Efficacy of methionine peptides as determined by chick bioassay.
Chick growth assays were used to evaluate the efficacy of poly-L-methionine and DL/LD methionylmethionine ( a 50:50 mixture of D-Met-L-Met and L-Met-D-Met). The polypeptide possessed no bioefficacy whatever, probably due to its extreme insolubility. The dipeptide of methionine exhibited growth-promoting ability equal to that of DL-methionine itself.
D000818:Animals; D002645:Chickens / Q000254:growth & development / Q000378:metabolism*; D004151:Dipeptides / Q000627:therapeutic use*; D005241:Feathers; D008297:Male; D008715:Methionine / Q000172:deficiency*; D009751:Nutritional Requirements; D009753:Nutritive Value; D010455:Peptides / Q000627:therapeutic use*; D012995:Solubility; D013329:Structure-Activity Relationship
D004151:Dipeptides; D010455:Peptides; C034757:polymethionine; C034758:methionylmethionine; D008715:Methionine