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dc.contributor.authorWright, Mayaen
dc.contributor.authorAprile, Francescoen
dc.contributor.authorBellaiche, Mathias MJen
dc.contributor.authorMichaels, Thomasen
dc.contributor.authorMüller, Thomasen
dc.contributor.authorArosio, Paoloen
dc.contributor.authorVendruscolo, Micheleen
dc.contributor.authorDobson, Christopheren
dc.contributor.authorKnowles, Tuomasen
dc.date.accessioned2018-09-27T14:09:23Z
dc.date.available2018-09-27T14:09:23Z
dc.date.issued2018-07en
dc.identifier.issn0006-2960
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/282775
dc.description.abstractMany molecular chaperones exist as oligomeric complexes in their functional states, yet the physical determinants underlying such self-assembly behavior, as well as the role of oligomerization in the activity of molecular chaperones in inhibiting protein aggregation, have proven to be difficult to define. Here, we demonstrate direct measurements under native conditions of the changes in the average oligomer populations of a chaperone system as a function of concentration and time and thus determine the thermodynamic and kinetic parameters governing the self-assembly process. We access this self-assembly behavior in real time under native-like conditions by monitoring the changes in the micrometer-scale diffusion of the different complexes in time and space using a microfluidic platform. Using this approach, we find that the oligomerization mechanism of the Hsp70 subdomain occurs in a cooperative manner and involves structural constraints that limit the size of the species formed beyond the limits imposed by mass balance. These results illustrate the ability of microfluidic methods to probe polydisperse protein self-assembly in real time in solution and to shed light on the nature and dynamics of oligomerization processes.
dc.description.sponsorshipThe research leading to these results has received funding from the European Research Council under the European Union’s Seventh Framework Programme (FP7/2007-2013) through the ERC grant PhysProt (agreement no 337969) (T.P.J.K., M.A.W., and T.C.T.M.). In addition, we are grateful for financial support from the Frances and Augustus Newman Foundation (T.P.J.K. and M.A.W.), the Marie Curie Fellowship scheme (P.A.), the Cambridge Commonwealth, European and International Trust (M.M.J.B.), the NIH-Oxford Cambridge Scholars Programme (M.M.J.B.), St John’s College Cambridge (T.C.T.M.), the Swiss National Science Foundation (T.C.T.M.), and the Biotechnology and Biological Sciences Research Council (T.M.). F. A. A. is supported by a Senior Research Fellowship award from the Alzheimer’s Society, UK (grant number 317, AS-SF-16-003). This work was in part supported by the Intramural Research Program of the National Institute of Diabetes and Digestive and Kidney Diseases at the National Institutes of Health (M.M.J.B.) and the Centre for Misfolding Diseases, Cambridge, UK.
dc.format.mediumPrint-Electronicen
dc.languageengen
dc.publisherAmerican Chemical Society (ACS)
dc.subjectHumansen
dc.subjectEquipment Designen
dc.subjectDiffusionen
dc.subjectKineticsen
dc.subjectThermodynamicsen
dc.subjectHSP70 Heat-Shock Proteinsen
dc.subjectProtein Multimerizationen
dc.subjectLab-On-A-Chip Devicesen
dc.subjectProtein Domainsen
dc.titleCooperative Assembly of Hsp70 Subdomain Clusters.en
dc.typeArticle
prism.endingPage3649
prism.issueIdentifier26en
prism.publicationDate2018en
prism.publicationNameBiochemistryen
prism.startingPage3641
prism.volume57en
dc.identifier.doi10.17863/CAM.30139
dcterms.dateAccepted2018-05-15en
rioxxterms.versionofrecord10.1021/acs.biochem.8b00151en
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2018-07en
dc.contributor.orcidAprile, Francesco [0000-0002-5040-4420]
dc.contributor.orcidMichaels, Thomas [0000-0001-6931-5041]
dc.contributor.orcidArosio, Paolo [0000-0002-2740-1205]
dc.contributor.orcidVendruscolo, Michele [0000-0002-3616-1610]
dc.contributor.orcidKnowles, Tuomas [0000-0002-7879-0140]
dc.identifier.eissn1520-4995
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idAlzheimer's Society (317 (AS-SF-16-003))
pubs.funder-project-idBBSRC (BB/J002119/1)
pubs.funder-project-idEuropean Research Council (337969)
cam.orpheus.successThu Jan 30 10:54:28 GMT 2020 - The item has an open VoR version.*
rioxxterms.freetoread.startdate2100-01-01


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