Analysis of interatomic Contacts of Structural Units in PDB entry:
3CMA

Contacts of Structural Units (CSU) are derived with the CSU software (Sobolev V., Sorokine A., Prilusky J., Abola E.E. and Edelman M. (1999) Automated analysis of interatomic contacts in proteins. Bioinformatics, 15, 327-332).
This page provides analyses of contacts formed by:

chains
helices
sheets
residues

For analysis of ligand-protein contacts, use:

LPC software

3D structure can be seen in additional window with STING software for 3CMA entry

There are 37 chains in PDB entry 3CMA (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	GLY 1	GLY 237
B	PRO 1	GLY 337
C	MET 1	ARG 246
D	PHE 10	VAL 174
E	PRO 1	PRO 172
F	PRO 1	ARG 119
G	ILE 12	ASP 73
H	LYS 4	LEU 174
I	GLY 66	GLU 135
J	ALA 4	TRP 145
K	MET 1	VAL 132
L	THR 1	GLN 150
M	ALA 1	GLY 194
N	ALA 1	LEU 186
O	SER 1	ARG 115
P	THR 1	ALA 143
Q	PRO 1	GLU 95
R	GLY 1	PRO 150
S	SER 1	ILE 81
T	SER 1	ALA 119
U	ARG 4	ARG 56
V	THR 1	ASP 65
W	MET 1	ARG 154
X	GLU 7	GLU 88
Y	THR 95	VAL 236
Z	SER 34	SER 106
1	THR 1	GLU 56
2	GLY 1	GLU 49
3	MET 1	GLU 92
0	U 10	G 627
0	A 629	U 2586
0	U 2589	G 2618
0	U 2620	U 2620
0	A 2622	A 2914
9	U 1	C 122
5	C 74	A 76
6	C 74	C 75

