Phosphorylated proteins and CE

[Scott Bean]

Has anyone done any analysis of phosphorylated proteins using capillary 
electrophoresis or know of any references to papers that have separated 
phosphorylated proteins using CE?  I'm looking for a method to look at the 
microhetergeneity (sp?) that might be caused by phosphorylation.  Can you 
separate "phosphoforms"?  

Also, has any done or know of the same thing except done with reversed-phase 
HLPLC?

Thanks.


Scott Bean