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

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 3CSY entry

There are 6 chains in PDB entry 3CSY (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	GLU 1	LYS 228
B	GLU 1	ARG 211
C	GLU 1	LYS 228
D	GLU 1	ARG 211
E	GLU 1	LYS 228
F	GLU 1	HIS 198

There are 52 helices in PDB entry 3CSY. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	28	32	Right-handed 310
Helix 2	2	A	83	87	Right-handed 310
Helix 3	3	A	213	216	Right-handed 310
Helix 4	4	B	79	83	Right-handed 310
Helix 5	5	B	121	126	Right-handed alpha
Helix 6	6	B	183	187	Right-handed alpha
Helix 7	7	C	28	32	Right-handed 310
Helix 8	8	C	61	64	Right-handed 310
Helix 9	9	C	83	87	Right-handed 310
Helix 10	10	C	213	216	Right-handed 310
Helix 11	11	D	79	83	Right-handed 310
Helix 12	12	D	121	126	Right-handed alpha
Helix 13	13	D	183	188	Right-handed alpha
Helix 14	14	E	28	32	Right-handed 310
Helix 15	15	E	61	64	Right-handed 310
Helix 16	16	E	83	87	Right-handed 310
Helix 17	17	E	196	199	Right-handed 310
Helix 18	18	E	213	216	Right-handed 310
Helix 19	19	F	121	126	Right-handed alpha
Helix 20	20	F	183	188	Right-handed alpha
Helix 21	21	G	28	32	Right-handed 310
Helix 22	22	G	61	64	Right-handed 310
Helix 23	23	G	73	75	Right-handed 310
Helix 24	24	G	83	87	Right-handed 310
Helix 25	25	G	196	199	Right-handed 310
Helix 26	26	G	213	216	Right-handed 310
Helix 27	27	H	79	83	Right-handed 310
Helix 28	28	H	121	126	Right-handed alpha
Helix 29	29	H	183	188	Right-handed alpha
Helix 30	30	I	59	61	Right-handed 310
Helix 31	31	I	71	74	Right-handed 310
Helix 32	32	I	78	84	Right-handed alpha
Helix 33	33	I	249	264	Right-handed alpha
Helix 34	34	J	553	576	Right-handed alpha
Helix 35	35	J	583	596	Right-handed alpha
Helix 36	36	K	59	61	Right-handed 310
Helix 37	37	K	71	74	Right-handed 310
Helix 38	38	K	78	85	Right-handed alpha
Helix 39	39	K	249	264	Right-handed alpha
Helix 40	40	L	553	576	Right-handed alpha
Helix 41	41	L	583	596	Right-handed alpha
Helix 42	42	M	59	61	Right-handed 310
Helix 43	43	M	71	74	Right-handed 310
Helix 44	44	M	78	84	Right-handed alpha
Helix 45	45	M	249	262	Right-handed alpha
Helix 46	46	N	553	576	Right-handed alpha
Helix 47	47	N	584	596	Right-handed alpha
Helix 48	48	O	71	74	Right-handed 310
Helix 49	49	O	78	84	Right-handed alpha
Helix 50	50	O	249	264	Right-handed alpha
Helix 51	51	P	553	576	Right-handed alpha
Helix 52	52	P	583	596	Right-handed alpha

There are 57 sheets in PDB entry 3CSY. 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, AU, AV, AW, AX, AY, AZ, BA, BB, BC, BD, BE,

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	3	7	first strand
Strand 2	A	18	25	anti-parallel
Strand 3	A	77	82	anti-parallel
Strand 4	A	67	72	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	10	12	first strand
Strand 2	A	107	111	parallel
Strand 3	A	88	95	anti-parallel
Strand 4	A	34	39	anti-parallel
Strand 5	A	45	51	anti-parallel
Strand 6	A	57	59	anti-parallel

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There are 4 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	10	12	first strand
Strand 2	A	107	111	parallel
Strand 3	A	88	95	anti-parallel
Strand 4	A	100	103	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	120	124	first strand
Strand 2	A	138	147	anti-parallel
Strand 3	A	185	193	anti-parallel
Strand 4	A	171	173	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	153	157	first strand
Strand 2	A	208	212	anti-parallel
Strand 3	A	217	219	anti-parallel

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There are 4 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	4	7	first strand
Strand 2	B	19	25	anti-parallel
Strand 3	B	70	75	anti-parallel
Strand 4	B	62	67	anti-parallel

