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On the molecular weight of myosin
Biochimica et Biophysica Acta, 1958Abstract By the Archibald approach to sedmentation equilibrium method, we have found a molecular weight of 4.2·10 5 g for either, (I) myosin (A) or, (2) the principal, ( ca . 65% by weight), schlieren-visible component of 5-h extracted myosin B. This same value has also been estimated from the conventional sedimentation velocity-diffusion method ...
Pearl Appel +3 more
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Molecular weight and molecular weight distribution
1993Since the achievement of the physical properties characteristic of high polymers depends critically on molecular weight, it is most important to be able to define and measure this quantity. In this chapter definitions are taken up and basic concepts illustrated, largely by the example of step polymerization.
Paul J. Phillips, Richard H. Boyd
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Determination of Molecular Weights and Molecular Weight Distribution of Polyacrylamides
SPE Annual Technical Conference and Exhibition, 1984ABSTRACT A high-performance, size-exclusion chromatography procedure has been developed for determining molecular weights and molecular weight distributions of polyacrylamides. The procedure can be applied to dry or emulsion polyacrylamides. Virgin polymers and polymers passed through Berea sandstone cores can be analyzed. The analytical
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Molecular Weight and Molecular Weight Distribution of Kraft Lignins
MRS Proceedings, 1990ABSTRACTKraft lignins are the lignin degradation products from kraft pulping. They are complex, heterogeneous polymers with some polar character. The molecular weight of kraft lignins greatly affect the physical properties of black liquors, and are of primary importance in separation from black liquor and in evaluating potential uses.Several purified ...
Arthur L. Fricke +2 more
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Whale High-Molecular-Weight and Low-Molecular-Weight Kininogens
Thrombosis Research, 2000The expression of high-molecular-weight and low-molecular-weight kininogen mRNAs in the whale liver was examined by reverse transcription-polymerase chain reaction. The nucleotide sequences of the high-molecular-weight and low-molecular-weight kininogen cDNAs were analyzed and deduced to the amino acid sequences.
Umeko Semba +4 more
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Molecular Weights and Molecular-Weight Distributions
1977In synthesizing macromolecules in vitro and in vivo, monodisperse macromolecules (i.e., those in which every molecule has the same molecular weight) only occur under specific mechanistic conditions. The overwhelming majority of reactions proceed more or less randomly, and the resulting macromolecular substance shows a more or less broad molecular ...
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Determination of Molecular Weight and Molecular-Weight Distribution
1977Molecular-weight determination methods can be classed as absolute, equivalent, or relative. Absolute methods allow the molecular weight to be calculated directly from the measured quantities; a knowledge of the physical and chemical structure of the molecules is not required.
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The molecular weight of a-chymotrypsinogen
Biochimica et Biophysica Acta, 1957Abstract The molecular weight of crystalline a-chymotrypsinogen has been determined from amino acid analysis, light-scattering, and sedimentation-diffusion measurements. The values obtained by the use of these methods are, respectively, 25,100, 26,000 and 24,200.
Philip E. Wilcox +3 more
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Nature, 1962
IN a recent article Wright1 put forward the hypothesis that the molecular weights of the enzymes tabulated by Dixon and Webb2 fall near three series of numbers expressed by 2n × 12,000, 2n × 16,000 and 2n × 19,000, n taking integral values 0–4. This hypothesis was based entirely on the experimental values themselves, mainly by means of graphical ...
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IN a recent article Wright1 put forward the hypothesis that the molecular weights of the enzymes tabulated by Dixon and Webb2 fall near three series of numbers expressed by 2n × 12,000, 2n × 16,000 and 2n × 19,000, n taking integral values 0–4. This hypothesis was based entirely on the experimental values themselves, mainly by means of graphical ...
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