1
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Di Y, Zhang E, Yang Z, Shen Q, Fu X, Song G, Zhu C, Bai H, Huang Y, Lv F, Liu L, Wang S. Selective Fluorescence Imaging of Cancer Cells Based on ROS-Triggered Intracellular Cross-Linking of Artificial Enzyme. Angew Chem Int Ed Engl 2022; 61:e202116457. [PMID: 35064623 DOI: 10.1002/anie.202116457] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Indexed: 01/23/2023]
Abstract
Inside living cells, regulation of catalytic activity of artificial enzymes remains challenging due to issues such as biocompatibility, efficiency, and stability of the catalyst, by which the practical applications of artificial enzymes have been severely hindered. Here, an artificial enzyme, PTT-SGH, with responsiveness to reactive oxygen species (ROS), was obtained by introducing a catalytic histidine residue to pentaerythritol tetra(3-mercaptopropionate) (PTT). The artificial enzyme formed large aggregates in cells via the intracellular ROS-mediated oxidation of thiol groups. The process was significantly facilitated in tumor cells because of the higher ROS concentration in the tumor microenvironment. The catalytic activity of this artificial enzyme was intensively enhanced through deprotonation of cross-linked PTT-SGH, which showed typical esterase activities. Selective fluorescence imaging of tumor cells was achieved using the artificial enzyme to trigger the cleavage of the ester bond of the caged fluorophore inside living cells.
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Affiliation(s)
- Yufei Di
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,College of Chemistry, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Endong Zhang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Zhiwen Yang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,College of Chemistry, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Qi Shen
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,College of Chemistry, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Xuancheng Fu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Gang Song
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,College of Chemistry, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Chuanwei Zhu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,College of Chemistry, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Haotian Bai
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Yiming Huang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Fengting Lv
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Libing Liu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,College of Chemistry, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Shu Wang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.,College of Chemistry, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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2
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Di Y, Zhang E, Yang Z, Shen Q, Fu X, Song G, Zhu C, Bai H, Huang Y, Lv F, Liu L, Wang S. Selective Fluorescence Imaging of Cancer Cells Based on ROS‐Triggered Intracellular Cross‐Linking of Artificial Enzyme. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202116457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yufei Di
- Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
- College of Chemistry University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Endong Zhang
- Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Zhiwen Yang
- Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
- College of Chemistry University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Qi Shen
- Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
- College of Chemistry University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Xuancheng Fu
- Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Gang Song
- Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
- College of Chemistry University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Chuanwei Zhu
- Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
- College of Chemistry University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Haotian Bai
- Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Yiming Huang
- Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Fengting Lv
- Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Libing Liu
- Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
- College of Chemistry University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Shu Wang
- Beijing National Laboratory for Molecular Sciences Key Laboratory of Organic Solids Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
- College of Chemistry University of Chinese Academy of Sciences Beijing 100049 P. R. China
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3
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Li K, Wu K, Lu Y, Guo J, Hu P, Su C. Creating Dynamic Nanospaces in Solution by Cationic Cages as Multirole Catalytic Platform for Unconventional C(sp)−H Activation Beyond Enzyme Mimics. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202114070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Kang Li
