load 2por.pdb select side hide select hetero hide select 73-113, 206-222 hide rotate x 90 translate y 5 select backbone bonds 2 atoms 0 color orange select 1-15, 59-72, 148-170, 228-253, 290-301 color red sel */* exc 73-113, 206-222/phe, tyr, trp, met, leu, ile/* exc c, n, o show color cyan bonds 5 atoms 0 slab back -35 fading back -35