High expression and biosilica encapsulation of alkaline-active carbonic anhydrase for CO2 sequestration system development
DC Field | Value | Language |
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dc.contributor.author | Min, Ki-Ha | - |
dc.contributor.author | Son, Ryeo Gang | - |
dc.contributor.author | Ki, Mi-Ran | - |
dc.contributor.author | Choi, Yoo Seong | - |
dc.contributor.author | Pack, Seung Pil | - |
dc.date.accessioned | 2021-09-04T04:44:24Z | - |
dc.date.available | 2021-09-04T04:44:24Z | - |
dc.date.created | 2021-06-18 | - |
dc.date.issued | 2016-01 | - |
dc.identifier.issn | 0045-6535 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/90051 | - |
dc.description.abstract | Carbonic anhydrase (CA) is a biocatalyst for CO2 sequestration because of its distinctive ability to accelerate CO2 hydration. High production and efficient immobilization of alkaline-active CAs are required, because one potential application of CA is its use in the alkaline solvent-based CO2 absorption/desorption process. Here, we designed and applied an alpha-type CA from Hahella chejuensis (HCA), which was reported as highly active in alkaline conditions, but was mostly expressed as insoluble forms. We found that the signal peptide-removed form of RCA [HCA(SP-)] was successfully expressed in the soluble form [similar to 70 mg of purified HCA(SP-) per L of culture]. HCA(SP-) also displayed high pH stability in alkaline conditions, with maximal activity at pH 10; at this pH, similar to 90% activity was maintained for 2 h. Then, we prepared HCA(SP-)-encapsulated silica particles [HCA(SP-@)silica] via a spermine-mediated bio-inspired silicification method. HCA(SP-)@silica exhibited high-loading and highly stable CA activity. In addition, HCA(SP-)@silica retained more than 90% of the CA activity even after 10 cycles of use in mild conditions, and 80% in pH 10 conditions. These results will be useful for the development of practical CO2 sequestration processes employing CA. (C) 2015 Elsevier Ltd. All rights reserved. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.subject | ENZYME | - |
dc.subject | IMMOBILIZATION | - |
dc.subject | DIOXIDE | - |
dc.subject | ALPHA | - |
dc.subject | CAPTURE | - |
dc.title | High expression and biosilica encapsulation of alkaline-active carbonic anhydrase for CO2 sequestration system development | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Ki, Mi-Ran | - |
dc.contributor.affiliatedAuthor | Pack, Seung Pil | - |
dc.identifier.doi | 10.1016/j.chemosphere.2015.07.020 | - |
dc.identifier.scopusid | 2-s2.0-84951569236 | - |
dc.identifier.wosid | 000366776000018 | - |
dc.identifier.bibliographicCitation | CHEMOSPHERE, v.143, pp.128 - 134 | - |
dc.relation.isPartOf | CHEMOSPHERE | - |
dc.citation.title | CHEMOSPHERE | - |
dc.citation.volume | 143 | - |
dc.citation.startPage | 128 | - |
dc.citation.endPage | 134 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Environmental Sciences & Ecology | - |
dc.relation.journalWebOfScienceCategory | Environmental Sciences | - |
dc.subject.keywordPlus | ENZYME | - |
dc.subject.keywordPlus | IMMOBILIZATION | - |
dc.subject.keywordPlus | DIOXIDE | - |
dc.subject.keywordPlus | ALPHA | - |
dc.subject.keywordPlus | CAPTURE | - |
dc.subject.keywordAuthor | Bio-inspired silicification | - |
dc.subject.keywordAuthor | Biosilica encapsulation | - |
dc.subject.keywordAuthor | Carbonic anhydrase | - |
dc.subject.keywordAuthor | Hahella chejuensis | - |
dc.subject.keywordAuthor | CO2 sequestration | - |
dc.subject.keywordAuthor | Immobilization | - |
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