel inducible artificial metalloenzyme obtained by covalent attachment of a manganese(III)-tetraphenylporphyrin (MnTPP) to the artificial bidomain repeat protein, (A3A3')Y26C, is reported. The protein is part of the αRep family. The biohybrid was fully characterized by MALDI-ToF mass spectrometry, circular dichroism and UV/Vis spectroscopies. The peroxidase and monooxygenase activities were evaluated on the original and modified scaffolds including those that have a) an additional imidazole, b) a specific αRep bA3-2 that is known to induce the opening of the (A3A3') interdomain region and c) a derivative of the αRep bA3-2 inducer extended with a His6 -Tag (His6 -bA3-2). Catalytic profiles are highly dependent on the presence of co-catalysts with the best activity obtained with His6 -bA3-2. The entire mechanism was rationalized by an integrative molecular modeling study that includes protein-ligand docking and large-scale molecular dynamics. This constitutes the first example of an entirely artificial metalloenzyme with inducible peroxidase and monooxygenase activities, reminiscent of allosteric regulation of natural enzymatic pathways.
Collapse
Affiliation(s)
- Kalani Kariyawasam
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), UMR 8182 CNRS, Laboratoire de Chimie Bioorganique et Bioinorganique, Bât. 420, Université Paris-sud, Université Paris-Saclay, 91405, Orsay cedex, France
| | - Thibault Di Meo
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), UMR 8182 CNRS, Laboratoire de Chimie Bioorganique et Bioinorganique, Bât. 420, Université Paris-sud, Université Paris-Saclay, 91405, Orsay cedex, France.,Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), 91198, Gif-sur-Yvette cedex, France
| | - Fabien Hammerer
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), UMR 8182 CNRS, Laboratoire de Chimie Bioorganique et Bioinorganique, Bât. 420, Université Paris-sud, Université Paris-Saclay, 91405, Orsay cedex, France
| | - Marie Valerio-Lepiniec
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), 91198, Gif-sur-Yvette cedex, France
| | - Giuseppe Sciortino
- Departament de Química, Universitat Autònoma de Barcelona, Edifici C.n., 08193, Cerdanyola del Vallés, Barcelona, Spain
| | - Jean-Didier Maréchal
- Departament de Química, Universitat Autònoma de Barcelona, Edifici C.n., 08193, Cerdanyola del Vallés, Barcelona, Spain
| | - Philippe Minard
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), 91198, Gif-sur-Yvette cedex, France
| | - Jean-Pierre Mahy
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), UMR 8182 CNRS, Laboratoire de Chimie Bioorganique et Bioinorganique, Bât. 420, Université Paris-sud, Université Paris-Saclay, 91405, Orsay cedex, France
| | - Agathe Urvoas
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), 91198, Gif-sur-Yvette cedex, France
| | - Rémy Ricoux
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), UMR 8182 CNRS, Laboratoire de Chimie Bioorganique et Bioinorganique, Bât. 420, Université Paris-sud, Université Paris-Saclay, 91405, Orsay cedex, France
| |
Collapse
|