p19 , a group of 19,000 mol wt cytosolic proteins , with apparent isoelectric points of pi 5.9 , pi 5.7 , and pi 5.4 , respectively , was identified in three peptide hormone-producing cell types : att20 mouse pituitary tumor cells , rin-1122 rat insulinoma cells , and hamster insulinoma cells .
C1383501
cytosolic
C3537272
pi