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author:

王瑞杰 (王瑞杰.) [1] | Nokuthula Peace Mchunu (Nokuthula Peace Mchunu.) [2] | 牛丹丹 (牛丹丹.) [3] | Kugenthiren Permaul (Kugenthiren Permaul.) [4] | Suren Singh (Suren Singh.) [5] | 刘晓光 (刘晓光.) [6] | 路福平 (路福平.) [7]

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CQVIP PKU CSCD

Abstract:

[目的]疏绵状嗜热丝孢菌是一种嗜热丝状真菌,具有合成与分泌多种耐热酶的能力,从中找寻酶活高、耐热性能优良的β-葡聚糖酶.[方法]对疏绵状嗜热丝孢菌其中一个外切β-葡聚糖酶的编码基因glnB进行克隆,并在毕赤酵母GS115中表达.[结果]在摇瓶水平上重组菌的产酶活为11.5 U/mL,重组酶在SDS-PAGE中的大小约为48 kD.重组GlnB最适作用温度为65℃,最适作用pH为5.0;在低于50℃或pH 3.0-10.0之间具有良好稳定性.重组酶水解海带三糖,首先生成单糖和二糖,延长酶作用时间,可以进一步将其中的二糖部分水解为单糖.[结论]疏绵状嗜热丝孢菌来源的重组酶GlnB为外切p-葡聚糖酶,具有较好的耐热性能和pH稳定性.

Keyword:

外切β-葡聚糖酶 疏绵状嗜热丝孢菌 酶学特征

Community:

  • [ 1 ] [王瑞杰]天津科技大学
  • [ 2 ] [Nokuthula Peace Mchunu]Department of Biotechnology & Food Technology,Faculty of Applied Sciences,Durban University of Technology,P.O.Box 1334,Durban,4001,South Africa
  • [ 3 ] [牛丹丹]福州大学
  • [ 4 ] [Kugenthiren Permaul]Department of Biotechnology & Food Technology,Faculty of Applied Sciences,Durban University of Technology,P.O.Box 1334,Durban,4001,South Africa
  • [ 5 ] [Suren Singh]Department of Biotechnology & Food Technology,Faculty of Applied Sciences,Durban University of Technology,P.O.Box 1334,Durban,4001,South Africa
  • [ 6 ] [刘晓光]天津科技大学
  • [ 7 ] [路福平]天津科技大学

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Source :

微生物学通报

ISSN: 0253-2654

CN: 11-1996/Q

Year: 2016

Issue: 2

Volume: 43

Page: 285-291

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count: -1

Chinese Cited Count:

30 Days PV: 0

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