1. Fragments from enzymic degradation of protein-polysaccharide light fraction (PPL) have been analysed. 2. The time-course of action of some proteolytic enzymes and of hyaluronidase on PPL has been followed by viscometric techniques. 3. It is suggested that papain acts to produce single polysaccharide chains, whereas other proteolytic enzymes tried give evidence of twin-chain residues. 4. The ...

2014 For a nematic in simple shear it has been shown that the asymptotic form of the apparent viscosity for large shearing force can be predicted. This prediction is obtained from two reasonable simplifying assumptions. It is shown here that the same form for the apparent viscosity is also valid for other viscometric flows, provided the appropriate measure of the shearing force is chosen. The r...

Rheological and electrical properties of polymeric nanoparticle solutions and their influence on the rheological and electrical properties of red blood cell (RBC) suspensions have been studied. Poly(acrylic acid) macromolecules of different architecture and molecular weight were used: (i) a new core-shell type star polymer whose interior forms hyperbranched polystyrene bearing arms of poly(acry...

Small angle x-ray scattering and viscometric analyses of the alpha-zeins of maize in solution indicated that the molecules were asymmetric. Structure predictions of consensus sequences for the two classes of alpha-zeins, Z19 and Z22, were in good agreement with the alpha-helical contents determined by circular dichroism. Dimensions determined by small angle x-ray scattering and viscometry indic...

Although trypsin, a-, /3-, and y-chymotrypsin, and their inactive precursors were obtained in crystalline form by Kunitz and Northrop (1) and by Kunitz (2) more than 10 years ago, detailed molecular-kinetic characterization of these substances is lacking. The present experiments have been undertaken as part of a comprehensive investigation of the proteolytic enzymes of the pancreas which will i...

2014 In a solvent mixture AB close to a critical (demixing) point Tc, there should exist an indirect interaction between two solute monomers (C1 C2), which is attractive and of long range (the range being the correlation length 03BE of the AB system). Close to the critical point, the interaction is of the Coulomb form (but reversed in sign). The competition between this attraction and conventio...

The paper presents the results of viscosity determinations on aqueous solutions of human serum albumin (HSA) at isoelectric point over a wide range of concentrations and at temperatures ranging from 5°C to 45°C. On the basis of a modified Arrhenius equation and Mooney's formula some hydrodynamic parameters were obtained. They are compared with those previously obtained for HSA in solutions at n...