NDLI: COVOL: an interactive program for evaluating second virial coefficients from the triaxial shape or dimensions of rigid macromolecules.

Content Provider	PubMed Central
Author	Harding, S. E. Horton, J. C. Jones, S. Thornton, J. M. Winzor, D. J.
Abstract	An interactive program is described for calculating the second virial coefficient contribution to the thermodynamic nonideality of solutions of rigid macromolecules based on their triaxial dimensions. The FORTRAN-77 program, available in precompiled form for the PC, is based on theory for the covolume of triaxial ellipsoid particles [Rallison, J. M., and S.E Harding. (1985). J. Colloid Interface Sci. 103:284-289]. This covolume has the potential to provide a magnitude for the second virial coefficient of macromolecules bearing no net charge. Allowance for a charge-charge contribution is made via an expression based on Debye-Hückel theory and uniform distribution of the net charge over the surface of a sphere with dimensions governed by the Stokes radius of the macromolecule. Ovalbumin, ribonuclease A, and hemoglobin are used as model systems to illustrate application of the COVOL routine.
Related Links	http://dx.doi.org/10.1016/s0006-3495(99)77398-4
Ending Page	2438
Page Count	7
Starting Page	2432
File Format	PDF
ISSN	00063495
e-ISSN	15420086
Journal	Biophysical Journal
Issue Number	5
Volume Number	76
Language	English
Publisher Date	1999-05-01
Access Restriction	Open
Subject Keyword	Biophysics Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Biophysics

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COVOL: an interactive program for evaluating second virial coefficients from the triaxial shape or dimensions of rigid macromolecules.