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There are 6 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	10	14	first strand
Strand 2	B	102	107	parallel
Strand 3	B	84	90	anti-parallel
Strand 4	B	33	38	anti-parallel
Strand 5	B	44	49	anti-parallel
Strand 6	B	53	54	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	10	14	first strand
Strand 2	B	102	107	parallel
Strand 3	B	84	90	anti-parallel
Strand 4	B	97	98	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	129	139	first strand
Strand 2	B	173	182	anti-parallel
Strand 3	B	159	163	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	153	154	first strand
Strand 2	B	145	150	anti-parallel
Strand 3	B	192	197	anti-parallel
Strand 4	B	205	209	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	3	7	first strand
Strand 2	C	18	25	anti-parallel
Strand 3	C	77	82	anti-parallel
Strand 4	C	67	72	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	10	12	first strand
Strand 2	C	107	111	parallel
Strand 3	C	88	95	anti-parallel
Strand 4	C	34	39	anti-parallel
Strand 5	C	45	51	anti-parallel
Strand 6	C	57	59	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	C	10	12	first strand
Strand 2	C	107	111	parallel
Strand 3	C	88	95	anti-parallel
Strand 4	C	100	103	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	120	124	first strand
Strand 2	C	137	147	anti-parallel
Strand 3	C	185	194	anti-parallel
Strand 4	C	171	174	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	153	157	first strand
Strand 2	C	207	212	anti-parallel
Strand 3	C	217	222	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	4	5	first strand
Strand 2	D	19	25	anti-parallel
Strand 3	D	70	75	anti-parallel
Strand 4	D	62	67	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	10	14	first strand
Strand 2	D	102	107	parallel
Strand 3	D	84	90	anti-parallel
Strand 4	D	33	38	anti-parallel
Strand 5	D	45	49	anti-parallel
Strand 6	D	53	54	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	10	14	first strand
Strand 2	D	102	107	parallel
Strand 3	D	84	90	anti-parallel
Strand 4	D	97	98	anti-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	D	129	139	first strand
Strand 2	D	173	182	anti-parallel
Strand 3	D	159	163	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	153	154	first strand
Strand 2	D	145	150	anti-parallel
Strand 3	D	192	197	anti-parallel
Strand 4	D	205	209	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	3	7	first strand
Strand 2	E	18	25	anti-parallel
Strand 3	E	77	82	anti-parallel
Strand 4	E	68	72	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	10	12	first strand
Strand 2	E	107	111	parallel
Strand 3	E	88	95	anti-parallel
Strand 4	E	34	39	anti-parallel
Strand 5	E	45	51	anti-parallel
Strand 6	E	57	59	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	10	12	first strand
Strand 2	E	107	111	parallel
Strand 3	E	88	95	anti-parallel
Strand 4	E	100	103	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	120	124	first strand
Strand 2	E	137	147	anti-parallel
Strand 3	E	185	194	anti-parallel
Strand 4	E	171	173	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	120	124	first strand
Strand 2	E	137	147	anti-parallel
Strand 3	E	185	194	anti-parallel
Strand 4	E	177	178	anti-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	E	153	157	first strand
Strand 2	E	208	212	anti-parallel
Strand 3	E	217	219	anti-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	F	5	7	first strand
Strand 2	F	19	24	anti-parallel
Strand 3	F	70	75	anti-parallel
Strand 4	F	62	67	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	10	14	first strand
Strand 2	F	102	107	parallel
Strand 3	F	84	90	anti-parallel
Strand 4	F	33	38	anti-parallel
Strand 5	F	45	49	anti-parallel
Strand 6	F	53	54	anti-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	F	10	14	first strand
Strand 2	F	102	107	parallel
Strand 3	F	84	90	anti-parallel
Strand 4	F	97	98	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	116	118	first strand
Strand 2	F	129	139	anti-parallel
Strand 3	F	173	182	anti-parallel
Strand 4	F	159	163	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	153	154	first strand
Strand 2	F	145	150	anti-parallel
Strand 3	F	192	197	anti-parallel
Strand 4	F	205	209	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	G	3	7	first strand
Strand 2	G	18	25	anti-parallel
Strand 3	G	77	82	anti-parallel
Strand 4	G	67	72	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	G	10	12	first strand
Strand 2	G	107	111	parallel
Strand 3	G	88	95	anti-parallel
Strand 4	G	34	39	anti-parallel
Strand 5	G	45	51	anti-parallel
Strand 6	G	57	59	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	G	10	12	first strand
Strand 2	G	107	111	parallel
Strand 3	G	88	95	anti-parallel
Strand 4	G	100	103	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	G	120	124	first strand
Strand 2	G	137	147	anti-parallel
Strand 3	G	185	194	anti-parallel
Strand 4	G	171	173	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	G	120	124	first strand
Strand 2	G	137	147	anti-parallel
Strand 3	G	185	194	anti-parallel
Strand 4	G	177	178	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	G	210	212	first strand
Strand 2	G	217	219	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	4	7	first strand
Strand 2	H	19	25	anti-parallel
Strand 3	H	70	75	anti-parallel
Strand 4	H	62	67	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	H	10	14	first strand
Strand 2	H	102	107	parallel
Strand 3	H	84	90	anti-parallel
Strand 4	H	33	38	anti-parallel
Strand 5	H	45	48	anti-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	H	10	14	first strand
Strand 2	H	102	107	parallel
Strand 3	H	84	90	anti-parallel
Strand 4	H	97	98	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	129	139	first strand
Strand 2	H	173	182	anti-parallel
Strand 3	H	159	163	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	153	154	first strand
Strand 2	H	145	150	anti-parallel
Strand 3	H	192	197	anti-parallel
Strand 4	H	205	209	anti-parallel

