Biotin transport via diffusion (extracellular to periplasm)
btn_e ⇌ btn_p
(-1000.0, 1000.0)
0.0
locus_1000 or locus_4006 or locus_4404 or locus_224
locus_1000
(OmpC)
locus_4006
(OmpN)
locus_4404
(PhoE)
locus_224
(OmpF)