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黑曲霉G-1125生淀粉糖化酶基因的克隆与序列分析 被引量:2

Cloning and sequence analysis of gene encoded raw-starch-digesting-glucoamylase from Aspergillus nigerG-1125
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摘要 从黑曲霉Aspergillus niger G-1125克隆到了生淀粉糖化酶菌基因的DNA及c DNA序列。序列分析表明,该生淀粉糖化酶基因组DNA序列编码区长2172 bp,c DNA编码区长1923 bp,该基因含有4个内含子,共编码640个氨基酸,前18个氨基酸为信号肽序列,该氨基酸序列中共含有2个潜在的糖基化位点,软件预测出该酶的分子质量约为68 ku,等电点为p H值4.07。 DNA and cDNA of raw-starch-digesting-glucoamylase were cloned from Aspergillus niger G- 1125. The sequence analysis revealed that the length of DNA and cDNA of this gene were 2 172 bp and 123 bp, respectively. The DNA sequence contained 4 introns and encoded a protein of 640 amino acids with a signal peptide of 18 amino acids and two potential glycosylation sites. The calculated molecular weight and isoelectric point of the enzyme were 68 ku and pH 4.07, respectively.
出处 《中国酿造》 CAS 北大核心 2015年第2期51-54,共4页 China Brewing
基金 国家自然科学基金(31000029) 国家高技术研究发展计划“863计划”(2012AA101204) 海南省自然科学基金(ZDFD 20120765) 海南省研究生创新科研课题(Hyb2011-4) 海南省引进集成应用专项(YJJC2011004) 海南省重大科技项目(ZDZX2013023-1) 中国热带农业科学院中央级公益院所基本科研业务费专项(ITBB2015RC06)
关键词 黑曲霉 生淀粉糖化酶 克隆 序列分析 Aspergillus niger, raw-starch-digesting-glucoamylase cloning sequence analysis
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