Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/45776
Registo completo
Campo DC | Valor | Idioma |
---|---|---|
dc.contributor.author | Machado, Raul | por |
dc.contributor.author | Azevedo-Silva, João | por |
dc.contributor.author | Correia, Cristina | por |
dc.contributor.author | Collins, Tony | por |
dc.contributor.author | Arias, Francisco Javier | por |
dc.contributor.author | Rodríguez-Cabello, Jose Carlos | por |
dc.contributor.author | Casal, Margarida | por |
dc.date.accessioned | 2017-05-31T15:01:41Z | - |
dc.date.available | 2017-05-31T15:01:41Z | - |
dc.date.issued | 2013-02-05 | - |
dc.identifier.citation | Machado M., Correia C., Azevedo-Silva J, Collins T, Arias J, Rodríguez-Cabello J.C. and Casal M. (2013). High level expression and facile purification of recombinant silk-elastin-like polymers in auto induction shake flask cultures. AMB Express, Feb 5; 3(1):11. DOI: 10.1186/2191-0855-3-11. | por |
dc.identifier.issn | 2191-0855 | por |
dc.identifier.uri | https://hdl.handle.net/1822/45776 | - |
dc.description.abstract | Silk-elastin-like polymers (SELPs) are protein-based polymers composed of repetitive amino acid sequence motifs found in silk fibroin (GAGAGS) and mammalian elastin (VPGVG). These polymers are of much interest, both from a fundamental and applied point of view, finding potential application in biomedicine, nanotechnology and as materials. The successful employment of such polymers in such diverse fields, however, requires the ready availability of a variety of different forms with novel enhanced properties and which can be simply prepared in large quantities on an industrial scale. In an attempt to create new polymer designs with improved properties and applicability, we have developed four novel SELPs wherein the elastomer forming sequence poly(VPGVG) is replaced with a plastic-like forming sequence, poly(VPAVG), and combined in varying proportions with the silk motif. Furthermore, we optimised a simplified production procedure for these, making use of an autoinduction medium to reduce process intervention and with the production level obtained being 6-fold higher than previously reported for other SELPs, with volumetric productivities above 150 mg/L. Finally, we took advantage of the known enhanced stability of these polymers in developing an abridged, non-chromatographic downstream processing and purification protocol. A simple acid treatment allowed for cell disruption and the obtention of relative pure SELP in one-step, with ammonium sulphate precipitation being subsequently used to enable improved purity. These simplified production and purification procedures improve process efficiency and reduce costs in the preparation of these novel polymers and enhances their potential for application. | por |
dc.description.sponsorship | This work was financially supported by the European Comission via the 7th Framework Programme project EcoPlast (FP7-NMP-2009-SME-3, collaborative project number 246176), by Portuguese funding from FEDER through POFC – COMPETE and PEst project C/BIA/UI4050/2011 (Portugal), by MICINN (MAT 2009-14195-C03-03, IT2009-0089, ACI2009-0890, MAT2010-15310 and MAT2010-15982), the JCyL (VA034A09, VA030A08 and VA049A11-2) and CIBER-BBN. E.C. (Spain). Raul Machado was the receiver of a fellowship from Fundação para a Ciência e Tecnologia (SFRH/BD/36754/2007), co-funding by FSE through QREN/POPH (Portugal). Tony Collins is thankful to the Fundação para a Ciência e Tecnologia for its support through Programa Ciência 2008. | por |
dc.language.iso | eng | por |
dc.publisher | SpringerOpen | por |
dc.relation | info:eu-repo/grantAgreement/EC/FP7/246176/EU | por |
dc.relation | info:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F36754%2F2007/PT | por |
dc.rights | openAccess | por |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | por |
dc.subject | Silk-elastin-like polymers | por |
dc.subject | Recombinant protein expression | por |
dc.subject | Auto induction | por |
dc.subject | Acid-based cell lysis | por |
dc.subject | Ammonium sulphate purification | por |
dc.subject | Non-chromatographic purification | por |
dc.title | High level expression and facile purification of recombinant silk-elastin-like polymers in auto induction shake flask cultures | por |
dc.type | article | por |
dc.peerreviewed | yes | por |
dc.relation.publisherversion | https://amb-express.springeropen.com/articles/10.1186/2191-0855-3-11 | por |
oaire.citationStartPage | 11 | por |
oaire.citationEndPage | 15 | por |
oaire.citationIssue | 1 | por |
oaire.citationTitle | AMB Express | por |
oaire.citationVolume | 3 | por |
dc.identifier.eissn | 2191-0855 | por |
dc.identifier.doi | 10.1186/2191-0855-3-11 | por |
dc.subject.fos | Ciências Naturais::Ciências Biológicas | por |
dc.description.publicationversion | info:eu-repo/semantics/publishedVersion | por |
dc.subject.wos | Science & Technology | por |
sdum.journal | Amb Express | por |
Aparece nas coleções: | DBio - Artigos/Papers |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
Machado et al, AMB Express, 2013, Final Published Paper.pdf | 2,95 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons