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


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.


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