Analysis of interatomic Contacts of Structural Units in PDB entry:
4IRN

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 4IRN entry

There are 8 chains in PDB entry 4IRN (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	ALA 4	LEU 381
B	ALA 4	LEU 381
C	ALA 4	LEU 381
D	ALA 4	LEU 381
E	ALA 4	LEU 381
F	ALA 4	LEU 381
G	ALA 4	LEU 381
H	ALA 4	LEU 381

There are146 helices in PDB entry 4IRN. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	6	24	Right-handed alpha
Helix 2	2	A	27	35	Right-handed alpha
Helix 3	3	A	38	49	Right-handed alpha
Helix 4	4	A	50	53	Right-handed 310
Helix 5	5	A	56	60	Right-handed 310
Helix 6	6	A	65	80	Right-handed alpha
Helix 7	7	A	82	96	Right-handed alpha
Helix 8	8	A	96	104	Right-handed alpha
Helix 9	9	A	105	119	Right-handed alpha
Helix 10	10	A	135	139	Right-handed 310
Helix 11	11	A	175	181	Right-handed 310
Helix 12	12	A	232	248	Right-handed alpha
Helix 13	13	A	249	270	Right-handed alpha
Helix 14	14	A	280	310	Right-handed alpha
Helix 15	15	A	314	341	Right-handed alpha
Helix 16	16	A	342	349	Right-handed 310
Helix 17	17	A	350	361	Right-handed alpha
Helix 18	18	A	367	380	Right-handed alpha
Helix 19	19	B	6	24	Right-handed alpha
Helix 20	20	B	27	35	Right-handed alpha
Helix 21	21	B	38	49	Right-handed alpha
Helix 22	22	B	50	53	Right-handed 310
Helix 23	23	B	56	60	Right-handed 310
Helix 24	24	B	65	80	Right-handed alpha
Helix 25	25	B	82	96	Right-handed alpha
Helix 26	26	B	96	104	Right-handed alpha
Helix 27	27	B	105	118	Right-handed alpha
Helix 28	28	B	135	139	Right-handed 310
Helix 29	29	B	175	181	Right-handed 310
Helix 30	30	B	232	248	Right-handed alpha
Helix 31	31	B	249	270	Right-handed alpha
Helix 32	32	B	280	310	Right-handed alpha
Helix 33	33	B	314	341	Right-handed alpha
Helix 34	34	B	342	349	Right-handed 310
Helix 35	35	B	350	361	Right-handed alpha
Helix 36	36	B	367	380	Right-handed alpha
Helix 37	37	C	6	24	Right-handed alpha
Helix 38	38	C	27	35	Right-handed alpha
Helix 39	39	C	38	49	Right-handed alpha
Helix 40	40	C	50	53	Right-handed 310
Helix 41	41	C	56	60	Right-handed 310
Helix 42	42	C	65	80	Right-handed alpha
Helix 43	43	C	82	96	Right-handed alpha
Helix 44	44	C	96	104	Right-handed alpha
Helix 45	45	C	105	119	Right-handed alpha
Helix 46	46	C	135	139	Right-handed 310
Helix 47	47	C	175	181	Right-handed 310
Helix 48	48	C	232	248	Right-handed alpha
Helix 49	49	C	249	270	Right-handed alpha
Helix 50	50	C	280	310	Right-handed alpha
Helix 51	51	C	314	341	Right-handed alpha
Helix 52	52	C	342	349	Right-handed 310
Helix 53	53	C	350	361	Right-handed alpha
Helix 54	54	C	367	380	Right-handed alpha
Helix 55	55	D	6	24	Right-handed alpha
Helix 56	56	D	27	35	Right-handed alpha
Helix 57	57	D	38	49	Right-handed alpha
Helix 58	58	D	50	53	Right-handed 310
Helix 59	59	D	56	60	Right-handed 310
Helix 60	60	D	65	80	Right-handed alpha
Helix 61	61	D	82	96	Right-handed alpha
Helix 62	62	D	96	104	Right-handed alpha
Helix 63	63	D	105	119	Right-handed alpha
Helix 64	64	D	135	139	Right-handed 310
Helix 65	65	D	178	181	Right-handed 310
Helix 66	66	D	232	248	Right-handed alpha
Helix 67	67	D	249	270	Right-handed alpha
Helix 68	68	D	280	310	Right-handed alpha
Helix 69	69	D	314	341	Right-handed alpha
Helix 70	70	D	342	349	Right-handed 310
Helix 71	71	D	350	361	Right-handed alpha
Helix 72	72	D	367	380	Right-handed alpha
Helix 73	73	E	6	24	Right-handed alpha
Helix 74	74	E	27	35	Right-handed alpha
Helix 75	75	E	38	49	Right-handed alpha
Helix 76	76	E	50	53	Right-handed 310
Helix 77	77	E	56	60	Right-handed 310
Helix 78	78	E	65	80	Right-handed alpha
Helix 79	79	E	82	96	Right-handed alpha
Helix 80	80	E	96	104	Right-handed alpha
Helix 81	81	E	105	119	Right-handed alpha
Helix 82	82	E	135	139	Right-handed 310
Helix 83	83	E	175	181	Right-handed 310
Helix 84	84	E	232	248	Right-handed alpha
Helix 85	85	E	249	270	Right-handed alpha
Helix 86	86	E	280	310	Right-handed alpha
Helix 87	87	E	314	341	Right-handed alpha
Helix 88	88	E	342	349	Right-handed 310
Helix 89	89	E	350	360	Right-handed alpha
Helix 90	90	E	361	363	Right-handed 310
Helix 91	91	E	367	380	Right-handed alpha
Helix 92	92	F	6	24	Right-handed alpha
Helix 93	93	F	27	35	Right-handed alpha
Helix 94	94	F	38	49	Right-handed alpha
Helix 95	95	F	50	53	Right-handed 310
Helix 96	96	F	56	60	Right-handed 310
Helix 97	97	F	65	80	Right-handed alpha
Helix 98	98	F	82	96	Right-handed alpha
Helix 99	99	F	96	104	Right-handed alpha
Helix 100	100	F	105	119	Right-handed alpha
Helix 101	101	F	135	139	Right-handed 310
Helix 102	102	F	175	181	Right-handed 310
Helix 103	103	F	232	248	Right-handed alpha
Helix 104	104	F	249	270	Right-handed alpha
Helix 105	105	F	280	310	Right-handed alpha
Helix 106	106	F	314	341	Right-handed alpha
Helix 107	107	F	342	349	Right-handed 310
Helix 108	108	F	350	361	Right-handed alpha
Helix 109	109	F	367	380	Right-handed alpha
Helix 110	110	G	6	24	Right-handed alpha
Helix 111	111	G	27	35	Right-handed alpha
Helix 112	112	G	38	49	Right-handed alpha
Helix 113	113	G	50	53	Right-handed 310
Helix 114	114	G	56	60	Right-handed 310
Helix 115	115	G	65	80	Right-handed alpha
Helix 116	116	G	82	95	Right-handed alpha
Helix 117	117	G	96	104	Right-handed alpha
Helix 118	118	G	105	119	Right-handed alpha
Helix 119	119	G	135	139	Right-handed 310
Helix 120	120	G	178	181	Right-handed 310
Helix 121	121	G	232	248	Right-handed alpha
Helix 122	122	G	249	270	Right-handed alpha
Helix 123	123	G	280	310	Right-handed alpha
Helix 124	124	G	314	341	Right-handed alpha
Helix 125	125	G	342	349	Right-handed 310
Helix 126	126	G	350	361	Right-handed alpha
Helix 127	127	G	367	380	Right-handed alpha
Helix 128	128	H	6	24	Right-handed alpha
Helix 129	129	H	27	35	Right-handed alpha
Helix 130	130	H	38	49	Right-handed alpha
Helix 131	131	H	50	53	Right-handed 310
Helix 132	132	H	56	60	Right-handed 310
Helix 133	133	H	65	80	Right-handed alpha
Helix 134	134	H	82	96	Right-handed alpha
Helix 135	135	H	96	104	Right-handed alpha
Helix 136	136	H	105	118	Right-handed alpha
Helix 137	137	H	135	139	Right-handed 310
Helix 138	138	H	175	181	Right-handed 310
Helix 139	139	H	232	248	Right-handed alpha
Helix 140	140	H	251	270	Right-handed alpha
Helix 141	141	H	280	310	Right-handed alpha
Helix 142	142	H	314	341	Right-handed alpha
Helix 143	143	H	342	349	Right-handed 310
Helix 144	144	H	350	360	Right-handed alpha
Helix 145	145	H	361	363	Right-handed 310
Helix 146	146	H	367	380	Right-handed alpha

