Novel Beta-Galactoside-Alpha 2,3-Sialyltransferase, a Gene Encoding Thereof, and a Method for Producing Thereof

摘要

The present invention provides a novel &bgr;-galactoside-α2,3-sialyltransferase and a nucleic acid encoding the sialyltransferase. The present invention also provides a microorganism producing the sialyltransferase, as well as a method for producing the sialyltransferase using such a microorganism. The present invention further provides a vector carrying a nucleic acid encoding the sialyltransferase, and a host cell transformed with the vector, as well as a method for producing a recombinant &bgr;-galactoside-α2,3-sialyltransferase. The present invention further provides a method for preparing a sialylsugar chain, which uses the sialyltransferase of the present invention.