however , based upon ( a ) inhibition studies with threonine ( where the k1 of threonine inhibition of glutamine transport was 7-fold the km of threonine transport ) , ( b ) inhibition analysis of glutamine transport with various amino acids and amino acid analogues , and ( c ) different patterns of transport between threonine and glutamine over the ph range of 5.5-7.5 , approximately one-third of glutamine transport can be attributed to a second na+-dependent amino acid transport system .
C0002520
amino acid
C0017797
glutamine