Table 2:

V_max and K_m values determined for DA transport in animal tissues and brain regions.

Tissue Type/Region	V_max (pmol/min/mg)	K_m (μM)	Reference
Rat
Striatal Synaptosomes (including NAc and CPu)	6 – 159	0.03 – 0.50	(Afonso-Oramas et al., 2009; Carvelli et al., 2002; Foster and Vaughan, 2011; Hong and Amara, 2010; Jones et al., 2017; Moritz et al., 2013; Morón et al., 2003; Richards and Zahniser, 2009; Vaughan et al., 1997; Zahniser et al., 1999)
VTA Slices	0.33 ± 0.03^a		(Mebel et al., 2012)
Striatum (in vivo)	0.7^a	10 – 12 (K_T)	(Sabeti et al., 2002; Zahniser et al., 1999)

Mouse
Striatal Synaptosomes	38 ± 7	0.06 ± 0.01	(Rao et al., 2013)
NAc Slices	1.0^a	0.2	(Lu et al., 2015)

Human
Striatal Synaptosomes		0.41	(Mash et al., 2002)

Drosophila
Channelrhodospin2 (ChR2) DA neurons	0.11 ± 0.02^a	1.3 ± 0.6	(Vickrey et al., 2013)

μM/s