O-phosphoserine sulfhydrylase mutants and method for production of cysteine using the same

Disclosed is an O-phosphoserine sulfhydrylase (OPSS) mutant which has a Mycobacterium smegmatis -derived amino acid sequence corresponding to that of SEQ ID NO: 1 which is devoid of three to seven C-terminal amino acid residues. Also, a nucleic acid molecule encoding the OPSS mutant, an expression v...

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Main Authors UM, HYE WON, JO, JAE HYUN, CHANG, JIN SOOK, SONG, BYEONG CHEOL, LEE, KYOUNG MIN, SHIN, SOO AN
Format Patent
LanguageEnglish
French
German
Published 25.04.2012
Subjects
BEER
BIOCHEMISTRY
CHEMISTRY
COMPOSITIONS THEREOF
CULTURE MEDIA
ENZYMOLOGY
FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIREDCHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERSFROM A RACEMIC MIXTURE
METALLURGY
MICROBIOLOGY
MICROORGANISMS OR ENZYMES
MUTATION OR GENETIC ENGINEERING
PROPAGATING, PRESERVING OR MAINTAINING MICROORGANISMS
SPIRITS
VINEGAR
WINE
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Summary:Disclosed is an O-phosphoserine sulfhydrylase (OPSS) mutant which has a Mycobacterium smegmatis -derived amino acid sequence corresponding to that of SEQ ID NO: 1 which is devoid of three to seven C-terminal amino acid residues. Also, a nucleic acid molecule encoding the OPSS mutant, an expression vector carrying the nucleic acid molecule, and a transformant transformed with the expression vector are disclosed. In addition, a method is provided for producing cysteine in which O-phospho-L-serine (OPS) is reacted with a sulfide in the presence of the OPSS mutant. The OPSS mutant has improved enzymatic activity and can be applied to the environmentally friendly production of L-cysteine through a simple enzymatic conversion reaction.
Bibliography:Application Number: EP20110185853