Heterologous expression and characterization of Klebsiella oxytoca lysine decarboxylase / 生物工程学报
Chinese Journal of Biotechnology
;
(12): 527-531, 2016.
Artigo
em Chinês
| WPRIM
| ID: wpr-337444
ABSTRACT
Cadaverine is a biogenic amine that has the potential to become an important platform chemical for the production of industrial polymers, such as polyamides and polyurethanes. We reported here a lysine decarboxylase from Klebsiella oxytoca. The lysine decarboxylase from Klebsiella oxytoca was cloned to Escherichia coli to get the strain LN18. The specific activity of the crude protein from LN18 reached 30 000 U. The molecular weight was about 80 kDa. The optimum temperature and pH of the crude protein were 55 ℃ and 5.5 respectively. The specific activity could keep over 30% at pH 8.0 compared the one at pH 5.5, much difference from Escherichia coli lysine decarboxylase CadA. Mg²⁺ was positive to the specific activity, whereas Fe²⁺, Zn²⁺ and Ca²⁺ were negative.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Temperatura
/
Proteínas de Bactérias
/
Carboxiliases
/
Cadaverina
/
Klebsiella oxytoca
/
Escherichia coli
/
Genética
/
Concentração de Íons de Hidrogênio
/
Metabolismo
Idioma:
Chinês
Revista:
Chinese Journal of Biotechnology
Ano de publicação:
2016
Tipo de documento:
Artigo
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