85.
[1]. Dunn MF, et al. The tryptophan synthase bienzyme complex transfers indole between the alpha- and beta-sites via a 5-30 A long tunnel. Biochemistry. 1990;9(37):8598-807.
H30-H315-H319-H335
P1-P4-P70-P71-P80-P30+P35-P304+P340-P330-P3+P34-P405-P501