- School of Chemistry South China Normal University Guangzhou 510006 China
- MOE Laboratory of Bioinorganic and Synthetic Chemistry Lehn Institute of Functional Materials School of Chemistry Sun Yat-Sen University Guangzhou 510275 China
| | - Kai Wu
- MOE Laboratory of Bioinorganic and Synthetic Chemistry Lehn Institute of Functional Materials School of Chemistry Sun Yat-Sen University Guangzhou 510275 China
| | - Yu‐Lin Lu
- MOE Laboratory of Bioinorganic and Synthetic Chemistry Lehn Institute of Functional Materials School of Chemistry Sun Yat-Sen University Guangzhou 510275 China
| | - Jing Guo
- MOE Laboratory of Bioinorganic and Synthetic Chemistry Lehn Institute of Functional Materials School of Chemistry Sun Yat-Sen University Guangzhou 510275 China
| | - Peng Hu
- MOE Laboratory of Bioinorganic and Synthetic Chemistry Lehn Institute of Functional Materials School of Chemistry Sun Yat-Sen University Guangzhou 510275 China
| | - Cheng‐Yong Su
- MOE Laboratory of Bioinorganic and Synthetic Chemistry Lehn Institute of Functional Materials School of Chemistry Sun Yat-Sen University Guangzhou 510275 China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China
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4
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Li K, Wu K, Lu YL, Guo J, Hu P, Su CY. Creating Dynamic Nanospaces in Solution by Cationic Cages as Multirole Catalytic Platform for Unconventional C(sp)-H Activation Beyond Enzyme Mimics. Angew Chem Int Ed Engl 2021; 61:e202114070. [PMID: 34779551 DOI: 10.1002/anie.202114070] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Indexed: 01/10/2023]
Abstract
Herein we demonstrate that, based on the creation of dynamic nanospaces in solution by highly charged positive coordination cage of [Pd6 (RuL3 )8 ]28+ , multirole and multi-way cage-confined catalysis is accomplishable for versatile functions and anomalous reactivities with the aid of the biomimetic cage effect. The high cationic-host charges drive partial deprotonation of 24 imidazole-NHs on cage sphere alike imidazole-residuals in proteins, generating amphoteric heterogeneity in solution to enforce effective cavity-basicity against solution-acidity. Synergistic actions arisen from cage hydrophobicity, host-guest electrostatic interactions and imidazole-N coordination facilitate C(sp)-H activation and carbanionic intermediate stabilization of terminal alkynes to achieve unusual H/D-exchange and Glaser coupling under acidic conditions, and enable phase transfers of water-insoluble substrates/products/co-catalysts to make immiscible-phase and bi-phase catalysis feasible, thus providing a useful catalytic protocol to combine merits from homogeneous, heterogeneous, enzymatic and phase transfer catalysis.
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Affiliation(s)
- Kang Li
- School of Chemistry, South China Normal University, Guangzhou, 510006, China.,MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Kai Wu
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Yu-Lin Lu
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Jing Guo
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Peng Hu
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China
| | - Cheng-Yong Su
- MOE Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-Sen University, Guangzhou, 510275, China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China
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5
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An Individual Amino Acid as a Possible Prebiotic Catalyst. CHEMSYSTEMSCHEM 2021. [DOI: 10.1002/syst.202100005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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6
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van der Helm MP, Wang CL, Fan B, Macchione M, Mendes E, Eelkema R. Organocatalytic Control over a Fuel-Driven Transient-Esterification Network*. Angew Chem Int Ed Engl 2020; 59:20604-20611. [PMID: 32700406 PMCID: PMC7693295 DOI: 10.1002/anie.202008921] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Indexed: 12/20/2022]
Abstract
Signal transduction in living systems is the conversion of information into a chemical change, and is the principal process by which cells communicate. In nature, these functions are encoded in non-equilibrium (bio)chemical reaction networks (CRNs) controlled by enzymes. However, man-made catalytically controlled networks are rare. We incorporated catalysis into an artificial fuel-driven out-of-equilibrium CRN, where the forward (ester formation) and backward (ester hydrolysis) reactions are controlled by varying the ratio of two organocatalysts: pyridine and imidazole. This catalytic regulation enables full control over ester yield and lifetime. This fuel-driven strategy was expanded to a responsive polymer system, where transient polymer conformation and aggregation are controlled through fuel and catalyst levels. Altogether, we show that organocatalysis can be used to control a man-made fuel-driven system and induce a change in a macromolecular superstructure, as in natural non-equilibrium systems.
