Three consecutive prolines at positions 35 (Pro-Pro-Pro) and an additional proline at position 8 create local conformational rigidity through the unique angle constraints of pyrrolidine-containing residues
35 reported that the plasma concentration of citrulline (which is exclusively synthesized from glutamine and proline by enterocytes in most mammals including humans and pigs) was a reliable marker for the mass and metabolic activity of the small bowel in short bowel patients
Pennacchietti S, Michieli P, Galluzzo M, Mazzone M, Giordano S, Comoglio PM
We are in the midst of planning a reconstruction of that website because we have added so many different programs and protocols in the past 6 months that our website doesn't necessarily reflect yet
Dakin CL, Gunn I, Small CJ, Edwards CM, Hay DL, Smith DM, et al