Table 2. Kinetic properties of B⁰AT1/APN co-expressing oocytes.

X. laevis oocytes where injected with the transporter and auxiliary protein indicated. The Na⁺-induced currents were recorded as outlined in Figure 4. Each fitted data point represents the mean±S.D. (n=6–8, e=3).

Transporter	Substrate	Auxiliary protein	Imax (nA±S.D.)	Apparent Km (mM±S.D.)
B0AT1	Leucine	Collectrin	523±57	1.35±0.17
	APN		17.4±1.5	0.63±0.07
B0AT1	Glutamine	Collectrin	720±111	2.56±0.54
	APN		27±5.6	1.17±0.18
B0AT1	Phenylalanine	Collectrin	577±69	8.66±1.83
	APN		22±4	4.00±0.43