کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
34584 | 45034 | 2012 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Production of functional agarolytic nano-complex for the synergistic hydrolysis of marine biomass and its potential application in carbohydrate-binding module-utilizing one-step purification Production of functional agarolytic nano-complex for the synergistic hydrolysis of marine biomass and its potential application in carbohydrate-binding module-utilizing one-step purification](/preview/png/34584.png)
Marine algal polysaccharides are promising alternative resources to terrestrial biomass. Agarolytic enzymes degrade agarose to various kinds of oligosaccharides. In this study, we expressed miniCbpA, a recombinant scaffolding protein from Clostridium cellulovorans, in Escherichia coli. To assemble the agarolytic complex via cohesin–dockerin interaction, we constructed a chimeric agarase cAgaB from Zobellia galactanivorans containing the catalytic domain of AgaB fused with a dockerin domain from C. cellulovorans EngB. The assembly of functional agarolytic complexes increased the activity against the agar substrate approximately 1.4-fold compared with that for the corresponding enzymes alone. The carbohydrate-binding module (CBM) of miniCbpA was used as a tag for CBM-utilizing one-step purification using cellulose as a support. This is the first report on the formation of agarolytic complexes using the cohesin–dockerin interaction system. The assembly of agar-degrading complexes will lead to the commercial production of useful products from agar biomass at low costs.
► The assembled functional agarolytic complex synergistically hydrolyze the agar substrate.
► Developing the CBM-utilizing one-step purification for avoiding the loss of product.
► Overall increasing agarase activities lead to efficient marine biomass-utilizing processes.
Journal: Process Biochemistry - Volume 47, Issue 5, May 2012, Pages 877–881