The major progesterone-modulated proteins secreted into the sheep uterus are members of the serpin superfamily of serine protease inhibitors.

@article{Ing1989TheMP,
  title={The major progesterone-modulated proteins secreted into the sheep uterus are members of the serpin superfamily of serine protease inhibitors.},
  author={Nancy H. Ing and R Michael Roberts},
  journal={The Journal of biological chemistry},
  year={1989},
  volume={264 6},
  pages={3372-9}
}
The uterine milk proteins (UTMP) are a pair of structurally related basic glycoproteins that when newly synthesized carry phosphorylated mannosyl residues on their carbohydrate chains. They are the major proteins secreted by ovine endometrium under the influence of progesterone. RNA from a late pregnant ewe endometrium was isolated for use in in vitro translation assays and for constructing cDNA libraries. Translation experiments, initially with total cellular RNA and subsequently with RNA… CONTINUE READING