Gene cloning, expression and characterization of an exo-chitinase with high β-glucanase activity fro

来源 :中国生物工程学会第六次全国会员代表大会暨第九届学术年会 | 被引量 : 0次 | 上传用户:zz9506018
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
  Chitinases(EC 3.2.1.14)are the primary enzymes that catalyze the hydrolysis of recalcitrant chitin into valuable soluble oligosaccharides.Chitinase have a very broad range of applications in agriculture.However,the use of chitinase in aquafeed has rarely been investigated.Aeromonas veronii strain B565 is a gram-negative bacterium isolated from aquaculture pond sediment in China,and was found to have the ability to produce chitinase to control fungal or Myxozoa-related diseases.Strain B565 encodes five chitinases,namely Chi92(AEB48885.1),chitinase A(AEB48887.1),ChiB565(AEB48892.1),and two other chitinases(AEB48889.1,AEB50059.1).
其他文献
  极端嗜盐古生菌是盐湖、盐矿等高盐环境中最重要的微生物类群,在这种极端环境中,病毒是唯一的“捕食者”,是影响古生菌进化的重要因素.通过丝裂霉素C 诱导,我们从嗜盐古
  持留子是正常细胞随机地形成的休眠状态下不进行复制或者生长缓慢的变体,当用高剂量的抗生素长时间处理同基因型的细菌群体时,会有0.001%~0.1%的细菌亚群存活,并表现出对抗生素
耐药性相关MFS 外排泵基因所形成的耐药机制是临床上常见的细菌耐药机制的重要途径.本文对临床标本分离得到的六个种属病原菌1000 多菌株,包括鲍曼不动杆菌(238 株),肺炎克雷
会议
黄曲霉毒素(Aflatoxin)是主要由黄曲霉(Aspergillus flavus)和寄生曲霉(A.parasiticus)产生的一种1A 级强致癌物,其生物合成机制相当复杂,人们对其生物合成理解的局限性现已
会议
中长链聚羟基脂肪酸酯(mcl-PHA)是一大类由微生物合成的天然生物聚酯,因具有可再生性和生物降解性愈来愈受到人们的关注.Mcl-PHA可由一些假单胞菌利用自身的脂肪酸合成途径或
在我国,木质纤维素类可再生资源丰富,仅农作物秸杆年产就多达6亿多吨.这些纤维素类资源除部分用于造纸、建筑、纺织等行业外,大部分未能被有效利用,有些还被直接焚烧,造成了
  The self-alkalization of denitrifying automatic circulation(DAC)reactor resulted in a large increase of pH up to 9.20 and caused a tremendous accumulation o
  Coral reefs represent one of the richest ocean micro-scale environments that include diverse collection of both basic and advanced species.Analysis of the m
脂肪醇是具有8-22个碳原子链的脂肪族醇类,脂肪醇是生产高品质表面活性剂、洗涤剂、增塑剂、润滑剂等重要化工产品的基础原料.脂肪醇最主要的用途是作为原料,用于生产洗衣粉
Clean farm animal transgenics is ever-increasingly desirable as the introduction of unwanted sequences such as selectable marker genes (SMGs) raise public conce
会议