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Solubility Behavior of Enzymes After Addition of Polyethylene Glycol to Erythrocyte Hemolysates
Author(s) -
Delgado C.,
Rubio A.,
Luque J.,
Tejedor MC
Publication year - 1988
Publication title -
biotechnology and applied biochemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.468
H-Index - 70
eISSN - 1470-8744
pISSN - 0885-4513
DOI - 10.1111/j.1470-8744.1988.tb00016.x
Subject(s) - solubility , polyethylene glycol , polymer , chemistry , polyethylene , precipitation , enzyme , chromatography , biochemistry , organic chemistry , meteorology , physics
The addition of polyethylene glycol to a hemolysate of rat erythrocytes reduces the solubility of phosphofructokinase and glucose‐6‐phosphate and 6‐phosphogluconate dehydrogenases in an exponential manner with respect to polymer concentration. Analyses of the solubility curves (log solubility versus polymer concentration) obtained at different pH values suggest that the solubility can be related to both the aggregation state and the intrinsic solubility of the proteins promoted by solution conditions. These findings suggest the possibility of using polyethylene glycol in a rational way for the fractional precipitation of a mixture.