|本期目录/Table of Contents|

[1]刘艳海,姚大伟,刘建新,等.1株嗜热性羽毛降解菌的分离鉴定及其酶学性质[J].江苏农业科学,2017,45(10):232-237.
 Liu Yanhai,et al.Isolation and identification of a thermophilic feather degrading bacterium and its enzymatic properties[J].Jiangsu Agricultural Sciences,2017,45(10):232-237.
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1株嗜热性羽毛降解菌的分离鉴定及其酶学性质(PDF)
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第45卷
期数:
2017年10期
页码:
232-237
栏目:
资源与环境
出版日期:
2017-05-20

文章信息/Info

Title:
Isolation and identification of a thermophilic feather degrading bacterium and its enzymatic properties
作者:
刘艳海 姚大伟 刘建新 杨德吉
南京农业大学动物医学院,江苏南京 210095
Author(s):
Liu Yanhaiet al
关键词:
嗜热性角蛋白降解菌角蛋白酶羽毛角蛋白地衣芽孢杆菌Y6酶学性质
Keywords:
-
分类号:
S182
DOI:
-
文献标志码:
A
摘要:
为从环境中得到1株嗜热高效角蛋白降解菌,用以羽毛粉为唯一碳源、氮源的培养基进行筛选。经筛选得到1株嗜热降解羽毛角蛋白的Y6菌株,通过对该菌株菌落、菌体形态特征、生理生化特性测定和16S rRNA分析,使用美国国立生物技术信息中心(NCBI)的BLAST进行16S rRNA的相似性比对。相似性比对结果显示,Y6菌株与地衣芽孢杆菌Xmb047(Bacillus licheniformis Xmb047)的同源性99%,初步认定该菌株为地衣芽孢杆菌(Bacillus licheniformis),命名为Y6(GenBank登陆号KY082766)。采用该菌降解完整羽毛,发酵72 h后,完整羽毛仅剩下羽轴,羽枝被完全降解,说明Y6菌株有着较强的羽毛降解能力;用不同浓度硫酸铵溶液盐析发酵产物上清液,筛选出硫酸铵浓度为70%时,分离的粗酶液总活性最高。酶活性试验表明,Y6所产蛋白酶最适反应温度为70 ℃,最适pH值为8.0,Fe3+、Zn2+对蛋白酶活性有较强的抑制作用,阴离子表面活性剂十二烷基硫酸钠(SDS)、金属蛋白酶抑制剂乙二胺四乙酸(EDTA)能较强地抑制蛋白酶活性,表明该蛋白酶属于金属蛋白酶。
Abstract:
-

参考文献/References:

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相似文献/References:

[1]刘标,陈薇,吴迎奔,等.嗜热角蛋白降解菌的分离筛选及降解特性[J].江苏农业科学,2022,50(13):226.
 Liu Biao,et al.Isolation, screening and degradation characteristics of thermophilic keratin-degrading bacteria[J].Jiangsu Agricultural Sciences,2022,50(10):226.

备注/Memo

备注/Memo:
收稿日期:2016-11-16
基金项目:农业部“948”计划(编号:2015-Z40)。
作者简介:刘艳海(1991—),男,安徽亳州人,硕士,主要从事分子生物学研究。E-mail:2014107109@njau.edu.cn。
通信作者:杨德吉,博士,教授,主要从事分子生物学研究。E-mail:djyang@njau.edu.cn。
更新日期/Last Update: 2017-05-20