There are152 helices in PDB entry 3CMA. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	4	11	Right-handed alpha
Helix 2	2	A	12	17	Right-handed 310
Helix 3	3	A	19	23	Right-handed 310
Helix 4	4	A	97	99	Right-handed 310
Helix 5	5	A	163	167	Right-handed 310
Helix 6	6	A	171	180	Right-handed alpha
Helix 7	7	A	190	194	Right-handed 310
Helix 8	8	B	108	112	Right-handed 310
Helix 9	9	B	120	135	Right-handed alpha
Helix 10	10	B	147	151	Right-handed 310
Helix 11	11	B	170	185	Right-handed alpha
Helix 12	12	B	189	194	Right-handed alpha
Helix 13	13	B	213	219	Right-handed alpha
Helix 14	14	B	224	229	Right-handed 310
Helix 15	15	C	19	24	Right-handed 310
Helix 16	16	C	27	42	Right-handed alpha
Helix 17	17	C	103	118	Right-handed alpha
Helix 18	18	C	120	128	Right-handed alpha
Helix 19	19	C	142	147	Right-handed 310
Helix 20	20	C	149	160	Right-handed alpha
Helix 21	21	C	163	169	Right-handed alpha
Helix 22	22	C	177	183	Right-handed 310
Helix 23	23	C	201	206	Right-handed alpha
Helix 24	24	C	219	224	Right-handed alpha
Helix 25	25	C	225	228	Right-handed 310
Helix 26	26	C	237	245	Right-handed alpha
Helix 27	27	D	37	46	Right-handed alpha
Helix 28	28	D	77	77	Right-handed alpha
Helix 29	29	D	78	88	Right-handed alpha
Helix 30	30	D	89	91	Right-handed 310
Helix 31	31	D	139	144	Right-handed alpha
Helix 32	32	D	152	156	Right-handed 310
Helix 33	33	D	158	168	Right-handed alpha
Helix 34	34	E	55	77	Right-handed alpha
Helix 35	35	E	106	110	Right-handed 310
Helix 36	36	E	137	151	Right-handed alpha
Helix 37	37	F	9	26	Right-handed alpha
Helix 38	38	F	32	43	Right-handed alpha
Helix 39	39	F	57	62	Right-handed alpha
Helix 40	40	F	62	69	Right-handed alpha
Helix 41	41	F	80	87	Right-handed alpha
Helix 42	42	F	104	118	Right-handed alpha
Helix 43	43	G	14	29	Right-handed alpha
Helix 44	44	G	63	73	Right-handed alpha
Helix 45	45	H	5	9	Right-handed 310
Helix 46	46	H	42	46	Right-handed 310
Helix 47	47	H	62	77	Right-handed alpha
Helix 48	48	H	78	81	Right-handed alpha
Helix 49	49	H	145	157	Right-handed alpha
Helix 50	50	I	69	74	Right-handed alpha
Helix 51	51	I	97	101	Right-handed 310
Helix 52	52	I	102	107	Right-handed alpha
Helix 53	53	I	115	124	Right-handed alpha
Helix 54	54	J	18	31	Right-handed alpha
Helix 55	55	J	40	43	Right-handed 310
Helix 56	56	J	49	63	Right-handed alpha
Helix 57	57	J	77	77	Right-handed alpha
Helix 58	58	J	78	85	Right-handed alpha
Helix 59	59	J	91	100	Right-handed alpha
Helix 60	60	J	122	126	Right-handed 310
Helix 61	61	J	132	139	Right-handed alpha
Helix 62	62	K	115	121	Right-handed alpha
Helix 63	63	K	121	126	Right-handed alpha
Helix 64	64	L	2	7	Right-handed alpha
Helix 65	65	L	66	71	Right-handed alpha
Helix 66	66	L	72	77	Right-handed 310
Helix 67	67	L	94	96	Right-handed 310
Helix 68	68	L	126	135	Right-handed alpha
Helix 69	69	M	3	13	Right-handed alpha
Helix 70	70	M	17	32	Right-handed alpha
Helix 71	71	M	45	53	Right-handed alpha
Helix 72	72	M	82	87	Right-handed 310
Helix 73	73	M	96	109	Right-handed alpha
Helix 74	74	M	138	143	Right-handed alpha
Helix 75	75	M	147	156	Right-handed 310
Helix 76	76	M	157	162	Right-handed 310
Helix 77	77	M	164	171	Right-handed alpha
Helix 78	78	M	187	191	Right-handed 310
Helix 79	79	N	10	15	Right-handed alpha
Helix 80	80	N	19	28	Right-handed alpha
Helix 81	81	N	64	70	Right-handed 310
Helix 82	82	N	77	77	Right-handed alpha
Helix 83	83	N	78	95	Right-handed alpha
Helix 84	84	N	113	125	Right-handed alpha
Helix 85	85	N	132	136	Right-handed 310
Helix 86	86	N	138	144	Right-handed alpha
Helix 87	87	N	144	153	Right-handed alpha
Helix 88	88	N	168	181	Right-handed alpha
Helix 89	89	O	4	21	Right-handed alpha
Helix 90	90	O	24	34	Right-handed alpha
Helix 91	91	O	36	40	Right-handed 310
Helix 92	92	O	45	52	Right-handed alpha
Helix 93	93	O	82	93	Right-handed alpha
Helix 94	94	O	97	105	Right-handed alpha
Helix 95	95	P	3	14	Right-handed alpha
Helix 96	96	P	17	19	Right-handed 310
Helix 97	97	P	27	34	Right-handed alpha
Helix 98	98	P	36	46	Right-handed alpha
Helix 99	99	P	59	71	Right-handed alpha
Helix 100	100	P	76	77	Right-handed 310
Helix 101	101	P	78	80	Right-handed 310
Helix 102	102	P	83	88	Right-handed alpha
Helix 103	103	P	89	111	Right-handed alpha
Helix 104	104	P	115	127	Right-handed alpha
Helix 105	105	P	133	142	Right-handed alpha
Helix 106	106	Q	17	21	Right-handed 310
Helix 107	107	Q	26	31	Right-handed alpha
Helix 108	108	Q	53	57	Right-handed 310
Helix 109	109	Q	87	89	Right-handed 310
Helix 110	110	R	24	36	Right-handed alpha
Helix 111	111	R	39	52	Right-handed alpha
Helix 112	112	R	81	102	Right-handed alpha
Helix 113	113	R	129	131	Right-handed 310
Helix 114	114	S	11	20	Right-handed alpha
Helix 115	115	S	33	46	Right-handed alpha
Helix 116	116	S	77	77	Right-handed 310
Helix 117	117	S	78	81	Right-handed 310
Helix 118	118	T	3	13	Right-handed alpha
Helix 119	119	T	15	22	Right-handed 310
Helix 120	120	T	28	36	Right-handed alpha
Helix 121	121	T	92	94	Right-handed 310
Helix 122	122	T	105	114	Right-handed alpha
Helix 123	123	U	33	42	Right-handed alpha
Helix 124	124	U	45	49	Right-handed 310
Helix 125	125	V	4	11	Right-handed alpha
Helix 126	126	V	12	36	Right-handed alpha
Helix 127	127	V	42	64	Right-handed alpha
Helix 128	128	W	14	24	Right-handed alpha
Helix 129	129	W	38	49	Right-handed alpha
Helix 130	130	W	58	70	Right-handed alpha
Helix 131	131	W	80	88	Right-handed alpha
Helix 132	132	W	92	102	Right-handed alpha
Helix 133	133	W	131	135	Right-handed 310
Helix 134	134	W	142	153	Right-handed alpha
Helix 135	135	X	16	20	Right-handed 310
Helix 136	136	X	21	23	Right-handed 310
Helix 137	137	X	24	41	Right-handed alpha
Helix 138	138	X	44	48	Right-handed 310
Helix 139	139	X	51	59	Right-handed alpha
Helix 140	140	Y	110	124	Right-handed alpha
Helix 141	141	Y	165	169	Right-handed 310
Helix 142	142	Y	189	194	Right-handed 310
Helix 143	143	Y	210	224	Right-handed alpha
Helix 144	144	Z	34	39	Right-handed 310
Helix 145	145	Z	43	59	Right-handed alpha
Helix 146	146	Z	97	104	Right-handed alpha
Helix 147	147	1	4	9	Right-handed alpha
Helix 148	148	1	48	52	Right-handed 310
Helix 149	149	2	4	18	Right-handed alpha
Helix 150	150	2	22	29	Right-handed alpha
Helix 151	151	3	34	44	Right-handed alpha
Helix 152	152	3	49	54	Right-handed 310

