Table 1.

Selected membrane partition (P) and permeability (Pm) coefficients for LRCs of particular importance to lignin biosynthesis or utilization

Membrane	Compound	$\log \mathrm{P}$	$\log \mathrm{P}\mathrm{m}\left({\text{cm}\hspace{0.17em}\text{s}}^{-1}\right)$
Z. mays	p-Coumaryl alcohol	1.4	-1.4
	Coniferyl alcohol	1.0	-1.5
	Sinapyl alcohol	0.7	-2.1
	Caffeyl alcohol	1.6	-1.6
	Tricin	4.4	-0.7
	Coniferin	0.5	-6.8
	p-Coumarate	0.1	-17.5
	Ferulate	-0.1	-15.3
P. putida	Phenol	2.2	1.1
	Guaiacol	1.3	1.2
	Syringol	1.3	1.0
	Vanillyl alcohol	0.4	-1.3
	Vanillin	0.4	-0.4
	Vanillate	-0.3	-10.2
	p-Coumarate	0.1	-9.8
	Ferulate	-0.1	-9.0
	G-$\beta$-O-4-G	1.4	-0.9
	G-$\beta$-1-G	0.7	-4.0
	G-$\beta$-$\beta$-G	2.1	0.8

P and Pm coefficients for all membranes and compounds tested are reported in SI Appendix, Tables S1–S3.