Table 2.

Population statistics for each secondary structure element

Structure	Residues	H	S	T	C
RNase A
Helix	4–11	58	25	12	6
Helix	25–32	54	23	15	8
*Helix	51–58	23	42	22	13
Strand	39–41	5	74	9	12
Strand	43–47	12	66	13	9
Strand	61–65	26	43	21	11
Strand	72–75	30	37	24	9
Strand	77–87	20	43	25	13
Strand	95–11	17	54	20	10
Strand	114–117	1	87	4	8
Turn	12–12	47	35	12	7
Turn	15–16	44	28	16	13
Turn	23–24	48	26	11	15
Turn	33–33	29	39	15	17
Turn	35–38	18	46	24	13
Turn	59–59	16	60	11	13
Turn	66–67	29	31	23	18
Turn	88–89	13	34	12	41
Hemerythrin
*Helix	19–37	27	44	16	13
Helix	41–64	43	31	12	13
Helix	70–85	54	30	9	7
*Helix	91–103	14	54	22	10
Strand	2–5	0	93	1	6
Strand	9–11	10	71	11	8
Turn	12–14	16	50	24	9
Turn	65–65	72	15	4	9
Turn	68–69	67	8	8	16
Turn	106–111	12	42	26	20
Lysozyme
*Helix	3–10	21	41	26	11
Helix	39–49	65	18	11	6
Helix	60–79	49	24	15	12
*Helix	82–90	15	61	15	10
*Helix	93–105	28	44	18	9
Helix	115–123	51	26	14	9
Helix	126–134	53	26	13	8
*Helix	137–141	21	58	11	10
*Helix	143–154	10	63	17	11
Strand	16–20	24	49	20	8
Strand	24–27	6	58	11	26
Strand	57–59	23	51	7	19
Turn	11–11	17	29	27	26
Turn	21–22	19	30	23	28
Turn	55–56	10	33	12	46
Turn	80–80	28	39	24	9

Structure	Residues	H	S	T	C
Turn	106–106	31	29	26	14
Turn	108–113	13	22	17	48
Turn	155–155	17	36	19	27
Turn	158–163	32	25	30	13
Plastocyanin
Strand	2–5	12	43	19	26
Strand	18–22	2	73	13	13
Strand	25–31	9	70	12	9
Strand	36–42	3	73	14	10
Strand	46–47	3	69	13	15
Strand	56–58	26	44	18	11
*Strand	61–63	38	35	14	13
*Strand	68–74	40	37	14	9
Strand	79–84	7	74	10	9
Strand	93–98	3	55	14	28
Turn	8–9	16	23	24	37
Turn	23–24	5	19	29	47
Turn	43–44	2	62	23	14
Turn	48–49	6	39	16	39
Turn	52–55	21	47	22	10
Turn	59–60	39	21	30	10
Turn	66–67	35	18	17	29
Turn	85–90	16	27	38	19
Staphnase
Helix	55–68	35	33	16	15
Helix	99–106	50	22	17	12
Helix	122–134	74	16	7	4
Strand	8–14	8	73	11	9
Strand	22–27	10	61	20	10
Strand	30–36	5	69	16	10
Strand	39–43	1	80	12	7
Strand	71–77	22	63	10	6
Strand	97–94	24	36	18	23
Strand	109–112	16	48	25	11
Turn	20–21	6	42	12	40
Turn	28–29	4	37	18	41
Turn	37–38	4	68	24	5
Turn	47–48	5	59	23	14
Turn	53–54	7	60	13	21
Turn	84–85	32	25	26	17
Turn	95–96	24	20	15	41
Turn	120–121	59	19	14	7
Turn	135–135	59	30	7	4
Turn	138–140	36	42	13	9
C12
*Helix	32–42	15	00	18	8
Strand	46–52	0	86	7	7

Structure	Residues	H	S	T	C
Strand	55–58	8	71	14	7
Strand	60–62	8	71	12	8
Strand	65–71	18	58	17	8
Strand	78–82	0	45	21	34
Turn	25–29	14	47	18	21
Turn	44–45	1	69	21	9
Turn	53–54	3	53	11	33
Turn	63–64	8	67	12	13
Turn	72–73	20	50	20	10
GB1
Helix	23–36	55	24	13	8
Strand	2–7	4	75	10	11
Strand	12–20	22	43	17	18
Strand	42–45	22	49	14	15
Strand	51–55	4	69	15	12
Turn	10–11	17	34	26	23
Turn	37–37	26	19	16	39
Turn	47–49	22	44	22	12
IFABP
Helix	14–21	69	13	12	6
*Helix	25–32	22	40	20	17
Strand	5–8	6	71	10	13
*Strand	10–12	49	33	10	8
Strand	36–42	15	59	17	9
Strand	46–53	16	55	20	10
Strand	56–63	7	65	17	12
*Strand	66–72	45	23	19	12
Strand	76–84	19	43	13	24
Strand	88–95	32	34	17	17
Strand	100–108	13	58	18	11
Strand	112–119	22	52	17	10
Strand	122–130	30	39	19	13
Turn	33–34	19	46	21	14
Turn	54–55	15	45	26	14
Turn	64–65	9	34	19	39
Turn	86–87	28	24	11	37
Turn	96–98	16	44	13	27
Turn	110–111	17	26	17	40
Turn	120–121	25	24	17	34
Myoglobin
*Helix	5–20	27	43	18	12
*Helix	22–36	12	47	21	20
Helix	52–57	78	12	6	4
Helix	59–77	36	31	17	16
*Helix	92–98	19	53	18	11
*Helix	103–111	17	55	18	9
*Helix	113–119	4	75	11	11

Structure	Residues	H	S	T	C
Helix	127–149	61	19	11	8
*Strand	121–124	31	15	15	39
Turn	38–43	46	32	16	7
Turn	45–49	60	25	7	8
Turn	78–80	40	21	15	24
Turn	99–99	1	92	1	6
Turn	112–112	6	77	10	7
Turn	125–126	58	11	15	15
Rnase H
Helix	44–58	40	31	18	12
*Helix	72–78	31	39	14	16
Helix	101–112	53	22	13	12
Helix	128–142	46	31	14	10
Strand	4–13	3	55	19	23
Strand	17–28	13	28	19	39
Strand	31–39	26	39	15	19
Strand	41–43	21	54	13	12
Strand	61–69	19	60	13	7
Strand	96–98	1	83	6	10
Strand	114–122	19	58	13	10
Turn	29–30	31	26	12	31
Turn	82–90	34	33	18	15
Turn	93–94	13	58	17	12
Turn	99–100	8	74	7	11
Turn	113–113	25	44	13	17
Turn	123–124	12	27	18	43
Turn	149–150	22	17	15	46
Ubiquitin
*Helix	23–32	27	43	20	9
Strand	2–7	12	62	15	11
Strand	11–18	2	80	9	8
Strand	41–45	21	54	17	9
*Strand	48–51	44	26	19	11
Strand	61–62	34	34	24	8
Strand	65–74	18	50	21	11
Turn	8–9	12	33	32	24
Turn	19–20	2	79	8	10
Turn	33–34	15	39	26	20
Turn	38–40	10	61	18	11
Turn	46–47	35	25	15	25
Turn	52–53	27	16	13	44
Turn	56–59	22	46	17	14
Turn	63–64	30	45	18	8

Residue boundaries in each element of secondary structure element and percentage of the ensemble found in helix (H), strand (S), turn (T) and coil (C). 

^*Helix or strand segments in which native bias is not the largest.