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

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 3IKY entry

There are 12 chains in PDB entry 3IKY (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	MET 1	ASN 320
B	MET 1	ASN 320
C	MET 1	ASN 320
D	MET 1	ASN 320
E	MET 1	ASN 320
F	MET 1	ASN 320
G	MET 1	ASN 320
H	MET 1	ASN 320
I	MET 1	ASN 320
J	MET 1	ASN 320
K	MET 1	ASN 320
L	MET 1	ASN 320

There are168 helices in PDB entry 3IKY. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	69	74	Right-handed 310
Helix 2	2	A	75	90	Right-handed alpha
Helix 3	3	A	103	108	Right-handed alpha
Helix 4	4	A	115	126	Right-handed alpha
Helix 5	5	A	149	152	Right-handed 310
Helix 6	6	A	153	159	Right-handed alpha
Helix 7	7	A	184	186	Right-handed 310
Helix 8	8	A	199	211	Right-handed alpha
Helix 9	9	A	215	228	Right-handed alpha
Helix 10	10	A	231	239	Right-handed alpha
Helix 11	11	A	241	268	Right-handed alpha
Helix 12	12	A	282	295	Right-handed alpha
Helix 13	13	A	297	299	Right-handed 310
Helix 14	14	A	309	320	Right-handed alpha
Helix 15	15	B	69	74	Right-handed 310
Helix 16	16	B	75	90	Right-handed alpha
Helix 17	17	B	103	108	Right-handed alpha
Helix 18	18	B	115	126	Right-handed alpha
Helix 19	19	B	149	152	Right-handed 310
Helix 20	20	B	153	159	Right-handed alpha
Helix 21	21	B	184	186	Right-handed 310
Helix 22	22	B	199	211	Right-handed alpha
Helix 23	23	B	215	228	Right-handed alpha
Helix 24	24	B	231	239	Right-handed alpha
Helix 25	25	B	241	268	Right-handed alpha
Helix 26	26	B	282	295	Right-handed alpha
Helix 27	27	B	297	299	Right-handed 310
Helix 28	28	B	309	320	Right-handed alpha
Helix 29	29	C	69	74	Right-handed 310
Helix 30	30	C	75	90	Right-handed alpha
Helix 31	31	C	103	108	Right-handed alpha
Helix 32	32	C	115	126	Right-handed alpha
Helix 33	33	C	149	152	Right-handed 310
Helix 34	34	C	153	159	Right-handed alpha
Helix 35	35	C	184	186	Right-handed 310
Helix 36	36	C	199	211	Right-handed alpha
Helix 37	37	C	215	228	Right-handed alpha
Helix 38	38	C	231	239	Right-handed alpha
Helix 39	39	C	241	268	Right-handed alpha
Helix 40	40	C	282	295	Right-handed alpha
Helix 41	41	C	297	299	Right-handed 310
Helix 42	42	C	309	320	Right-handed alpha
Helix 43	43	D	69	74	Right-handed 310
Helix 44	44	D	75	90	Right-handed alpha
Helix 45	45	D	103	108	Right-handed alpha
Helix 46	46	D	115	126	Right-handed alpha
Helix 47	47	D	149	152	Right-handed 310
Helix 48	48	D	153	159	Right-handed alpha
Helix 49	49	D	184	186	Right-handed 310
Helix 50	50	D	199	211	Right-handed alpha
Helix 51	51	D	215	228	Right-handed alpha
Helix 52	52	D	231	239	Right-handed alpha
Helix 53	53	D	241	268	Right-handed alpha
Helix 54	54	D	282	295	Right-handed alpha
Helix 55	55	D	297	299	Right-handed 310
Helix 56	56	D	309	320	Right-handed alpha
Helix 57	57	E	69	74	Right-handed 310
Helix 58	58	E	75	90	Right-handed alpha
Helix 59	59	E	103	108	Right-handed alpha
Helix 60	60	E	115	126	Right-handed alpha
Helix 61	61	E	149	152	Right-handed 310
Helix 62	62	E	153	159	Right-handed alpha
Helix 63	63	E	184	186	Right-handed 310
Helix 64	64	E	199	211	Right-handed alpha
Helix 65	65	E	215	228	Right-handed alpha
Helix 66	66	E	231	239	Right-handed alpha
Helix 67	67	E	241	268	Right-handed alpha
Helix 68	68	E	282	295	Right-handed alpha
Helix 69	69	E	297	299	Right-handed 310
Helix 70	70	E	309	320	Right-handed alpha
Helix 71	71	F	69	74	Right-handed 310
Helix 72	72	F	75	90	Right-handed alpha
Helix 73	73	F	103	108	Right-handed alpha
Helix 74	74	F	115	126	Right-handed alpha
Helix 75	75	F	149	152	Right-handed 310
Helix 76	76	F	153	159	Right-handed alpha
Helix 77	77	F	184	186	Right-handed 310
Helix 78	78	F	199	211	Right-handed alpha
Helix 79	79	F	215	228	Right-handed alpha
Helix 80	80	F	231	239	Right-handed alpha
