carrier mediation by this lysosomal transport route demonstrates a high specificity for cysteine as indicated by the inability of the following amino acids to significantly inhibit at 5 mm the lysosomal uptake of 0.035 mm [ 35s ] l-cysteine : ala , ser , pro , val , gly , homocysteine , d- or l-penicillamine , arg , asp , or leu .
C0002520
amino
C0017890
gly