Cloning, expression and characterization of acharan sulfate-degrading heparin lyase II from Bacteroides stercoris HJ-15
This study focused on the cloning, expression and characterization of recombinant heparinase II (rHepII) from Bacteroides stercoris HJ-15. The heparinase II gene from Bact. stercoris HJ-15 was identified by Southern blotting and the sequence was deposited in GenBank. The gene was cloned and overexpr...
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Published in | Journal of applied microbiology Vol. 108; no. 1; pp. 226 - 235 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
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Oxford, UK
Oxford, UK : Blackwell Publishing Ltd
2010
Blackwell Publishing Ltd Blackwell |
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Abstract | This study focused on the cloning, expression and characterization of recombinant heparinase II (rHepII) from Bacteroides stercoris HJ-15. The heparinase II gene from Bact. stercoris HJ-15 was identified by Southern blotting and the sequence was deposited in GenBank. The gene was cloned and overexpressed in Escherichia coli, and rHepII was purified using two simple ion-exchange column chromatography steps. Enzymatic properties and substrate specificities of rHepII were assessed and its kinetic constants were calculated. Heparin-like glycosaminoglycans (HLGAGs) were digested with rHepII under optimal reaction conditions, and the products were analysed by SAX-HPLC. The heparinase II gene is 2322-bp long and consists of 773 amino acids. rHepII is most active in 50 mmol l⁻¹ sodium phosphate buffer with 75 mmol l⁻¹ NaCl (pH 7·4) at 32°C, and the activity is stable at 4°C for 15 days on storage. Acharan sulfate is the best substrate for rHepII, followed by heparan sulfate and heparin. The major degradation products were verified as highly sulfated disaccharides through SAX-HPLC analysis. It means that rHepII prefers iduronic acid over glucuronic acid on the HLGAG structure. This study provides easy and certain means for obtaining large amounts of pure rHepII and also provides important information regarding the tendencies of this enzyme and its digested products. rHepII digests HLGAGs in a different manner than heparinases from Flavobacterium heparinum; therefore, we anticipate that rHepII will be a powerful tool for studies of GAGs and GAGs lyases. |
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AbstractList | Aims: This study focused on the cloning, expression and characterization of recombinant heparinase II (rHepII) from Bacteroides stercoris HJ‐15.
Methods and Results: The heparinase II gene from Bact. stercoris HJ‐15 was identified by Southern blotting and the sequence was deposited in GenBank. The gene was cloned and overexpressed in Escherichia coli, and rHepII was purified using two simple ion–exchange column chromatography steps. Enzymatic properties and substrate specificities of rHepII were assessed and its kinetic constants were calculated. Heparin‐like glycosaminoglycans (HLGAGs) were digested with rHepII under optimal reaction conditions, and the products were analysed by SAX‐HPLC.
Conclusions: The heparinase II gene is 2322‐bp long and consists of 773 amino acids. rHepII is most active in 50 mmol l−1 sodium phosphate buffer with 75 mmol l−1 NaCl (pH 7·4) at 32°C, and the activity is stable at 4°C for 15 days on storage. Acharan sulfate is the best substrate for rHepII, followed by heparan sulfate and heparin. The major degradation products were verified as highly sulfated disaccharides through SAX‐HPLC analysis. It means that rHepII prefers iduronic acid over glucuronic acid on the HLGAG structure.
