Abstract:Streptococcus lutetiensis RB4 was isolated from the rumen of beef cattle. An amylase gene from the isolate RB4 was cloned and expressed in Escherichia coli DH5α by using pGEMT-Easy vector system. S. lutetiensis is a member of S. bovis / S. equinus complex. Sequence characterization of the cloned gene AmySL displayed a 1640 bp long with an open reading frame coding 298 amino acids. AmySL has a molecular mass of 33.456 Da which was considerably smaller. The optimal pH and temparature for AmySL werepH 6.5 and 4… Show more
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