There are 46 sheets in PDB entry 3CMA. Click on sheet of interest to get list of strands forming it: A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z, AA, AB, AC, AD, AE, AF, AG, AH, AI, AJ, AK, AL, AM, AN, AO, AP, AQ, AR, AS, AT,

There are 4 strands in A sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	65	68	first strand
Strand 2	A	53	60	anti-parallel
Strand 3	A	39	48	anti-parallel
Strand 4	A	79	81	anti-parallel

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There are 6 strands in B sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	93	95	first strand
Strand 2	A	153	156	anti-parallel
Strand 3	A	103	106	anti-parallel
Strand 4	A	126	130	anti-parallel
Strand 5	A	136	139	anti-parallel
Strand 6	A	145	148	anti-parallel

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There are 2 strands in C sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	214	215	first strand
Strand 2	A	227	228	parallel

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There are 5 strands in D sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	37	38	first strand
Strand 2	B	161	167	anti-parallel
Strand 3	B	137	145	anti-parallel
Strand 4	B	79	90	anti-parallel
Strand 5	B	93	101	anti-parallel

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There are 5 strands in E sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	37	38	first strand
Strand 2	B	161	167	anti-parallel
Strand 3	B	137	145	anti-parallel
Strand 4	B	79	90	anti-parallel
Strand 5	B	187	188	anti-parallel

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There are 8 strands in F sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	327	330	first strand
Strand 2	B	41	54	anti-parallel
Strand 3	B	308	313	anti-parallel
Strand 4	B	199	205	anti-parallel
Strand 5	B	261	275	anti-parallel
Strand 6	B	292	298	anti-parallel
Strand 7	B	66	75	anti-parallel
Strand 8	B	41	54	anti-parallel

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There are 2 strands in G sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	211	212	first strand
Strand 2	B	255	256	anti-parallel

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There are 6 strands in H sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	12	17	first strand
Strand 2	C	2	6	anti-parallel
Strand 3	C	138	140	parallel
Strand 4	C	233	236	parallel
Strand 5	C	193	196	parallel
Strand 6	C	211	214	parallel

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There are 2 strands in I sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	173	174	first strand
Strand 2	C	186	187	anti-parallel

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There are 5 strands in J sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	50	52	first strand
Strand 2	D	70	75	anti-parallel
Strand 3	D	17	25	anti-parallel
Strand 4	D	129	135	anti-parallel
Strand 5	D	104	106	anti-parallel

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There are 3 strands in K sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	2	6	first strand
Strand 2	E	46	50	anti-parallel
Strand 3	E	39	43	anti-parallel

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There are 3 strands in L sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	12	16	first strand
Strand 2	E	19	24	anti-parallel
Strand 3	E	27	32	anti-parallel

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There are 4 strands in M sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	123	127	first strand
Strand 2	E	130	135	anti-parallel
Strand 3	E	80	87	anti-parallel
Strand 4	E	165	170	anti-parallel

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There are 3 strands in N sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	94	98	first strand
Strand 2	E	101	105	anti-parallel
Strand 3	E	114	117	anti-parallel

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There are 4 strands in O sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	30	31	first strand
Strand 2	F	95	97	anti-parallel
Strand 3	F	48	51	anti-parallel
Strand 4	F	74	77	parallel

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There are 5 strands in P sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	35	37	first strand
Strand 2	H	87	90	anti-parallel
Strand 3	H	135	141	anti-parallel
Strand 4	H	48	54	anti-parallel
Strand 5	H	164	168	anti-parallel

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There are 3 strands in Q sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	58	61	first strand
Strand 2	H	122	130	anti-parallel
Strand 3	H	96	100	anti-parallel

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There are 2 strands in R sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	I	94	95	first strand
Strand 2	I	133	134	parallel

