PID interacts with PBP1 and TCH3 in yeast. Yeast cells containing pACT-PBP1
or pACT-TCH3 and pAS2-1-PID (lanes 1 and 4), pAS2-1-PIDΔSN (lanes 2 and
5), or pAS2-1-PIDΔAN (lanes 3 and 6). A, Two in-frame deletions of PID
were used, one that deletes amino acids 69 to 82 and another that deletes
residues 82 to 283 (lane 6). B, α-Galactosidase assays using the
above-mentioned combinations.