Table 1.

LC-MS/MS identification of the peptide spots in cucurbitacin B-treated cells

Spot No.	NCBInr Entry	MW/pI	Protein identified	Expression
CuB1	gi/825671	28/4.41	Nucleophosmin/B23	Down-regulated
CuB2	gi/31542947	61/5.59	Chaperonin	Up-regulated
CuB3	gi/20070125	57/4.61	Prolyl 4-hydroxylase	Up-regulated
CuB4	gi/16507237	72/4.92	Heat shock 70kDa	Up-regulated

Protein identification from 2-D gel.