食品科学 ›› 2006, Vol. 27 ›› Issue (10): 331-334.

• 工艺技术 • 上一篇    下一篇

微生物谷氨酰胺转胺酶沉淀分离方法的研究

 郝伟, 王璋, 蔡慧农   

  1. 中国食品发酵工业研究院; 集美大学生物工程学院
  • 出版日期:2006-10-15 发布日期:2011-11-16

Primary Study on Separation and Purification of a Microbial Transglutaminase

 HAO  Wei, WANG  Zhang, CAI  Hui-Nong   

  1. 1.China National Institute of Food and Fermentation Industries, Beijing 100027, China; 2.College of Bio-technology, Jimei University, Xiamen 361201, China
  • Online:2006-10-15 Published:2011-11-16

摘要: 微生物谷氨酰胺转胺酶(MTG)可通过催化蛋白质谷氨酰胺的酰基转移反应改变蛋白质的结构和性质,是一种有广泛应用前景的重要新型酶制剂。本文根据微生物谷胺酰胺转胺酶的基本理化性质,先后采用了高速离心、硫酸铵盐析沉淀、乙醇沉淀、丙酮沉淀等方法,对微生物谷胺酰胺转胺酶的初步提纯工艺进行了研究讨论,确定了该酶不同用途的初提方法,并为该酶的进一步纯化做好准备。

关键词:  , 微生物, 谷胺酰胺转胺酶, 分离, 沉淀, 酶学性质

Abstract: The enzyme of microbial transglutaminase (MTG) can modify the structure and properties of proteins through catalyzing an acyl transfer reaction of a γ-carboxyamide group of glutamine residue in a peptide chain, resulting the cross-linking of proteins. In this paper, based on the general physical and chemical character of MTG, several satisfied methods was decided after studied on using high centrifugation, ammonium sulfate precipitation, alcohol precipitation, acetone precipitation to separation MTG.

Key words:  , microbial; transglutaminase; separation; precipitation; enzymatic character;