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There are 3 strands in S sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	J	10	13	first strand
Strand 2	J	36	39	parallel
Strand 3	J	101	103	parallel

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There are 2 strands in T sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	J	45	47	first strand
Strand 2	J	129	131	anti-parallel

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There are 5 strands in U sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	K	7	8	first strand
Strand 2	K	80	81	anti-parallel
Strand 3	K	87	90	anti-parallel
Strand 4	U	19	22	parallel
Strand 5	U	28	31	anti-parallel

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There are 2 strands in V sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	K	12	13	first strand
Strand 2	K	46	47	anti-parallel

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There are 6 strands in W sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	K	17	20	first strand
Strand 2	K	26	34	anti-parallel
Strand 3	K	52	60	anti-parallel
Strand 4	K	68	75	anti-parallel
Strand 5	K	94	98	anti-parallel
Strand 6	K	17	20	parallel

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There are 2 strands in X sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	K	112	114	first strand
Strand 2	K	130	132	parallel

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There are 3 strands in Y sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	L	61	65	first strand
Strand 2	L	105	109	parallel
Strand 3	L	124	125	parallel

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There are 3 strands in Z sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	L	90	92	first strand
Strand 2	L	119	122	parallel
Strand 3	L	139	142	parallel

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There are 4 strands in AA sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	M	37	40	first strand
Strand 2	M	60	68	anti-parallel
Strand 3	M	126	134	anti-parallel
Strand 4	M	113	122	anti-parallel

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There are 4 strands in AB sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	N	56	62	first strand
Strand 2	N	43	49	anti-parallel
Strand 3	N	33	38	anti-parallel
Strand 4	N	101	103	parallel

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There are 4 strands in AC sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	O	41	44	first strand
Strand 2	O	57	65	parallel
Strand 3	O	75	81	parallel
Strand 4	O	94	95	parallel

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There are 3 strands in AD sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	O	41	44	first strand
Strand 2	O	57	65	parallel
Strand 3	O	111	113	parallel

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There are 2 strands in AE sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	P	21	23	first strand
Strand 2	P	49	51	anti-parallel

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There are 5 strands in AF sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	Q	80	86	first strand
Strand 2	Q	70	77	anti-parallel
Strand 3	Q	60	67	anti-parallel
Strand 4	Q	38	41	anti-parallel
Strand 5	Q	91	93	anti-parallel

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There are 3 strands in AG sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	R	13	21	first strand
Strand 2	R	138	148	anti-parallel
Strand 3	R	110	122	anti-parallel

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There are 2 strands in AH sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	R	57	58	first strand
Strand 2	R	78	79	anti-parallel

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There are 2 strands in AI sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	R	125	128	first strand
Strand 2	R	132	135	anti-parallel

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There are 4 strands in AJ sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	S	5	8	first strand
Strand 2	S	23	28	anti-parallel
Strand 3	S	62	68	anti-parallel
Strand 4	S	49	56	anti-parallel

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There are 6 strands in AK sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	T	39	41	first strand
Strand 2	T	24	27	anti-parallel
Strand 3	T	96	100	parallel
Strand 4	T	47	50	anti-parallel
Strand 5	T	59	66	anti-parallel
Strand 6	T	71	74	anti-parallel

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There are 2 strands in AL sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	T	78	80	first strand
Strand 2	T	86	88	anti-parallel

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There are 5 strands in AM sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	W	115	117	first strand
Strand 2	W	31	35	anti-parallel
Strand 3	W	2	6	anti-parallel
Strand 4	W	52	55	anti-parallel
Strand 5	W	139	141	parallel

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There are 4 strands in AN sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	X	8	13	first strand
Strand 2	X	69	77	anti-parallel
Strand 3	X	82	86	anti-parallel
Strand 4	X	49	50	parallel

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There are 2 strands in AO sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	Y	96	99	first strand
Strand 2	Y	233	236	anti-parallel

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There are 2 strands in AP sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	Y	183	187	first strand
Strand 2	Y	201	205	parallel

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There are 3 strands in AQ sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	Z	71	73	first strand
Strand 2	Z	78	81	anti-parallel
Strand 3	Z	87	89	anti-parallel

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There are 3 strands in AR sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	1	16	18	first strand
Strand 2	1	25	28	anti-parallel
Strand 3	1	33	34	anti-parallel

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There are 2 strands in AS sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	3	2	4	first strand
Strand 2	3	89	91	parallel

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There are 3 strands in AT sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	3	6	11	first strand
Strand 2	3	16	24	anti-parallel
Strand 3	3	67	71	anti-parallel

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Analysis of interatomic Contacts of Structural Units in PDB entry: 3CMA

Analysis of interatomic Contacts of Structural Units in PDB entry:
3CMA