Table 2.

Identified XLs within the rod domain.

Segments (# XLs)	Residue 1	Residue 2	Cross-linker(s)	Type XL	Elongated model, Cα-Cα dist. (Å)	Compact model, Cα-Cα dist. (Å)
C1B–C1B (2)	K143	K223	DSG, DSS,*,**	inter	29	32
	K188	K188	DSG, DSS, DSPU, DSBU,*	inter	16	16
C1A–C1B (1)	K120	K168	DSS	intra	69	34
C1B–C2 (4)	K143	K294	DSS	inter	35	30
	K188	K334	DSBU	intra	169	23
	K223	K294	DSG, DSS, DSBU	intra	61	28
	K223	K313	DSG	intra	88	31
C2–C2 (1)	K294	K402	DSBU,*,**	inter	369	62
C1A–C2 (15)	K97	K120	DSS, DSBU	intra	33	33
	K97	K292	DSG	inter	39	25
	K97	K294	DSG, DSS, DSBU	inter	36	25
	K97	K313	DSS	inter	32	24
	K97	K402	DSBU	intra	404	85
	K104	K282	DSS,*,**	inter	43	33
	K104	K292	DSS	inter	30	21
	K104	K294	DSS	inter	27	19
	K104	K313	DSG, DSS	inter	16	19
	K120	K262	DSG,*,**	inter	28	39
	K120	K282	DSG, DSS, DSBU	inter	22	17
	K120	K292	DSS, DSBU	inter	13	14
	K120	K294	DSS, DSBU	inter	15	15
	K120	K313	DSS, DSBU	inter	31	36
	K129	K294	DSG, DSS	inter	16	28
(23 XLs)					(17 satisfied)	(21 satisfied)

Asterisks indicate same or nearby cross-linked positions as reported by Steinert’s group for DST in²³ (*) and⁹ (**). The last two columns indicate the distances between the corresponding residues in each of the models. The distances which are compatible with XL formation are in bold. The distances which exceed the cut-off value are in italics.