Abstract:Two-dimensional electrophoresis using Phos-tag affinity electrophoresis enabled us to sensitively detect and separate the phosphorylated forms of protein. When we used 2-DE with isoelectric focusing using IPG gel strip in the first dimension and Phos-tag affinity electrophoresis in the second dimension, the nuclear fraction contained more than 20 spots of endogenous heterogeneous nuclear ribonucleoprotein K (hnRNP K) on the 2-DE map. Mass spectrometric analysis indicated that these multiple forms of hnRNP K we… Show more
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