《表1 Ba TDC的酶学特性》

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《宽泛底物谱色氨酸脱羧酶体外合成卤代色胺衍生物和血清素（英文）》

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After incubation with 0.1 mol/L Tris-HCl and0.4 mmol/L PLP for 10 min，fluoro-tryptamine（C10H11FN2，Figure 5A），with a calculated m/z of179.097 9[M+H]+，was found at an m/z of 179.108 9[M+H]+at a retention time（Rt）of 9.108 min.Chloro-tryptamine was found at an m/z of 195.066 3[M+H]+and a calculated m/z of 195.068 4[M+H]+（C10H11Cl N2，Figure 5B），at a Rt of 5.542 min.Bromo-tryptamine was found at an m/z of 239.021 5[M+H]+and a calculated m/z of 239.017 8[M+H]+（C10H11Br N2，Figure 4E），at a Rt of 13.737 min.HPLC and UPLC-TOFMS analyses showed that Ba TDC accepted F-L-tryptophan，Cl-L-tryptophan，and Br-L-tryptophan as substrates，and halogenation at C-4，C-5，C-6，and C-7 did not affect the catalytic reactions.A peak occurred at Rt of 2.786 min for hydroxytryptamine，which was found at m/z 177.102 2[M+H]+，and the calculated m/z was 177.102 2[M+H]+（C10H12N2O，Figure 5F）.