| Title: | Isolation and functional characterization of novel isoprene synthase from Artocarpus heterophyllus (jackfruit) |
| Author(s): | Dive A; Singhal R; Srivastava S; Shukre K; James D; Shetty S; |
| Address: | "Institute of Chemical Technology, Matunga, Mumbai, India. GRID: grid.44871.3e. ISNI: 0000 0001 0668 0201 Godavari Biorefineries Ltd., Mahape, Navi Mumbai, India" |
| DOI: | 10.1007/s13205-022-03441-7 |
| ISSN/ISBN: | 2190-572X (Print) 2190-5738 (Electronic) 2190-5738 (Linking) |
| Abstract: | "Isoprene, a Natural Volatile Organic Compound (NVOC) is one of the chief by-products of plant metabolism with important applications in the synthesis of rubber and pharmaceuticals as a platform molecule. Isoprene was obtained earlier from petroleum sources; however, to synthesise it new fermentation-based strategies are being adopted. Bioinformatics tools were utilised to isolate the Isoprene Synthase (IspS) gene which converts the precursors Isopentenyl Diphosphate (IPP) and Dimethylallyl Diphosphate (DMAPP) into isoprene. Metabolic engineering strategies were to synthesise an isoprene-producing recombinant clone derived from Artocarpus heterophyllus (jackfruit). The functional characterization was done using the overexpression of the isoprene synthase gene in an Escherichia coli BL21 host. The recombinant clone, ISPS_GBL_001 (submitted to GenBank, National Centre for Biotechnology Information or NCBI) was used for fermentation in the batch and fed-batch mode to produce isoprene. Isoprene productivity of 0.08 g/g dextrose was obtained via the fed-batch mode maintaining the process parameters at optimum. The quantification and confirmation of isoprene was done using gas chromatography (GC) and GC-mass spectrometry (GC-MS) of the extracted sample, respectively. This study makes significant contribution to the ongoing research on bio-isoprene synthesis by highlighting a novel plant source of the IspS gene followed by, its successful expression in a recombinant host, validated by fermentation. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s13205-022-03441-7" |
| Keywords: | Artocarpus heterophyllus Fermentation Gas chromatography Isoprene Isoprene synthase Metabolic engineering; |
| Notes: | "PubMed-not-MEDLINEDive, Amol Singhal, Rekha Srivastava, Sangeeta Shukre, Kedar James, Deepak Shetty, Sneha eng MC_UP_1102/19/MRC_/Medical Research Council/United Kingdom Germany 2022/12/28 3 Biotech. 2023 Jan; 13(1):24. doi: 10.1007/s13205-022-03441-7. Epub 2022 Dec 23" |
