3GMP transport via diffusion (extracellular to periplasm)
3gmp_e ⇌ 3gmp_p
(-999999.0, 999999.0)
0.0
b2215 or b0241 or b0929 or b1377
b2215
(ompC)
b0241
(phoE)
b0929
(ompF)
b1377
(ompN)