Phospholipase D, with a molecular mass of 64 kDa, was purified from the psychrophile, Shewanella sp. The enzyme showed maximal activity at pH 7.8 and 40°C in the presence of the Ca2+-ion, and its activity at 10°C was 6.5% of maximum. The enzyme exhibited high activity to the non-micelle form of phosphatidylcholine in an aqueous solution containing water miscible alcohols such as methanol, ethanol, iso-propanol, and n-propanol. Nucleotide sequencing of the enzyme gene yielded a deduced amino acid sequence, which showed 36.2% identity to that of Streptomyces chromofuscus phopsholipase D alone. The low sequence similarity to other phopsholipase D enzymes suggests that the purified enzyme might be a novel phospholipase D.
CITATION STYLE
Tsuruta, H., Hayashi, R., Ohkawa, H., Ohkatsu, N., Morimoto, M., Nishimoto, K., … Aizono, Y. (2007). Characterisitics and gene cloning of phospholipase D of the psychrophile, Shewanella sp. Bioscience, Biotechnology and Biochemistry, 71(10), 2534–2542. https://doi.org/10.1271/bbb.70325
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