Significance and Impact of the Study: This study provides easy and certain means for obtaining large amounts of pure rHepII and also provides important information regarding the tendencies of this enzyme and its digested products. rHepII digests HLGAGs in a different manner than heparinases from Flavobacterium heparinum; therefore, we anticipate that rHepII will be a powerful tool for studies of GAGs and GAGs lyases. AIMSThis study focused on the cloning, expression and characterization of recombinant heparinase II (rHepII) from Bacteroides stercoris HJ-15.METHODS AND RESULTSThe heparinase II gene from Bact. stercoris HJ-15 was identified by Southern blotting and the sequence was deposited in GenBank. The gene was cloned and overexpressed in Escherichia coli, and rHepII was purified using two simple ion-exchange column chromatography steps. Enzymatic properties and substrate specificities of rHepII were assessed and its kinetic constants were calculated. Heparin-like glycosaminoglycans (HLGAGs) were digested with rHepII under optimal reaction conditions, and the products were analysed by SAX-HPLC.CONCLUSIONSThe heparinase II gene is 2322-bp long and consists of 773 amino acids. rHepII is most active in 50 mmol l(-1) sodium phosphate buffer with 75 mmol l(-1) NaCl (pH 7.4) at 32 degrees C, and the activity is stable at 4 degrees C for 15 days on storage. Acharan sulfate is the best substrate for rHepII, followed by heparan sulfate and heparin. The major degradation products were verified as highly sulfated disaccharides through SAX-HPLC analysis. It means that rHepII prefers iduronic acid over glucuronic acid on the HLGAG structure.SIGNIFICANCE AND IMPACT OF THE STUDYThis study provides easy and certain means for obtaining large amounts of pure rHepII and also provides important information regarding the tendencies of this enzyme and its digested products. rHepII digests HLGAGs in a different manner than heparinases from Flavobacterium heparinum; therefore, we anticipate that rHepII will be a powerful tool for studies of GAGs and GAGs lyases. AbstractAims: This study focused on the cloning, expression and characterization of recombinant heparinase II (rHepII) from Bacteroides stercoris HJ-15.Methods and Results: The heparinase II gene from Bact. stercoris HJ-15 was identified by Southern blotting and the sequence was deposited in GenBank. The gene was cloned and overexpressed in Escherichia coli, and rHepII was purified using two simple ion-exchange column chromatography steps. Enzymatic properties and substrate specificities of rHepII were assessed and its kinetic constants were calculated. Heparin-like glycosaminoglycans (HLGAGs) were digested with rHepII under optimal reaction conditions, and the products were analysed by SAX-HPLC.Conclusions: The heparinase II gene is 2322-bp long and consists of 773 amino acids. rHepII is most active in 50 mmol l-1 sodium phosphate buffer with 75 mmol l-1 NaCl (pH 7.4) at 32C, and the activity is stable at 4C for 15 days on storage. Acharan sulfate is the best substrate for rHepII, followed by heparan sulfate and heparin. The major degradation products were verified as highly sulfated disaccharides through SAX-HPLC analysis. It means that rHepII prefers iduronic acid over glucuronic acid on the HLGAG structure.Significance and Impact of the Study: This study provides easy and certain means for obtaining large amounts of pure rHepII and also provides important information regarding the tendencies of this enzyme and its digested products. rHepII digests HLGAGs in a different manner than heparinases from Flavobacterium heparinum; therefore, we anticipate that rHepII will be a powerful tool for studies of GAGs and GAGs lyases. This study focused on the cloning, expression and characterization of recombinant heparinase II (rHepII) from Bacteroides stercoris HJ-15. The heparinase II gene from Bact. stercoris HJ-15 was identified by Southern blotting and the sequence was deposited in GenBank. The gene was cloned and overexpressed in Escherichia coli, and rHepII was purified using two simple ion-exchange column chromatography steps. Enzymatic properties and substrate specificities of rHepII were assessed and its kinetic constants were calculated. Heparin-like glycosaminoglycans (HLGAGs) were digested with rHepII under optimal reaction conditions, and the products were analysed by SAX-HPLC. The heparinase II gene is 2322-bp long and consists of 773 amino acids. rHepII is most active in 50 mmol l(-1) sodium phosphate buffer with 75 mmol l(-1) NaCl (pH 7.4) at 32 degrees C, and the activity is stable at 4 degrees C for 15 days on storage. Acharan sulfate is the