Thank you two for the reply
i made the example,not my experiment result
so that example maybe strange
i was thinking a method:
1.use the GeneCode of MapMan system(Ath_AGI_TAIR6)
2.export it to a .txt file(how to do that?)
3.mapping the protein of the second column to the AGI number of the exported .txt file
4.replace the potein name with my EST name of the first column
step3 and 4 could be done by perl script
i dont know how to finish step 2
could you two give some advice again?
sorry for disturbing again
sorry for i cannot understand what usadel told me