Abstract
AbstractOptical, hydrodynamic, and titration properties of polyribouridylic acid (poly U) were investigated in 0.2M Na+, pH 6. Above 15°C., poly U was shown to be a randomly coiled single chain, devoid of secondary structure. There is no shear rate dependence of viscosity; molecular weight is independent of ionic strength; there is virtually no conformationally dependent hypochromicity; no anomalous optical rotatory dispersion; and no anomalous titration behavior. The dependence of the sedimentation constant and intrinsic viscosity on molecular weight was determined. Poly U was shown to be the most highly expanded of all synthetic and naturally occurring randomly coiled polynucleotides.
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Dates
Type | When |
---|---|
Created | 20 years, 7 months ago (Dec. 29, 2004, 7:19 p.m.) |
Deposited | 1 year, 9 months ago (Nov. 12, 2023, 6:08 a.m.) |
Indexed | 1 year, 3 months ago (April 30, 2024, 11:16 a.m.) |
Issued | 61 years, 10 months ago (Oct. 1, 1963) |
Published | 61 years, 10 months ago (Oct. 1, 1963) |
Published Online | 21 years, 6 months ago (Feb. 1, 2004) |
Published Print | 61 years, 10 months ago (Oct. 1, 1963) |
@article{Richards_1963, title={Polynucleotides. VI. Molecular properties and conformation of polyribouridylic acid}, volume={1}, ISSN={1097-0282}, url={http://dx.doi.org/10.1002/bip.360010504}, DOI={10.1002/bip.360010504}, number={5}, journal={Biopolymers}, publisher={Wiley}, author={Richards, Edward G. and Flessel, C. Peter and Fresco, Jacques R.}, year={1963}, month=oct, pages={431–446} }