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. 2023 Feb 5;24(4):3144. doi: 10.3390/ijms24043144

Table 10.

Kinetic parameters of nucleoside transporters of T. brucei brucei, T. congolense and T. vivax.

Transporter Substrate
ADE ADO GUA GUO HYP INO CTD TMD URD
TbP2/AT1 0.38 a; 0.30 c 0.59 a; 0.92 c NE 3,c >500 c NE 4,c NE 3,c NE 2,c NE 2,c
TbP1/NT2 NE 3,c 0.15 a; 0.26 b; 0.38 c 1.8 c NE 1,c 0.44 c NE 3,c 44 c 830 c
TbNT5 d 2 2.2 49.4
TbNT6 d 1.4 4.3
TbNT7 d 0.3 1.8
TbNT9 e 148 0.068 6.2 320 2.75 510 235
TbNT10 e 0.41 0.53
TbNT11 f 2.7; 8 266 651 141
TbNT8/H4 g 2.6 860 2.6 4.7 0.55 20 95
TcoAT1 786 0.42 0.80 61.2 0.55 1630 49.6 147
TvxNT3 2.43 1.41 1.37 1.75 0.086 >100 603 720

Values in bold represent Km values; all others are Ki values. ADE, adenine; ADO, adenosine; GUA, guanine; GUO, guanosine; HYP, hypoxanthine; INO, inosine; CTD, cytidine; TMD, thymidine; URD, uridine; NE, no effect at 1 1 mM, 2 500 μM, 3 250 μM, 4 100 μM. a Carter and Fairlamb [41]; b De Koning et al. [34]; c De Koning and Jarvis [44]; d Sanchez et al. [39]; e Al-Salabi et al. [40]); f Ortiz et al. [96]; g Burchmore et al. [70]. Data for T. congolense (Tco) and T. vivax (Tvx) transporters were from this study. NE, no effect at the stated concentration.