5 publications
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Artificial Metalloenzymes in Asymmetric Catalysis: Key Developments and Future Directions
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Adv. Synth. Catal. 2015, 357, 1567-1586, 10.1002/adsc.201500290
Artificial metalloenzymes combine the excellent selective recognition/binding properties of enzymes with transition metal catalysts, and therefore many asymmetric transformations can benefit from these entities. The search for new successful strategies in the construction of metal‐enzyme hybrid catalysts has therefore become a very active area of research. This review discusses all the developed strategies and the latest advances in the synthesis and application in asymmetric catalysis of artificial metalloenzymes with future directions for their design, synthesis and application (Sections 2–4). Finally, advice is presented (to the non‐specialist) on how to prepare and use artificial metalloenzymes (Section 5).
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Autoxidation of Ascorbic Acid Catalyzed by a Semisynthetic Enzyme
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Biopolymers 1990, 29, 39-43, 10.1002/bip.360290107
The semisyntehtic enzyme 6 was prepared by alkylation of the cysteine‐25 sulfhydryl group of papain with the bipyridine 5 and was shown to stoichiometrically bind copper ion; 7 catalyzed the autoxidation of ascorbic acid derivatives with saturation kinetics approximately 20‐fold faster than a model system using 3‐Cu(II).
Metal: CuLigand type: BipyridineHost protein: Papain (PAP)Anchoring strategy: CovalentOptimization: ---Notes: ---
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Flavohemoglobin: A Semisynthetic Hydroxylase Acting in the Absence of Reductase
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J. Am. Chem. Soc. 1987, 109, 606-607, 10.1021/ja00236a062
n/a
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Helichrome: Synthesis and Enzymatic Activity of a Designed Hemeprotein
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J. Am. Chem. Soc. 1989, 111, 380-381, 10.1021/ja00183a065
n/a
Metal: FeLigand type: PorphyrinHost protein: Artificial constructAnchoring strategy: CovalentOptimization: ---Notes: Only 60 amino acids
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Studies on the Oxidase Activity of Copper (II) Carboxypeptidase A
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J. Chem. Soc., Chem. Commun. 1976, 830, 10.1039/C39760000830
Copper(II) carboxypeptidase A catalyses the oxidation of ascorbic acid and this reaction is inhibited by α-benzylsuccinate, a known inhibitor of the thiolesterase action of the copper enzyme; the pH dependencies of kcat and kcat/Km are similar near pH 7 to those seen for the peptidase and esterase activities of native carboxypeptidase A.
Metal: CuLigand type: Amino acidHost protein: Carboxypeptidase AAnchoring strategy: Metal substitutionOptimization: ---Notes: Oxidation of vitamin C