isoprotein

From iso- +‎ protein.

isoprotein (plural isoproteins)

1. (biochemistry) Any of a family of closely-related proteins that have similar structural and functional properties.
   • 1991, George Steiner, Primary Hyperlipoproteinemias, page 47:

     The different isoproteins have been correlated with changes in plasma lipoprotein levels.

• inotropies, positioner, reposition, tiospirone