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Affiliation(s)
- Michelle P van der Helm
- Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629, HZ, Delft, The Netherlands
| | - Chang-Lin Wang
- Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629, HZ, Delft, The Netherlands
| | - Bowen Fan
- Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629, HZ, Delft, The Netherlands
| | - Mariano Macchione
- Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629, HZ, Delft, The Netherlands
| | - Eduardo Mendes
- Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629, HZ, Delft, The Netherlands
| | - Rienk Eelkema
- Department of Chemical Engineering, Delft University of Technology, Van der Maasweg 9, 2629, HZ, Delft, The Netherlands
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7
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Helm MP, Wang C, Fan B, Macchione M, Mendes E, Eelkema R. Organocatalytic Control over a Fuel‐Driven Transient‐Esterification Network**. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202008921] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Michelle P. Helm
- Department of Chemical Engineering Delft University of Technology Van der Maasweg 9 2629 HZ Delft The Netherlands
| | - Chang‐Lin Wang
- Department of Chemical Engineering Delft University of Technology Van der Maasweg 9 2629 HZ Delft The Netherlands
| | - Bowen Fan
- Department of Chemical Engineering Delft University of Technology Van der Maasweg 9 2629 HZ Delft The Netherlands
| | - Mariano Macchione
- Department of Chemical Engineering Delft University of Technology Van der Maasweg 9 2629 HZ Delft The Netherlands
| | - Eduardo Mendes
- Department of Chemical Engineering Delft University of Technology Van der Maasweg 9 2629 HZ Delft The Netherlands
| | - Rienk Eelkema
- Department of Chemical Engineering Delft University of Technology Van der Maasweg 9 2629 HZ Delft The Netherlands
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8
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Mikolajczak DJ, Berger AA, Koksch B. Catalytically Active Peptide-Gold Nanoparticle Conjugates: Prospecting for Artificial Enzymes. Angew Chem Int Ed Engl 2020; 59:8776-8785. [PMID: 31905254 PMCID: PMC7318681 DOI: 10.1002/anie.201908625] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 11/27/2019] [Indexed: 12/12/2022]
Abstract
The self-assembly of peptides onto the surface of gold nanoparticles has emerged as a promising strategy towards the creation of artificial enzymes. The resulting high local peptide density surrounding the nanoparticle leads to cooperative and synergistic effects, which result in rate accelerations and distinct catalytic properties compared to the unconjugated peptide. This Minireview summarizes contributions to and progress made in the field of catalytically active peptide-gold nanoparticle conjugates. The origin of distinct properties, as well as potential applications, are also discussed.
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Affiliation(s)
- Dorian J. Mikolajczak
- Department of Biology, Chemistry and PharmacyFreie Universität BerlinTakustraße 314195BerlinGermany
| | - Allison A. Berger
- Department of Biology, Chemistry and PharmacyFreie Universität BerlinTakustraße 314195BerlinGermany
| | - Beate Koksch
- Department of Biology, Chemistry and PharmacyFreie Universität BerlinTakustraße 314195BerlinGermany
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9
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Mikolajczak DJ, Berger AA, Koksch B. Catalytically Active Peptide–Gold Nanoparticle Conjugates: Prospecting for Artificial Enzymes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201908625] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Dorian J. Mikolajczak
- Department of Biology, Chemistry and Pharmacy Freie Universität Berlin Takustraße 3 14195 Berlin Germany
| | - Allison A. Berger
- Department of Biology, Chemistry and Pharmacy Freie Universität Berlin Takustraße 3 14195 Berlin Germany
| | - Beate Koksch
- Department of Biology, Chemistry and Pharmacy Freie Universität Berlin Takustraße 3 14195 Berlin Germany
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10
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Ogawa R, Sunatsuki Y, Suzuki T. Schiff Base Ligands Derived from l
-Histidine Methyl Ester: Characterization, Racemization, and Dimerization of Their Transition-Metal Complexes. Eur J Inorg Chem 2018. [DOI: 10.1002/ejic.201800137] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Rina Ogawa
- Department of Chemistry; Graduate School of Natural Science and Technology; Okayama University; 700-8530 Okayama Japan
| | - Yukinari Sunatsuki
- Department of Chemistry; Graduate School of Natural Science and Technology; Okayama University; 700-8530 Okayama Japan
| | - Takayoshi Suzuki
- Department of Chemistry; Graduate School of Natural Science and Technology; Okayama University; 700-8530 Okayama Japan
- Research Institute for Interdisciplinary Science; Okayama University; 700-8530 Okayama Japan
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11
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Roy B, De N, Majumdar KC. Advances in Metal-Free Heterocycle-Based Columnar Liquid Crystals. Chemistry 2012; 18:14560-88. [DOI: 10.1002/chem.201200483] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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12
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Breugst M, Corral Bautista F, Mayr H. Nucleophilic Reactivities of the Anions of Nucleobases and Their Subunits. Chemistry 2011; 18:127-37. [DOI: 10.1002/chem.201102411] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2011] [Indexed: 11/10/2022]