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There are 7 strands in AQ sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	I	42	46	first strand
Strand 2	I	35	39	anti-parallel
Strand 3	I	175	185	parallel
Strand 4	I	63	69	anti-parallel
Strand 5	I	101	103	parallel
Strand 6	J	515	520	anti-parallel
Strand 7	J	543	548	anti-parallel

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There are 9 strands in AR sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	I	231	234	first strand
Strand 2	I	216	223	anti-parallel
Strand 3	I	135	144	parallel
Strand 4	I	105	114	parallel
Strand 5	I	175	185	anti-parallel
Strand 6	I	159	161	anti-parallel
Strand 7	I	165	167	anti-parallel
Strand 8	I	96	98	anti-parallel
Strand 9	J	580	581	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	I	86	89	first strand
Strand 2	I	151	154	anti-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	I	241	242	first strand
Strand 2	I	273	276	parallel
Strand 3	I	305	307	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	K	42	46	first strand
Strand 2	K	35	39	anti-parallel
Strand 3	K	175	185	parallel
Strand 4	K	63	69	anti-parallel
Strand 5	K	101	103	parallel
Strand 6	L	515	519	anti-parallel

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There are 12 strands in AV sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	K	305	307	first strand
Strand 2	K	272	276	anti-parallel
Strand 3	K	240	243	parallel
Strand 4	K	231	235	anti-parallel
Strand 5	K	216	223	anti-parallel
Strand 6	K	135	144	parallel
Strand 7	K	105	114	parallel
Strand 8	K	175	185	anti-parallel
Strand 9	K	159	162	anti-parallel
Strand 10	K	165	167	anti-parallel
Strand 11	K	96	98	anti-parallel
Strand 12	L	580	581	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	K	86	89	first strand
Strand 2	K	151	154	anti-parallel

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There are 7 strands in AX sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	M	42	46	first strand
Strand 2	M	35	39	anti-parallel
Strand 3	M	177	185	parallel
Strand 4	M	63	69	anti-parallel
Strand 5	M	101	103	parallel
Strand 6	N	515	520	anti-parallel
Strand 7	N	543	548	anti-parallel

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There are 7 strands in AY sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	M	42	46	first strand
Strand 2	M	35	39	anti-parallel
Strand 3	M	177	185	parallel
Strand 4	M	159	162	anti-parallel
Strand 5	M	165	167	anti-parallel
Strand 6	M	96	98	anti-parallel
Strand 7	N	580	581	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	M	86	89	first strand
Strand 2	M	151	154	anti-parallel

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There are 7 strands in BA sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	M	109	114	first strand
Strand 2	M	137	144	parallel
Strand 3	M	216	223	parallel
Strand 4	M	231	235	anti-parallel
Strand 5	M	240	243	anti-parallel
Strand 6	M	272	276	parallel
Strand 7	M	305	306	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	O	42	46	first strand
Strand 2	O	35	39	anti-parallel
Strand 3	O	177	185	parallel
Strand 4	O	63	69	anti-parallel
Strand 5	O	101	103	parallel
Strand 6	P	515	520	anti-parallel

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There are 9 strands in BC sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	P	543	544	first strand
Strand 2	P	515	520	anti-parallel
Strand 3	O	101	103	anti-parallel
Strand 4	O	63	69	parallel
Strand 5	O	177	185	anti-parallel
Strand 6	O	159	162	anti-parallel
Strand 7	O	165	167	anti-parallel
Strand 8	O	96	98	anti-parallel
Strand 9	P	580	581	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	O	86	88	first strand
Strand 2	O	152	154	anti-parallel

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There are 7 strands in BE sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	O	118	120	first strand
Strand 2	O	105	115	anti-parallel
Strand 3	O	135	144	parallel
Strand 4	O	217	223	parallel
Strand 5	O	231	235	anti-parallel
Strand 6	O	241	243	anti-parallel
Strand 7	O	273	274	parallel

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

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