Journal of Microbiology

The Microbiological Society of Korea (한국미생물학회)
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Purification of carbosymethyl cellulase from hybrid between aspergillus niger and penicillium verruculosum

  • Published : 1996.03.01
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Abstract

The carboxymethyl cellulase (CMCase) was purified from the induced culture filtrate of hybrid TAPW15703 between Aspergillus niger and penicillium verruculosum made by nuclear transfer. The enzyme was purified 80 fold with an overall yield 17% from the culture medium by ammonium sulfate fractionation, Sephadex G-75 gel permeation chromatography, and DEAE-ion exchange column chromatography. The molecular weight of the CMCase has estimated to be 32,000 daltons on SDS-polyacrylamide gel electrophoresis and Sephadex G-150 gel permeation chromatography. The purified enzyme functions optimally at pH 4.0 and 4$0^{\circ}C$ The Km value for carbosymethyl cellulose was 68 mM. The enzyme activity was increased by the presence of $Mg^{2+}$and Mn$^{2+}$.

Keywords

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