Helix 81	81	F	241	268	Right-handed alpha
Helix 82	82	F	282	295	Right-handed alpha
Helix 83	83	F	297	299	Right-handed 310
Helix 84	84	F	309	320	Right-handed alpha
Helix 85	85	G	69	74	Right-handed 310
Helix 86	86	G	75	90	Right-handed alpha
Helix 87	87	G	103	108	Right-handed alpha
Helix 88	88	G	115	126	Right-handed alpha
Helix 89	89	G	149	152	Right-handed 310
Helix 90	90	G	153	159	Right-handed alpha
Helix 91	91	G	184	186	Right-handed 310
Helix 92	92	G	199	211	Right-handed alpha
Helix 93	93	G	215	228	Right-handed alpha
Helix 94	94	G	231	239	Right-handed alpha
Helix 95	95	G	241	268	Right-handed alpha
Helix 96	96	G	282	295	Right-handed alpha
Helix 97	97	G	297	299	Right-handed 310
Helix 98	98	G	309	320	Right-handed alpha
Helix 99	99	H	69	74	Right-handed 310
Helix 100	100	H	75	90	Right-handed alpha
Helix 101	101	H	103	108	Right-handed alpha
Helix 102	102	H	115	126	Right-handed alpha
Helix 103	103	H	149	152	Right-handed 310
Helix 104	104	H	153	159	Right-handed alpha
Helix 105	105	H	184	186	Right-handed 310
Helix 106	106	H	199	211	Right-handed alpha
Helix 107	107	H	215	228	Right-handed alpha
Helix 108	108	H	231	239	Right-handed alpha
Helix 109	109	H	241	268	Right-handed alpha
Helix 110	110	H	282	295	Right-handed alpha
Helix 111	111	H	297	299	Right-handed 310
Helix 112	112	H	309	320	Right-handed alpha
Helix 113	113	I	69	74	Right-handed 310
Helix 114	114	I	75	90	Right-handed alpha
Helix 115	115	I	103	108	Right-handed alpha
Helix 116	116	I	115	126	Right-handed alpha
Helix 117	117	I	149	152	Right-handed 310
Helix 118	118	I	153	159	Right-handed alpha
Helix 119	119	I	184	186	Right-handed 310
Helix 120	120	I	199	211	Right-handed alpha
Helix 121	121	I	215	228	Right-handed alpha
Helix 122	122	I	231	239	Right-handed alpha
Helix 123	123	I	241	268	Right-handed alpha
Helix 124	124	I	282	295	Right-handed alpha
Helix 125	125	I	297	299	Right-handed 310
Helix 126	126	I	309	320	Right-handed alpha
Helix 127	127	J	69	74	Right-handed 310
Helix 128	128	J	75	90	Right-handed alpha
Helix 129	129	J	103	108	Right-handed alpha
Helix 130	130	J	115	126	Right-handed alpha
Helix 131	131	J	149	152	Right-handed 310
Helix 132	132	J	153	159	Right-handed alpha
Helix 133	133	J	184	186	Right-handed 310
Helix 134	134	J	199	211	Right-handed alpha
Helix 135	135	J	215	228	Right-handed alpha
Helix 136	136	J	231	239	Right-handed alpha
Helix 137	137	J	241	268	Right-handed alpha
Helix 138	138	J	282	295	Right-handed alpha
Helix 139	139	J	297	299	Right-handed 310
Helix 140	140	J	309	320	Right-handed alpha
Helix 141	141	K	69	74	Right-handed 310
Helix 142	142	K	75	90	Right-handed alpha
Helix 143	143	K	103	108	Right-handed alpha
Helix 144	144	K	115	126	Right-handed alpha
Helix 145	145	K	149	152	Right-handed 310
Helix 146	146	K	153	159	Right-handed alpha
Helix 147	147	K	184	186	Right-handed 310
Helix 148	148	K	199	211	Right-handed alpha
Helix 149	149	K	215	228	Right-handed alpha
Helix 150	150	K	231	239	Right-handed alpha
Helix 151	151	K	241	268	Right-handed alpha
Helix 152	152	K	282	295	Right-handed alpha
Helix 153	153	K	297	299	Right-handed 310
Helix 154	154	K	309	320	Right-handed alpha
Helix 155	155	L	69	74	Right-handed 310
Helix 156	156	L	75	90	Right-handed alpha
Helix 157	157	L	103	108	Right-handed alpha
Helix 158	158	L	115	126	Right-handed alpha
Helix 159	159	L	149	152	Right-handed 310
Helix 160	160	L	153	159	Right-handed alpha
Helix 161	161	L	184	186	Right-handed 310
Helix 162	162	L	199	211	Right-handed alpha
Helix 163	163	L	215	228	Right-handed alpha
Helix 164	164	L	231	239	Right-handed alpha
Helix 165	165	L	241	268	Right-handed alpha
Helix 166	166	L	282	295	Right-handed alpha
Helix 167	167	L	297	299	Right-handed 310
Helix 168	168	L	309	320	Right-handed alpha

