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. 2006 Apr;18(4):907–920. doi: 10.1105/tpc.105.038018

Table 4.

Substrate Specificity of STR1

Substrate Relative Activity (%)
Tryptamine 100.0
5-Hydroxytryptamine (serotonin) 9.9
5-Fluorotryptamine 9.5
6-Fluorotryptamine 6.6
7-Methyltryptamine 8.9
5,6-Dihydroxytryptamine 7.0
6-Methoxytryptamine 2.1
5-Methyltryptamine 0.0
5,7-Dihydroxytryptamine 0.0
N-Acetyl-5-hydroxytryptamine 0.0
Phenylalanine 0.0
Histamine 0.0
Dopamine 0.0
5-Methoxytryptamine 0.0
N-Methyltryptamine 0.0
N-ω-Methyltryptamine 0.0
2-Methyl-5-hydroxytryptamine 0.0