2019 Impact factor 1.812
Soft Matter and Biological Physics


Eur. Phys. J. E 7, 45-48 (2002)
DOI: 10.1140/epje/i200101179

Transient clustering in a protein solution

R. Piazza and S. Iacopini

INFM, Dipartimento di Ingegneria Nucleare, Politecnico di Milano, 20133 Milano, Italy

roberto.piazza@polimi.it

(Received 19 October 2001 and Received in final form 13 December 2001)

Abstract
It is known that protein-protein interactions may lead, in some conditions, to the formation of structurally stable multimers. In this paper we point out that another possible effect of attractive interactions is the spontaneous formation of transient clusters. By carefully combining static and dynamic light scattering data from $\beta$-lactoglobulin (BLGA) solutions, we show that for this specific system aggregation effects rather fit the latter description. We suggest that other association processes in protein solutions, and perhaps in supercooled simple fluids, may parallel BLGA clustering.

PACS
87.15.Nn - Properties of solutions; aggregation and crystallization of macromolecules.
82.70.Dd - Colloids.


© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2002