DC Field | Value | Language |
---|---|---|
dc.contributor.author | Hongbo Zeng | - |
dc.contributor.author | Hwang, DS | - |
dc.contributor.author | Jacob N Israelachv | - |
dc.contributor.author | J. Herbert Waite | - |
dc.date.accessioned | 2015-06-25T03:27:59Z | - |
dc.date.available | 2015-06-25T03:27:59Z | - |
dc.date.created | 2010-11-05 | - |
dc.date.issued | 2010-07-20 | - |
dc.identifier.issn | 0027-8424 | - |
dc.identifier.other | 2015-OAK-0000021767 | en_US |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/12756 | - |
dc.description.abstract | Metal-containing polymer networks are widespread in biology, particularly for load-bearing exoskeletal biomaterials. Mytilus byssal cuticle is an especially interesting case containing moderate levels of Fe3+ and cuticle protein-mussel foot protein-1 (mfp-1), which has a peculiar combination of high hardness and high extensibility. Mfp-1, containing 13 mol % of dopa (3, 4-dihydroxyphenylalanine) side-chains, is highly positively charged polyelectrolyte (pI similar to 10) and didn't show any cohesive tendencies in previous surface forces apparatus (SFA) studies. Here, we show that Fe3+ ions can mediate unusually strong interactions between the positively charged proteins. Using an SFA, Fe3+ was observed to impart robust bridging (W-ad approximate to 4.3 mJ/m(2)) between two noninteracting mfp-1 films in aqueous buffer approaching the ionic strength of seawater. The Fe3+ bridging between the mfp-1-coated surfaces is fully reversible in water, increasing with contact time and iron concentration up to 10 mu M; at 100 mu M, Fe3+ bridging adhesion is abolished. Bridging is apparently due to the formation of multivalent dopa-iron complexes. Similar Fe-mediated bridging (W-ad approximate to 5.7 mJ/m(2)) by a smaller recombinant dopa-containing analogue indicates that bridging is largely independent of molecular weight and posttranslational modifications other than dopa. The results suggest that dopa-metal interactions may provide an energetic new paradigm for engineering strong, self-healing interactions between polymers under water. | - |
dc.description.statementofresponsibility | open | en_US |
dc.language | English | - |
dc.publisher | the National Academy of Sciences | - |
dc.relation.isPartOf | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | - |
dc.rights | BY_NC_ND | en_US |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/2.0/kr | en_US |
dc.title | Strong Reversible Fe3+-mediated Bridging between Dopa-Containing Protein Films in Water | - |
dc.type | Article | - |
dc.contributor.college | 해양대학원 | en_US |
dc.identifier.doi | 10.1073/PNAS.1007416107 | - |
dc.author.google | Zeng, HB | en_US |
dc.author.google | Hwang, DS | en_US |
dc.author.google | Waite, JH | en_US |
dc.author.google | Israelachvili, JN | en_US |
dc.relation.volume | 107 | en_US |
dc.relation.issue | 29 | en_US |
dc.relation.startpage | 12850 | en_US |
dc.relation.lastpage | 12853 | en_US |
dc.contributor.id | 10167197 | en_US |
dc.relation.journal | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | en_US |
dc.relation.index | SCI급, SCOPUS 등재논문 | en_US |
dc.relation.sci | SCI | en_US |
dc.collections.name | Journal Papers | en_US |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, v.107, no.29, pp.12850 - 12853 | - |
dc.identifier.wosid | 000280144500028 | - |
dc.date.tcdate | 2019-01-01 | - |
dc.citation.endPage | 12853 | - |
dc.citation.number | 29 | - |
dc.citation.startPage | 12850 | - |
dc.citation.title | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | - |
dc.citation.volume | 107 | - |
dc.contributor.affiliatedAuthor | Hwang, DS | - |
dc.identifier.scopusid | 2-s2.0-77955627114 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.wostc | 203 | - |
dc.description.scptc | 201 | * |
dc.date.scptcdate | 2018-10-274 | * |
dc.type.docType | Article | - |
dc.subject.keywordPlus | MYTILUS-EDULIS | - |
dc.subject.keywordPlus | ADHESIVE PROTEIN | - |
dc.subject.keywordPlus | COATINGS | - |
dc.subject.keywordPlus | SURFACES | - |
dc.subject.keywordPlus | CUTICLE | - |
dc.subject.keywordPlus | FORCES | - |
dc.subject.keywordAuthor | byssus | - |
dc.subject.keywordAuthor | metal coordination | - |
dc.subject.keywordAuthor | tris-catecholato-iron (III) complex | - |
dc.relation.journalWebOfScienceCategory | Multidisciplinary Sciences | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
library@postech.ac.kr Tel: 054-279-2548
Copyrights © by 2017 Pohang University of Science ad Technology All right reserved.