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Marine Natural Products:
"
Sanchez, Laura Margaret
Linington, Roger G
Document Type
:
AL
Record Number
:
908301
Doc. No
:
LA18g2n1xw
Title & Author
:
A mussel-derived one component adhesive coacervate. [Article]\ Wei, Wei; Tan, Yerpeng; Martinez Rodriguez, Nadine R; Yu, Jing; Israelachvili, Jacob N; Waite, J Herbert
Date
:
2014
Title of Periodical
:
UC Santa Barbara
Abstract
:
Marine organisms process and deliver many of their underwater coatings and adhesives as complex fluids. In marine mussels one such fluid, secreted during the formation of adhesive plaques, consists of a concentrated colloidal suspension of a mussel foot protein (mfp) known as Mfp-3S. The results of this study suggest that Mfp-3S becomes a complex fluid by a liquid-liquid phase separation from equilibrium solution at a pH and ionic strength reminiscent of the conditions created by the mussel foot during plaque formation. The pH dependence of phase separation and its sensitivity indicate that inter-/intra-molecular electrostatic interactions are partially responsible for driving the phase separation. Hydrophobic interactions between the non- polar Mfp-3S proteins provide another important driving force for coacervation. As complex coacervation typically results from charge-charge interactions between polyanions and polycations, Mfp-3S is thus unique in being the only known protein that coacervates with itself. The Mfp-3S coacervate was shown to have an effective interfacial energy of ⩽1mJm(-2), which explains its tendency to spread over or engulf most surfaces. Of particular interest to biomedical applications is the extremely high adsorption capacity of coacervated Mfp-3S on hydroxyapatite.
https://lib.clisel.com/site/catalogue/903353
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2wk446nr_9630.pdf
2wk446nr.pdf
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