Mitsui Chemicals, Inc.

Mitsuo Koito

Tadashi Araki

Tomonori Hidesaki

Seiichi Watanabe

Kiyoteru Nagahara

Keita Nishida

Nobuhiro Fukuhara

Setsuo Yoshino

Masami Osabe

Hitoki Miyake

This invention relates to DNA encoding a novel enzyme having activity of synthesizing D-serine from formaldehyde and glycine, recombinant DNA constructed by integrating such DNA into a vector, a transformant transformed with the recombinant DNA, and a method for producing D-serine from formaldehyde and glycine with the use of the enzyme.

DNA encoding novel enzyme having D-serine synthase activity, method of producing the enzyme and method of producing D-serine by using the same

This invention relates to DNA encoding an enzyme having activity of synthesizing D-serine from formaldehyde and glycine, recombinant DNA constructed by integrating such DNA into a vector, a transformant transformed with the recombinant DNA, and a method for producing D-serine from formaldehyde and glycine with the use of the enzyme.

A purified N-t-butoxycarbonylphenylalanine ester preparation having an enhanced optical activity can be obtained by bringing an N-t-butoxycarbonylphenylalanine ester preparation containing an optically active compound into contact with an aliphatic hydrocarbon, extracting the optically active compound with the aliphatic hydrocarbon, and recovering the optically active compound from the resulting extract.

Process for preparing N-t-butoxycarbonylphenylalanine ester

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Omuta, Japan

Mitsuo Koito