Yeast cDNA library

[Frank O. Fackelmayer]

Hi all,
I´m looking for a good cDNA library from yeast (s.cerevisiae) to use in
antibody screening. The goal is to find the yeast counterpart for a
known human gene. Sequence comparisons using the translated yeast genome
came up with different possible proteins, but their molecular weight
don´t fit at all (and the peptide antibody DOES react with a yeast
protein of the right size).
Any suggestions for a good library with an inducible prokaryotic
promoter? Any info about supplier and price highly appreciated.

Thanks a lot in advance,
Frank