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A Novel Antifungal Protein with Lysozyme-Like Activity from Seeds of Clitoria ternatea

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Abstract

An antifungal protein with a molecular mass of 14.3 kDa was isolated from the seeds of butterfly pea (Clitoria ternatea) and designated as Ct protein. The antifungal protein was purified using different methods including ammonium sulphate precipitation, ion exchange chromatography on DEAE-cellulose and gel filtration on Sephadex G-50 column. Ct protein formed a single colourless rod-shaped crystal by hanging drop method after 7 days of sample loading. The protein showed lytic activity against Micrococcus luteus and broad-spectrum, fungicidal activity, particularly against the most clinically relevant yeasts, such as Cryptococcus neoformans, Cryptococcus albidus, Cryptococcus laurentii, Candida albicans and Candida parapsilosis. It also exerted an inhibitory activity on mycelial growth in several mould species including Curvularia sp., Alternaria sp., Cladosporium sp., Aspergillus flavus, Aspergillus fumigatus, Aspergillus niger, Rhizopus sp., and Sclerotium sp. The present study adds to the literature on novel seed proteins with antifungal activity.

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Authors and Affiliations

  1. Department of Biotechnology and Microbiology, Kannur University, Kannur, Kerala, 670 661, India

    Ajesh K & Sreejith K

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  1. Ajesh K
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  2. Sreejith K
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Correspondence to Sreejith K.

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K, A., K, S. A Novel Antifungal Protein with Lysozyme-Like Activity from Seeds of Clitoria ternatea . Appl Biochem Biotechnol 173, 682–693 (2014). https://doi.org/10.1007/s12010-014-0880-8

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  • DOI: https://doi.org/10.1007/s12010-014-0880-8

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