华北农学报 ›› 2011, Vol. 26 ›› Issue (3): 42-46. doi: 10.7668/hbnxb.2011.03.009

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香菇纤维素酶基cel6B的克隆及表达

杨婷, 裴雁曦, 王景雪   

  1. 山西大学生命科学学院, 山西太原 030006
  • 收稿日期:2011-01-25 出版日期:2011-06-28
  • 通讯作者: 王景雪(1961- ),女,山西新绛人,教授,博士,硕士生导师,主要从事植物基因工程研究。
  • 作者简介:杨婷(1982- ),女,河北唐山人,助理研究员,在读硕士,主要从事细胞生物学研究.
  • 基金资助:
    山西省攻关计划(2007031002-14)

Cloning of Celluase Gene cel6B from Lentinula edodes and Its Expression in Escherichia coil

YANG Ting, PEI Yan-xi, WANG Jing-xue   

  1. College of Life Science,Shanxi University,Taiyuan 030006,China
  • Received:2011-01-25 Published:2011-06-28

摘要: 以液体PDA中培养的香菇菌丝体为材料,提取香菇总RNA,通过RT-PCR方法,克隆得到纤维素酶基因cel6B,并成功构建了原核表达载体pET28a-cel6B;将该载体转人大肠杆菌BL21(DE3)中,构建工程菌,用IPTG诱导蛋白质的表达.SDS-PAGE电泳结果表明:在IPTG诱导下,cel6B基因编码出46.4 kDa的蛋白质CEL6B.将工程菌在CMC-Na(羧甲基纤维素钠)为唯一碳源的刚果红液体培养基中培养7 d后,培养基红色变浅,初步证明纤维素酶CEL6B具有分解纤维素的能力.

关键词: 香菇, 纤维素酶, cel6B基因, 刚果红, RT-PCR

Abstract: Total RNA was extracted from L.edodes cultured in liquid PDA medium.The predicted gene cel6B was cloned via RT-PCR and sequenced.The result of sequence analysis showed the gene belongs to Glycosyl hydrolases family 6.Prokaryotic expression vector pET28a-cel6B was constructed.The 46.4 kDa protein CEL6B was expressed based on the result of SDS-PAGE.The bacteria containing pET28a-cel6B was cultured in CMC-Na-congo red medium which has CMC-Na as the solo carbon source to test the cellulase activity.The result of primary bioactivity analysis showed that CEL6B has cellulase function.

Key words: Lentinula edodes, Cellulase, cel6B gene, Congo red, RT-PCR

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引用本文

杨婷, 裴雁曦, 王景雪. 香菇纤维素酶基cel6B的克隆及表达[J]. 华北农学报, 2011, 26(3): 42-46. doi: 10.7668/hbnxb.2011.03.009.

YANG Ting, PEI Yan-xi, WANG Jing-xue. Cloning of Celluase Gene cel6B from Lentinula edodes and Its Expression in Escherichia coil[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2011, 26(3): 42-46. doi: 10.7668/hbnxb.2011.03.009.

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