best substrate for rHepII, followed by heparan sulfate and heparin. The major degradation products were verified as highly sulfated disaccharides through SAX-HPLC analysis. It means that rHepII prefers iduronic acid over glucuronic acid on the HLGAG structure. This study provides easy and certain means for obtaining large amounts of pure rHepII and also provides important information regarding the tendencies of this enzyme and its digested products. rHepII digests HLGAGs in a different manner than heparinases from Flavobacterium heparinum; therefore, we anticipate that rHepII will be a powerful tool for studies of GAGs and GAGs lyases. This study focused on the cloning, expression and characterization of recombinant heparinase II (rHepII) from Bacteroides stercoris HJ-15. The heparinase II gene from Bact. stercoris HJ-15 was identified by Southern blotting and the sequence was deposited in GenBank. The gene was cloned and overexpressed in Escherichia coli, and rHepII was purified using two simple ion-exchange column chromatography steps. Enzymatic properties and substrate specificities of rHepII were assessed and its kinetic constants were calculated. Heparin-like glycosaminoglycans (HLGAGs) were digested with rHepII under optimal reaction conditions, and the products were analysed by SAX-HPLC. The heparinase II gene is 2322-bp long and consists of 773 amino acids. rHepII is most active in 50 mmol l⁻¹ sodium phosphate buffer with 75 mmol l⁻¹ NaCl (pH 7·4) at 32°C, and the activity is stable at 4°C for 15 days on storage. Acharan sulfate is the best substrate for rHepII, followed by heparan sulfate and heparin. The major degradation products were verified as highly sulfated disaccharides through SAX-HPLC analysis. It means that rHepII prefers iduronic acid over glucuronic acid on the HLGAG structure. This study provides easy and certain means for obtaining large amounts of pure rHepII and also provides important information regarding the tendencies of this enzyme and its digested products. rHepII digests HLGAGs in a different manner than heparinases from Flavobacterium heparinum; therefore, we anticipate that rHepII will be a powerful tool for studies of GAGs and GAGs lyases. |
Author | Hyun, Y.-J Lee, K.-S Kim, D.-H |
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Keywords | Polysaccharide-lyases gene cloning Enzyme Applied microbiology Lyases Sulfates expression and characterization Bacteroidaceae Bacteroides Characterization Degradation acharan sulfate lyase Heparin lyase Bacteria Bacteroides stercoris HJ-15 Molecular cloning Carbon-oxygen lyases glycobiology |
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Snippet | This study focused on the cloning, expression and characterization of recombinant heparinase II (rHepII) from Bacteroides stercoris HJ-15. The heparinase II... Aims: This study focused on the cloning, expression and characterization of recombinant heparinase II (rHepII) from Bacteroides stercoris HJ‐15. Methods and... This study focused on the cloning, expression and characterization of recombinant heparinase II (rHepII) from Bacteroides stercoris HJ-15. The heparinase II... AbstractAims: This study focused on the cloning, expression and characterization of recombinant heparinase II (rHepII) from Bacteroides stercoris HJ-15.Methods... AIMSThis study focused on the cloning, expression and characterization of recombinant heparinase II (rHepII) from Bacteroides stercoris HJ-15.METHODS AND... |
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SubjectTerms | acharan sulfate lyase Bacterial Proteins - biosynthesis Bacterial Proteins - chemistry Bacterial Proteins - genetics Bacterial Proteins - isolation & purification Bacteroides Bacteroides - enzymology Bacteroides - genetics Bacteroides stercoris HJ-15 Base Sequence Biological and medical sciences Chromatography, Ion Exchange Cloning, Molecular Escherichia coli expression and characterization Flavobacterium heparinum Fundamental and applied biological sciences. Psychology gene cloning Gene Expression glycobiology Glycosaminoglycans - chemistry Glycosaminoglycans - metabolism Heparin Lyase - biosynthesis Heparin Lyase - chemistry Heparin Lyase - genetics Heparin Lyase - isolation & purification Microbiology molecular cloning Molecular Sequence Data Recombinant Proteins - biosynthesis Recombinant Proteins - chemistry Recombinant Proteins - genetics Recombinant Proteins - isolation & purification Substrate Specificity - physiology |
Title | Cloning, expression and characterization of acharan sulfate-degrading heparin lyase II from Bacteroides stercoris HJ-15 |
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