There are 36 sheets in PDB entry 3IKY. 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,

There are 5 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	23	28	first strand
Strand 2	A	12	17	anti-parallel
Strand 3	A	2	7	anti-parallel
Strand 4	A	95	102	parallel
Strand 5	A	139	147	parallel

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There are 4 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	32	33	first strand
Strand 2	A	54	57	anti-parallel
Strand 3	A	47	49	anti-parallel
Strand 4	A	131	132	anti-parallel

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There are 5 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	188	194	first strand
Strand 2	A	176	182	anti-parallel
Strand 3	A	165	171	anti-parallel
Strand 4	A	275	279	parallel
Strand 5	A	301	302	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	23	28	first strand
Strand 2	B	12	17	anti-parallel
Strand 3	B	2	7	anti-parallel
Strand 4	B	95	102	parallel
Strand 5	B	139	147	parallel

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There are 4 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	32	33	first strand
Strand 2	B	54	57	anti-parallel
Strand 3	B	47	49	anti-parallel
Strand 4	B	131	132	anti-parallel

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There are 5 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	188	194	first strand
Strand 2	B	176	182	anti-parallel
Strand 3	B	165	171	anti-parallel
Strand 4	B	275	279	parallel
Strand 5	B	301	302	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	23	28	first strand
Strand 2	C	12	17	anti-parallel
Strand 3	C	2	7	anti-parallel
Strand 4	C	95	102	parallel
Strand 5	C	139	147	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	C	32	33	first strand
Strand 2	C	54	57	anti-parallel
Strand 3	C	47	49	anti-parallel
Strand 4	C	131	132	anti-parallel

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There are 5 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	188	194	first strand
Strand 2	C	176	182	anti-parallel
Strand 3	C	165	171	anti-parallel
Strand 4	C	275	279	parallel
Strand 5	C	301	302	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	23	28	first strand
Strand 2	D	12	17	anti-parallel
Strand 3	D	2	7	anti-parallel
Strand 4	D	95	102	parallel
Strand 5	D	139	147	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	D	32	33	first strand
Strand 2	D	54	57	anti-parallel
Strand 3	D	47	49	anti-parallel
Strand 4	D	131	132	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	188	194	first strand
Strand 2	D	176	182	anti-parallel
Strand 3	D	165	171	anti-parallel
Strand 4	D	275	279	parallel
Strand 5	D	301	302	parallel

