Sample: 293 cells conditioned by E4 – Raw Excalibur spectra files represented by files MJ_1_9.raw,..MJ_1_16.raw – Proteome Discovere 1.2 SEQUEST search files represented by MJ_1_9.msf,.., MJ_1_16.msf Control: 293 cells – Raw Excalibur spectra files represented by files SN_2_9.raw,..SN_1_18.raw – Proteome Discovere 1.2 SEQUEST search files represented by SN_2_9.msf,.., SN_2_18.msf SEQUEST search was made on human.fasta database.