Table 1. Secondary structure statistics of YhdE in both open and closed states.

Secondary Structure Identifier	Residue Range	Secondary Structure Identifier	Residue Range
Loop-1	1	Strand-5(β5)	112~124
Strand-1(β1)	2~4	Loop-9	125~128
Loop-2	5~8	Helix-4(α4)	129~138
Helix-1(α1)	9~18	Loop-10	139
Loop-3	19~21	Helix-5(α5)	140~143
Strand-2(β2)	22~24	Loop-11	144~152
Loop-4	25~38	Helix-6(α6)	153~157
Helix-2(α2)	39~57	Loop-12	158
Loop-5	58~63	Strand-6(β6)	159~162
Strand-3(β3)	64~72	Loop-13	163~164
Loop-6	73~83	Helix-7(α7)	165~169
Helix-3(α3)	84~94	Loop-14	170~172
Loop-7	95~97	Helix-8(α8)	173~188
Strand-4(β4)	98~109	Loop-15	189~190
Loop-8	110~111

Prefix “β” indicates β-strand and “α” indicates α-helix.