TABLE 1.

Amino acids that form structurally consistent core regions^a

Complex	Positions
	PVSP17B	PVSS12B	PVSS10E	PVSS7A
VHH, all ordered	1–124	1–123	1–124	1–125
VHH coreb	1–12	1–12	6–21	2–96
	15–31	17–31	25–27
	34–97	34–97	39–52
			57–70
			72–97
	112–120	112–120		113–122
VP1, all ordered	57–213	57–213	71–212	71–213
	232–279	232–279	232–279	232–279
VP1 core	72–94	72–94	72–94	73–93
	107–155	107–155	107–155	107–157
	172–174	172–174	172–174
	177–180	177–180	177–180
	183–209	183–209	183–209	183–213
	240–267	240–267	240–267	240–267
	272–279	272–279	272–279
VP2, all ordered	1–43	1–43	1–42	10–43
	53–159	53–159	55–159	53–159
	174–269	174–269	175–268	175–268
VP2 core	30–43	30–43	30–42	30–43
	53–100	53–100	55–100	53–132
	102–133	102–133	102–132
	143–159	143–159	144–159	143–159
	175–238	175–238	175–238	195–239
	250–259	250–259	250–259	247–260
VP3, all ordered	1–231	1–231	1–230	1–175
				185–230
VP3 core	1–12c	1–12c	1–12c	1–12c
	13–43c	13–43c	13–43c	13–43c
	44–70	44–70	44–70	44–71
	83–87	83–87	83–87
	95–121	95–121	95–121
	126–133	126–133	130–133	82–135
	142–177	142–177	142–172	143–147
	190–201	190–201	192–193	155–156
	206–225	206–225	206–225	188–226

^aResidues that were restrained to agree with main-chain coordinates from the structural homolog.

^bThe amino acid residues correspond to the sequence of the antipoliovirus VHH.

^cN-terminal residues of VP3 are piecewise rigid bodies.