5.4.99.5 7.5 9.5 enzyme form CM2 3551 5.4.99.5 7.5 - in presence of Trp 3554 5.4.99.5 8 - in absence of Trp 3554 5.4.99.5 6.9 - - 3556 5.4.99.5 6 10 enzyme form CM2 3564 5.4.99.5 7.8 - enzyme form CM1 3564 5.4.99.5 5.4 - catalytic maximum in presence of tyrosine 651936 5.4.99.5 7.1 - catalytic maximum in presence of tryptophan 651936 5.4.99.5 7.5 - - 662365, 672183, 674312 5.4.99.5 6.5 - assay at 672622