Download e-book for iPad: Adhesive Interactions of Mussel Foot Proteins by Jing Yu

By Jing Yu

ISBN-10: 3319060309

ISBN-13: 9783319060309

ISBN-10: 3319060317

ISBN-13: 9783319060316

Water and moisture undermine robust adhesion to polar surfaces. Marine mussels, besides the fact that, in achieving sturdy underwater adhesion utilizing a set of proteins which are bizarre in having excessive degrees of three, 4-dihydroxyphenylalanine (Dopa). Mussel adhesion has encouraged quite a few stories on constructing the following iteration of rainy adhesives. This thesis offers contemporary growth in knowing the elemental floor and intermolecular interactions hired by means of mussels to accomplish robust and sturdy rainy adhesion. the outside forces gear (SFA) and diverse different options have been utilized to degree the interactions among mussel foot protein-3 fast (Mfp-3 fast) and the version substrate, mica, in addition to the interactions among a number of mussel adhesive proteins. the implications during this thesis express that Dopa performs a vital function in mussel adhesion and that mussels delicately keep an eye on the interfacial redox atmosphere to accomplish robust and sturdy Dopa mediated adhesion. The interaction among Dopa and hydrophobic interactions is usually obvious in mussel adhesion.

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Redox control in Mfp-3 must be considered in the context of plaque formation. A small volume (~10–20 μL) of fluid containing Mfp-3 variants is secreted into the distal depression (Fig. 5. The proteins are rapidly adsorbed onto the mica surface by Dopa-mediated H-bonds (Fig. 7a). Each Mfp-3 has ten Dopa residues. Given the small size of Mfp-3 (5–6 kDa) and its extended unstructured conformation, adsorption is rapid and irreversible [15, 27]. 5 Discussion 39 OH Mfp-6(ox) Mfp-6(red) S HS HO S− S S S S a S− HO O HO S Mfp-3 HO HS HO Mfp-6(ox) OH O HO O + HO S− S HO O d 1/2 O2 c HO OH HO OH HO OH Polysiloxane mica surface 1/2 O2 b HO OH b HO OH e HO OH HO OH Fig.

Both features are important to the binding of Dopa to the mica surface. The surprising matching between the distance of two hydroxyl groups of Dopa and the lattice structure of mica makes it possible for Dopa to form a bidentate hydrogen binding to the mica surface, giving rise to the strong adhesion force between different Mfps and the mica surface [7]. More details will be covered in Chap. 3. 16 2 Surface Interactions in Biological Systems (2) Hydrophobic Interaction The second important water-mediated interaction, the hydrophobic interaction, is related to the H-bonding network of water molecules and the resulting tetrahedral structure of water [1].

8) A similar equation can be derived for separating two dissimilar media 1 and 2 in medium 3: W132 = γ 13 + γ 23 − γ 12 . 2 Adhesion Energies and Adhesion Forces Although sometimes used interchangeably, we have to notice that the adhesion energy and the adhesion force are two different things. Strictly, the adhesion energy is an equilibrium term, and it should only depend on the initial and final states. To measure it accurately, the measurement has to be infinitely slow or, in other words, in a reversible process.

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Adhesive Interactions of Mussel Foot Proteins by Jing Yu

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