Biophysical Chemistry 2002-10-16

Lysozyme viscoelastic matrices in tetramethylurea/water media: a small angle X-ray scattering study.

Marcelo A da Silva, Rosângela Itri, Elizabeth P G Arêas

Index: Biophys. Chem. 99(2) , 169-79, (2002)

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Abstract

Semi-solid viscoelastic matrices produced out of lysozyme in organic/aqueous media [tetramethylurea (TMU)/water] were characterized by small angle X-ray scattering (SAXS). The scattering curves were modeled in their form and interference factors. Radii of gyration of scattering particles were found to undergo a dramatic increase from 14 A in water to approximately 44 A in the matrices. Average correlation distances d=155 A were consistently verified for the scattering particles in the matrices, irrespective of solvent composition (in the 0.6