The influence of buffer composition and pH on the electrophoretic behavior of diadenosine polyphosphates with a phosphate chain ranging from two to five phosphate groups has been examined. The electrophoretic mobility in carbonate buffer increases according to the number of phosphates, whereas in berate buffer the mobility changes in an irregular way as a function of pH. This finding can be rationalized by a well-known interaction of berate with ribose rings, which modifies the charge and the hydrodynamic radius of each diadenosine polyphosphate in a different way. Our study shows that the best separation of diadenosine polyphosphates can be achieved at the highest pH values of the range examined both in berate and carbonate buffers.

Medda, R., Padiglia, A., Messana, I., Floris, G., Castagnola, M., Separation of diadenosine polyphosphates by capillary electrophoresis., <<ELECTROPHORESIS>>, 2000; (21(12)): 2412-2416 [http://hdl.handle.net/10807/25514]

Separation of diadenosine polyphosphates by capillary electrophoresis.

Castagnola, Massimo
2000

Abstract

The influence of buffer composition and pH on the electrophoretic behavior of diadenosine polyphosphates with a phosphate chain ranging from two to five phosphate groups has been examined. The electrophoretic mobility in carbonate buffer increases according to the number of phosphates, whereas in berate buffer the mobility changes in an irregular way as a function of pH. This finding can be rationalized by a well-known interaction of berate with ribose rings, which modifies the charge and the hydrodynamic radius of each diadenosine polyphosphate in a different way. Our study shows that the best separation of diadenosine polyphosphates can be achieved at the highest pH values of the range examined both in berate and carbonate buffers.
Inglese
Medda, R., Padiglia, A., Messana, I., Floris, G., Castagnola, M., Separation of diadenosine polyphosphates by capillary electrophoresis., <<ELECTROPHORESIS>>, 2000; (21(12)): 2412-2416 [http://hdl.handle.net/10807/25514]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10807/25514
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