immobilized on silica as catalysts, at 60 °C, being the α-terpinyl methyl ether the main product. Tungstophosphoric acid (PW), molybdophosphoric acid (PMo), tungstosilicic acid (SiW) and molybdosilicic acid (SiMo) were immobilized on silica by sol–gel method. It was observed that the catalytic activity of the silica-supported heteropolyacids decreases in the series: PW2_S > SiW_S > PMo_S > SiMo_S. A
P450 Fingerprinting Method for Rapid Discovery of Terpene Hydroxylating P450 Catalysts with Diversified Regioselectivity
作者:Kaidong Zhang、Shady El Damaty、Rudi Fasan
DOI:10.1021/ja109590h
日期:2011.3.16
Engineered P450 enzymes constitute attractive catalysts for the selective oxidation of unactivated C-H bonds in complex molecules. A current bottleneck in the use of P450 catalysis for chemical synthesis is the time and effort required to identify the P450 variant(s) with the desired level of activity and selectivity. In this report, we describe a method to map the active site configuration of engineered P450 variants in high throughput using a set of semisynthetic chromogenic probes. Through analysis of the resulting 'fingerprints', reliable predictions can be made regarding the reactivity of these enzymes toward complex substrates structurally related to the fingerprint probes. In addition, fingerprint analysis offers a convenient and time-effective means to assess the regioselectivity properties of the fingerprinted P450s. The described approach can represent a valuable tool to expedite the discovery of P450 oxidation catalysts for the functionalization of relevant natural products such as members of the terpene family.
Hueckel, Justus Liebigs Annalen der Chemie, 1941, vol. 549, p. 186,206
作者:Hueckel
DOI:——
日期:——
Gream,G.E.; Pincombe,C.F., Australian Journal of Chemistry, 1974, vol. 27, p. 589 - 602
作者:Gream,G.E.、Pincombe,C.F.
DOI:——
日期:——
Methods and systems for evaluating and predicting the reactivity of monooxygenase enzymes
申请人:Fasan Rudi
公开号:US09273342B2
公开(公告)日:2016-03-01
Methods and systems for evaluating and predicting the reactivity of natural and engineered monooxygenase enzymes are provided. Methods are provided for acquiring a functional profile (fingerprint) of monooxygenases that encode information regarding the active site configuration of such monooxygenases. Methods are also provided for carrying out analysis of a monooxygenase fingerprint, to formulate predictions regarding the reactivity properties (e.g., substrate reactivity, chemo-, regio, and stereoselectivity properties) of the fingerprinted monooxygenases.