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There are 5 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	23	28	first strand
Strand 2	E	12	17	anti-parallel
Strand 3	E	2	7	anti-parallel
Strand 4	E	95	102	parallel
Strand 5	E	139	147	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	E	32	33	first strand
Strand 2	E	54	57	anti-parallel
Strand 3	E	47	49	anti-parallel
Strand 4	E	131	132	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	188	194	first strand
Strand 2	E	176	182	anti-parallel
Strand 3	E	165	171	anti-parallel
Strand 4	E	275	279	parallel
Strand 5	E	301	302	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	F	23	28	first strand
Strand 2	F	12	17	anti-parallel
Strand 3	F	2	7	anti-parallel
Strand 4	F	95	102	parallel
Strand 5	F	139	147	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	32	33	first strand
Strand 2	F	54	57	anti-parallel
Strand 3	F	47	49	anti-parallel
Strand 4	F	131	132	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	188	194	first strand
Strand 2	F	176	182	anti-parallel
Strand 3	F	165	171	anti-parallel
Strand 4	F	275	279	parallel
Strand 5	F	301	302	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	G	23	28	first strand
Strand 2	G	12	17	anti-parallel
Strand 3	G	2	7	anti-parallel
Strand 4	G	95	102	parallel
Strand 5	G	139	147	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	G	32	33	first strand
Strand 2	G	54	57	anti-parallel
Strand 3	G	47	49	anti-parallel
Strand 4	G	131	132	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	G	188	194	first strand
Strand 2	G	176	182	anti-parallel
Strand 3	G	165	171	anti-parallel
Strand 4	G	275	279	parallel
Strand 5	G	301	302	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	23	28	first strand
Strand 2	H	12	17	anti-parallel
Strand 3	H	2	7	anti-parallel
Strand 4	H	95	102	parallel
Strand 5	H	139	147	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	H	32	33	first strand
Strand 2	H	54	57	anti-parallel
Strand 3	H	47	49	anti-parallel
Strand 4	H	131	132	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	188	194	first strand
Strand 2	H	176	182	anti-parallel
Strand 3	H	165	171	anti-parallel
Strand 4	H	275	279	parallel
Strand 5	H	301	302	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	I	23	28	first strand
Strand 2	I	12	17	anti-parallel
Strand 3	I	2	7	anti-parallel
Strand 4	I	95	102	parallel
Strand 5	I	139	147	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	I	32	33	first strand
Strand 2	I	54	57	anti-parallel
Strand 3	I	47	49	anti-parallel
Strand 4	I	131	132	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	I	188	194	first strand
Strand 2	I	176	182	anti-parallel
Strand 3	I	165	171	anti-parallel
Strand 4	I	275	279	parallel
Strand 5	I	301	302	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	J	23	28	first strand
Strand 2	J	12	17	anti-parallel
Strand 3	J	2	7	anti-parallel
Strand 4	J	95	102	parallel
Strand 5	J	139	147	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	J	32	33	first strand
Strand 2	J	54	57	anti-parallel
Strand 3	J	47	49	anti-parallel
Strand 4	J	131	132	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	J	188	194	first strand
Strand 2	J	176	182	anti-parallel
Strand 3	J	165	171	anti-parallel
Strand 4	J	275	279	parallel
Strand 5	J	301	302	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	K	23	28	first strand
Strand 2	K	12	17	anti-parallel
Strand 3	K	2	7	anti-parallel
Strand 4	K	95	102	parallel
Strand 5	K	139	147	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	K	32	33	first strand
Strand 2	K	54	57	anti-parallel
Strand 3	K	47	49	anti-parallel
Strand 4	K	131	132	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	K	188	194	first strand
Strand 2	K	176	182	anti-parallel
Strand 3	K	165	171	anti-parallel
Strand 4	K	275	279	parallel
Strand 5	K	301	302	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	L	23	28	first strand
Strand 2	L	12	17	anti-parallel
Strand 3	L	2	7	anti-parallel
Strand 4	L	95	102	parallel
Strand 5	L	139	147	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	L	32	33	first strand
Strand 2	L	54	57	anti-parallel
Strand 3	L	47	49	anti-parallel
Strand 4	L	131	132	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	L	188	194	first strand
Strand 2	L	176	182	anti-parallel
Strand 3	L	165	171	anti-parallel
Strand 4	L	275	279	parallel
Strand 5	L	301	302	parallel

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Please mail questions/suggestions concerning this page to Vladimir.Sobolev@weizmann. ac.il

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

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