... amino acids include isoleucine, leucine, lysine, methi- onine, phenylalanine, threonine, tryptophan, and valine. The amino acid cystine ... tyrosine can replace part of the requirement for phenylalanine. Histidine is an essential amino acid for infants, ...

... et al.. .2.Ql.5.). Melphalan Melphalan (L-phenylalanine mustard) was, with chlorambucil, one of the first ... its synthesis in 1953 was that the L-phenylalanine part of the melphalan molecule would serve as ...

... obtained that the unnatural forms of tryptophane and phenylalanine are not readily utilized by man whereas d- ... reported on bloassays with Lacto- bacillus arabinosus for phenylalanine, valine, and isoleucine. The latter has been shown ...

... been obtained.59 60 On heating glycine or phenylalanine in aqueous Na2C03, l,4-thiazan-4-acetic ... have been obtained with alanine, valine, isoleucine, and phenylalanine.17 Disubstituted derivatives have been obtained with tryptophane, ...

... potentially toxic blood levels of the amino acid phenylalanine. The goals of therapy are to provide adequate intakes of energy and nutrients but only enough phenylalanine to maintain normal growth and development. Meeting these ...

... of the enzyme that converts the amino acid phenylalanine to tyrosine. Patients with phenylketonuria accumulate phenylalanine and other metabolites that, at high levels, are ...

... benzene, an indol, or an imidazol group. 1. Phenylalanine (a-amino-0-phenylpropionic acid): C6H6CH2CHNH2COOH, or H ... the phenol and cresol from the tyrosine and phenylalanine. There is evidence that other more or less ...

... of these, glycocoll, alanine, valine, leucine and isoleucine, phenylalanine, tyrosine, serine, cystine, pro- line, oxyproline, aspartic acid, ... ch2-cofoHl ch2-c6h6 nh2 hjhn-ch COOH Phenylalanine ch2-c6h5 =ch3 ch-co-nh-ch2-co- ...

... 5):264-6 STANDARDS Revision of the Ontario phenylalanine equivalency system and development of a low protein ... 6):10-1 STANDARDS Revision of the Ontario phenylalanine equivalency system and development of a low protein ...

... 7: 26-7 S 2 66 Tumor response to phenylalanine-tyrosine-llmited diets. A.B.Lorincz and others. ... 53: 439-49 N 68 Low-protein,low-phenylalanine cakes: dietary treatment of children with phenylketonuria. P. ...