title: Microbial production of ketoreductases: Development of a novel high-throughput screening method.
abstract: An assay method for detection of enantiospecific chiral alcohol was developed based on ketoreductase, enantio-selective alcohol oxidase and 2,4-dinitrophenyl hydrazine (DNPH) reagent. The assay method was developed to check the conversion of 1-Acetonapthone to either (S) or (R) specific 1-(1-napthyl) ethanol or its racemic mixture using ketoreductases. Further, estimation was done with the help of 2,4-DNPH method. The resulting orange coloured chromogen showed a maximum absorbance at 560nm. The assay was performed in 96 well microtiter plates and had a linear detection range from 0.05mM to 4mM. The method is found to be suitable for the detection of large numbers of crude samples and screening of ketoreductase producing strains in high-throughput manner.
authors.affiliation: Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695 019, Kerala, India.
authors.forename: Ranjan
authors.initials: R
authors.lastname: Preeti
authors.affiliation: Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695 019, Kerala, India; Center of Innovative and Applied Bioprocessing, C-127, II Floor, Phase 8, Industrial Area, SAS Nagar, Mohali 160 071, Punjab, India.
authors.forename: Ashok
authors.initials: A
authors.lastname: Pandey
authors.affiliation: Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram 695 019, Kerala, India. Electronic address: binodkannur@niist.res.in.
authors.forename: Parameswaran
authors.initials: P
authors.lastname: Binod
mesh_terms: D001419:Bacteria / Q000235:genetics*; D001681:Biological Assay; D057166:High-Throughput Screening Assays; D010088:Oxidoreductases / Q000235:genetics
chemical_list: D010088:Oxidoreductases
keywords: Alcohol oxidase; Enantioselectivity; Enantiospecific; High-throughput assay; Ketoreductase