Microbiology and Biotechnology Letters (한국미생물·생명공학회지)

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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Cloning of Chondroitinase ABC from Bacteroides stercoris HJ-15, a Human Intestinal Anaerobic Bacterium

사람 장내세균군집 유래 Bacteorides stericoris HJ-15의 Chondroitinase ABC의 클로닝

  • Received : 2015.12.16
  • Accepted : 2016.02.28
  • Published : 2016.06.28
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Abstract

The gene encoding chondroitinase ABC from a genomic library of Bacteroides stercoris HJ-15, which was isolated from human feces, was cloned. The cloned gene consisted of 3,090 bp and was predicted to encode a 1,029−amino-acid protein. The B. stercoris chondroitinase ABC gene was not homologous to other chondroitinase ABC genes; however, its amino acid sequence showed 71% homology to that of Bacteroides thetaiotaomicron. The gene was cloned in the pET-26b+ expression vector and expressed under the T7 promoter in Escherichia coli BL21(DE3). The purified recombinant chondroitinase ABC degraded chondroitin sulfates A, B, and C.

사람의 분변으로부터 분리한 Bacteroides stericoris HJ-15로부터 chondroitinase ABC 유전자를 클로닝하였다. 클로닝한 chondroitinase ABC 유전자는 3,090 bp, 1,029 아미노산으로 구성되어 있었다. B. stercoris chondroitinase ABC 유전자는 이미 보고된 chondroitinase ABC 유전자들과 호몰로지가 없었으나, 아미노산서열에서는 82% 호몰로지를 보였다. T7 promoter를 가진 pET-26b+ expression vector에 클로닝한 chondroitinase ABC 유전자를 Escherichia coli BL21 (DE3)에서 발현하여 정제한 재조합 chondroitinase ABC는 chondroitin sulfate A, B 및 C를 모두 분해하였다.

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References

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