Journal
3 BIOTECH
Volume 7, Issue -, Pages -Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s13205-017-0674-0
Keywords
Marine; Metagenome; Amylase; Halotolerant; Arabian Sea
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Funding
- University Grants Commission, Govt. of India [41/527/2012]
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Functional screening of a metagenomic library of marine sediment revealed an amylolytic clone BTM109. This report states the purification and characterization of a moderately halotolerant alpha-amylase, with more than 51% activity in 2.5 M NaCl. The molecular mass of purified protein was determined to be 55.7 kDa by MALDI-TOF MS. The optimum pH for enzyme activity was pH 7 and temperature for maximal activity was 40 degrees C. At 5 mM concentration, Ca2+ enhanced the enzyme activity indicating that the enzyme is a Ca2+ dependent alpha-amylase which was confirmed by the starch hydrolysis pattern using TLC. These physico-chemical properties support the suitability of this enzyme for various industrial applications.
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