Choline uniport
chol_e ⇌ chol_c
(-1000.0, 1000.0)
0.0
Transport, extracellular
6582_AT1 or 6584_AT1 or 6582_AT2
6582_AT2
(SLC22A2)
6584_AT1
(SLC22A5)
6582_AT1
(SLC22A2)