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Multiple dextranases from the yeast Lipomyces starkeyi

Multiple dextranases from the yeast Lipomyces starkeyi

Millson, Stefan H. and Evans, Ivor Howell (2007) Multiple dextranases from the yeast Lipomyces starkeyi. Antonie van Leeuwenhoek, 92 (4). pp. 399-404. ISSN 0003-6072 (doi:10.1007/s10482-007-9168-0)

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Abstract

The soil yeast Lipomyces starkeyi (NCYC 1436) secretes dextranase activity into the growth medium. Resolution of a dextranase-active protein fraction by SDS-PAGE produced three protein bands, of 66 kDa, 68 kDa and 78 kDa, and isoelectric focusing of the same fraction resulted in seven protein bands, of pIs 3.50, 3.85, 4.20, 4.80, 4.85, 5.00 and 5.30. Dextranase activity was demonstrated for all the isoelectric forms, and for the 78 kDa species in the presence of SDS. Amino acid compositions of the 66 kDa, 68 kDa and 78 kDa protein bands were determined, and the N-termini of the 66 kDa and 78 kDa protein bands were sequenced: the first two amino acids at the N-terminus of each protein were alanine and valine, respectively; an alanine-valine pair is seen early in the N-terminal coding sequences of the dextranases and the isopullulanase produced by the phylogenetically disparate organisms contributing to glycosyl hydrolase family 49.

Item Type: Article
Uncontrolled Keywords: dextranase, GH family 49, isoforms, Lipomyces starkeyi, N-terminal sequences, yeast
Subjects: Q Science > QR Microbiology
Faculty / Department / Research Group: Faculty of Engineering & Science > Department of Life & Sports Sciences
Related URLs:
Last Modified: 05 Dec 2016 16:23
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/2516

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