Surface structure in the integration of cell activity

Peters, Rudolph

doi:10.1039/tf9302600797

Cited by 68 publications

(20 citation statements)

References 15 publications

(2 reference statements)

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“…[31] It is likely that immediate protonation of the methoxy groups causes the interface to take up a potential different from that of the bulk, similar to that noted by Peters. [32] In this case, the potential is negative [17] and will result in the hydronium ion being attracted towards the electronegative oxygen, increasing the effective concentration near the interface and lowering the pH compared to the bulk subphase.…”

Section: Kinetics Of Hydrolysis In Otms Monolayermentioning

confidence: 99%

Interfacial Behavior of a Reacting Alkoxysilane Monolayer System

Carino

Duran

2004

Macro Chemistry & Physics

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Summary: We report here the results on the investigations of the dynamic interfacial behavior of a trifunctional alkoxysilane, octadecyltrimethoxysilane (OTMS) as it is reacting at the air‐water interface. We have investigated both the Π‐A isotherms and A(t) isobars of OTMS at acidic subphases. An attempt to analyze the kinetics of the reaction in the monolayer was limited to the early stages of the reactions and only describes the kinetics of hydrolysis. We also confirmed by rheological measurements that this system does indeed form a network inefficiently and the resulting structure most likely consists of extensive linear segments as has been suggested in earlier reports. The general rheological characteristic indicates the product to have high molecular weight. The product also exhibited a 2D sol‐gel transition that has general features of a percolating network. However, the scaling behavior does not follow exactly that predicted; several reasons for this are discussed.A(t) isobars of OTMS at various subphase pHmagnified imageA(t) isobars of OTMS at various subphase pH

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Section: Kinetics Of Hydrolysis In Otms Monolayermentioning

confidence: 99%

Interfacial Behavior of a Reacting Alkoxysilane Monolayer System

Carino

Duran

2004

Macro Chemistry & Physics

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“…In 1930, Rudolph Peters postulated that such sustaining background might be constituted by an organised network of protein molecules, forming a three dimensional mosaic extending throughout the cell. The enzymes would form part of this structure, their activity being largely controlled by the mosaic [Peters, 1930].…”

Section: The Cytosquelettementioning

confidence: 99%

Recurring views on the structure and function of the cytoskeleton: A 300-Year Epic

Frixione

2000

Cell Motil. Cytoskeleton

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Some unnoticed or seldom remembered precedents of current views on biological motion and its structural bases are briefly outlined, followed by a concise recapitulation of how the present theory has been constructed in the last few decades. It is shown that the evolution of the concept of fibers as main constituents of living matter led to hypothesizing microscopic structures closely resembling microtubules in the 18th century. At the beginning of this period, fibers sliding over each other and driven by interposed moving elements were envisioned as the cause of muscle contraction. In the following century, an account of the mechanism of myofibril contraction visualized longitudinal displacements of myosin‐containing submicroscopic rodlets. The existence of fibrils in the protoplasm of non‐muscle cells, a subject of long debate in the second half of the 19th century, was virtually discarded as irrelevant or fallacious 100 years ago. The issue resurfaced in the early 1930s as a theoretical notion—the cytosquelette—nearly two decades before intracellular filamentous structures were first observed with electron microscopy. The role originally assumed for such fibrils as signal conductors is nowadays being reappraised, although under new interpretations with a much wider significance including modulation of gene expression, morphogenesis, and even consciousness. Since all of the above ancestral conceptions were eventually abandoned, the corresponding current views are, to a certain extent, recurrent. Cell Motil. Cytoskeleton 46:73–94, 2000 © 2000 Wiley‐Liss, Inc.

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“…Two types of cross-linking reagents have been commonly used: ( 1 ) bifunctional reagents possessing two identical functional groups, such as glutaraldehyde (26,78-84), bisdiazobenzidine-2,2'-disulfonic acid (6,19,20,75), 1,5-difluoro-2,4-dinitrobenzene (85,86), diphenyl-4,4'-dithiocyanate-2,2'-disulfonic acid (87), 4,4'-difluoro-3,3'-dinitrodiphenylsulfone (88), and phenol-2,4-disulfonyl chloride (89); and (2) bifunctional reagents possessing two different functional groups, or groups of differing reactivities, such as toluene-2-isocyanate-4-isothiocyanate (go), 3-rnethoxy-diphenylmethane-4,4'-diisocyanate (go), and trichloro-s-triazine (49, 50).…”

Section: Enzymes Immobilized By Intermolecular Cross-linkingmentioning

confidence: 99%