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13
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van der Eijk JM, Nolte RJM, Richters VEM, Drenth W. Activity and enantioselectivity in the hydrolysis of substituted phenyl esters catalysed by imidazole-containing poly(iminomethylenes). ACTA ACUST UNITED AC 2010. [DOI: 10.1002/recl.19811000603] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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14
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van der Eijk J, Gusdorf CF, Nolte R, Drenth W. Poly(iminomethylenes). 10. Esterolytic catalysis by poly(carbylhistidine) and poly(carbylhistamine). ACTA ACUST UNITED AC 2010. [DOI: 10.1002/recl.19790980417] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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15
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Hampel D, Mau CJD, Croteau RB. Taxol biosynthesis: Identification and characterization of two acetyl CoA:taxoid-O-acetyl transferases that divert pathway flux away from Taxol production. Arch Biochem Biophys 2009; 487:91-7. [PMID: 19501040 PMCID: PMC2748654 DOI: 10.1016/j.abb.2009.05.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2009] [Revised: 05/25/2009] [Accepted: 05/27/2009] [Indexed: 01/24/2023]
Abstract
Two cDNAs encoding taxoid-O-acetyl transferases (TAX 9 and TAX 14) were obtained from a previously isolated family of Taxus acyl/aroyl transferase cDNA clones. The recombinant enzymes catalyze the acetylation of taxadien-5alpha,13alpha-diacetoxy-9alpha,10beta-diol to generate taxadien-5alpha,10beta,13alpha-tri-acetoxy-9alpha-ol and taxadien-5alpha,9alpha,13alpha-triacetoxy-10beta-ol, respectively, both of which then serve as substrates for a final acetylation step to yield taxusin, a prominent side-route metabolite of Taxus. Neither enzyme acetylate the 5alpha- or the 13alpha-hydroxyls of taxoid polyols, indicating that prior acylations is required for efficient peracetylation to taxusin. Both enzymes were kinetically characterized, and the regioselectivity of acetylation was shown to vary with pH. Sequence comparison with other taxoid acyl transferases confirmed that primary structure of this enzyme type reveals little about function in taxoid metabolism. Unlike previously identified acetyl transferases involved in Taxol production, these two enzymes appear to act exclusively on partially acetylated taxoid polyols to divert the Taxol pathway to side-route metabolites.
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Affiliation(s)
- Daniela Hampel
- Institute of Biological Chemistry, Washington State University, Pullman, WA 99164-6340, USA.
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16
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Yang F, Wei S, Chen CA, Xi P, Yang L, Lan J, Gau HM, You J. A New Strategy for Designing Non-C2-Symmetric Monometallic Bifunctional Catalysts and Their Application in Enantioselective Cyanation of Aldehydes. Chemistry 2008; 14:2223-31. [DOI: 10.1002/chem.200701660] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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17
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Dibbelt L, Kuss E. The sterylsulfatase of human placenta: Kinetic properties of the membrane-bound and the isolated enzyme. Placenta 1992. [DOI: 10.1016/s0143-4004(05)80320-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Belen'Kii L. The Literature of Heterocyclic Chemistry, Part III. ADVANCES IN HETEROCYCLIC CHEMISTRY VOLUME 44 1988. [DOI: 10.1016/s0065-2725(08)60264-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
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19
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Alpert CA, Frank R, Stüber K, Deutscher J, Hengstenberg W. Phosphoenolpyruvate-dependent protein kinase enzyme I of Streptococcus faecalis: purification and properties of the enzyme and characterization of its active center. Biochemistry 1985; 24:959-64. [PMID: 3922407 DOI: 10.1021/bi00325a023] [Citation(s) in RCA: 54] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Enzyme I, the phosphoenolpyruvate:protein phosphotransferase (EC 2.7.3.9), which is part of the bacterial phosphoenolpyruvate- (PEP) dependent phosphotransferase system, has been purified from Streptococcus faecalis by using a large-scale preparation. Size exclusion chromatography revealed a molecular weight of 140 000. On sodium dodecyl sulfate gels, enzyme I gave one band with a molecular weight of 70 000, indicating that enzyme I consists of two identical subunits. The first 59 amino acids of the amino-terminal part of the protein have been sequenced. It showed some similarities with enzyme I of Salmonella typhimurium. The active center of enzyme I has also been determined. After phosphorylation with [32P]PEP, the enzyme was cleaved by using different proteases. Labeled peptides were isolated by high-performance liquid chromatography on a reversed-phase column. The amino acid composition or amino acid sequence of the peptides has been determined. The largest labeled peptide was obtained with Lys-C protease and had the following sequence: -Ala-Phe-Val-Thr-Asp-Ile-Gly- Gly-Arg-Thr-Ser-His*-Ser-Ala-Ile-Met-Ala-Arg-Ser-Leu-Glu-Ile-Pro-Ala- Ile-Val-Gly-Thr-Lys-. It has previously been shown that the phosphoryl group is bound to the N-3 position of a histidyl residue in phosphorylated enzyme I. The single His in position 12 of the above peptide must therefore carry the phosphoryl group.
