摘要
以肺炎克雷伯氏菌As1.1736的基因组为模板,通过PCR技术成功地扩增了dhaD基因,并构建了dhaD和dhaKL基因的共表达载体。序列分析结果表明:dhaD基因全长1104bp,编码367个氨基酸残基。SDS-PAGE电泳结果表明:dhaD和dhaKL基因均获得了有效表达;上清液中酶活性分别为甘油脱氢酶23.2U/ml,二羟丙酮激酶25.6U/ml。
The gene of dhaD encoding glycerol dehydrogenase was amplified by PCR from the genomic DNA of Klebsiella. pneumoniae As 1.1736 and the expression vector pET-28a（＋）/dhaKL-dhaD was constructed. Sequence analysis showed that dhaD gene is 1104 bp length and encodes 367 amino acid residues; SDS-PAGE showed that the dhaKL gene and dhaD are expressed, and the enzyme activities of glycerol dehydrogenase and dihydroxyacetone kinase are 23.2 U/ml 25.6 U/ml respectively in supernant.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2008年第6期222-225,共4页
Food Science