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20
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Horner L, Flemming HW. Phosphororganische Verbindungen, 110. Gezielte Fluoreszenzmarkierung von Serin-Enzymen. ACTA ACUST UNITED AC 1985. [DOI: 10.1002/jlac.198519850102] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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21
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Mol JA, Docter R, Hennemann G, Visser TJ. Modification of rat liver iodothyronine 5'-deiodinase activity with diethylpyrocarbonate and rose bengal; evidence for an active site histidine residue. Biochem Biophys Res Commun 1984; 120:28-36. [PMID: 6712697 DOI: 10.1016/0006-291x(84)91409-8] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Iodothyronine 5'-deiodinase activity of rat liver microsomes was rapidly and completely lost by treatment with diethylpyrocarbonate (DEP) and by photo-oxidation with Rose Bengal (RB). In both cases inactivation followed pseudo first order reaction kinetics. Inactivation by DEP was diminished in the presence of substrate or competitive inhibitors, and was reversed by hydroxylamine treatment. In addition to photo-oxidation, deiodinase activity was also inhibited by RB in the dark. This inhibition was reversible and competitive with substrate (Ki 60 nM). These results suggest the location of an essential histidine residue at or near the active site of rat liver iodothyronine deiodinase.
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22
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Deutscher J, Beyreuther K, Sobek HM, Stüber K, Hengstenberg W. Phosphoenolpyruvate-dependent phosphotransferase system of Staphylococcus aureus: factor IIIlac, a trimeric phospho-carrier protein that also acts as a phase transfer catalyst. Biochemistry 1982; 21:4867-73. [PMID: 7138836 DOI: 10.1021/bi00263a006] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
Factor IIIlac (FIII) consists of three identical subunits. It could be shown that each of the subunits carries a phosphoryl group upon phosphorylation (P-FIII) with phosphoenolpyruvate (PEP), enzyme I, and histidine-containing phospho-carrier protein (HPr). The phosphoryl group is bound to a histidyl residue in P-FIII. Each subunit of FIII contains four histidyl residues. After tryptic cleavage a peptide was isolated that contained one other histidyl residue besides the active center histidine. By further cleavage of the peptide T-2 with V-8 Staphylococcus aureus protease it could be shown that His-19 in the sequence of the peptide T-2 is the active center histidine. Another peptide (1-38), caused by incomplete tryptic cleavage, could be isolated. It inhibited the phospho-transfer reaction from PEP to the sugar molecule at the step of factor III-enzyme II recognition. It competes with factor III for the binding site of enzyme II, the membrane component. It is a very hydrophobic peptide. This hydrophobic region is buried in factor III. But upon phosphorylation of factor III it is turned out. Thus P-FIII binds to Triton X-100 micelles whereas factor III does not. This conformational change caused by phosphorylation could be shown by proton nuclear magnetic resonance methods [Kalbitzer, H.R., Deutscher, J., Hengstenberg, W., & Rösch, P. (1981) Biochemistry 20, 6178-6185], by circular dichroism spectroscopy, and by the Ouchterlony double-diffusion method. Antibodies against FIII do not precipitate P-FIII.
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