There are 24 sheets in PDB entry 4IRN. 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,

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	123	126	first strand
Strand 2	A	167	173	parallel
Strand 3	A	183	189	anti-parallel
Strand 4	A	226	227	anti-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	142	146	first strand
Strand 2	A	149	156	anti-parallel
Strand 3	A	214	222	anti-parallel
Strand 4	A	195	197	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	271	272	first strand
Strand 2	A	275	276	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	B	123	126	first strand
Strand 2	B	167	173	parallel
Strand 3	B	183	189	anti-parallel
Strand 4	B	226	227	anti-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	142	146	first strand
Strand 2	B	149	156	anti-parallel
Strand 3	B	214	222	anti-parallel
Strand 4	B	195	197	anti-parallel

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There are 2 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	271	272	first strand
Strand 2	B	275	276	anti-parallel

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There are 4 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	123	126	first strand
Strand 2	C	167	173	parallel
Strand 3	C	183	189	anti-parallel
Strand 4	C	226	227	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	C	142	146	first strand
Strand 2	C	149	156	anti-parallel
Strand 3	C	214	222	anti-parallel
Strand 4	C	195	197	anti-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	271	272	first strand
Strand 2	C	275	276	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	D	123	126	first strand
Strand 2	D	167	173	parallel
Strand 3	D	183	189	anti-parallel
Strand 4	D	226	227	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	D	142	146	first strand
Strand 2	D	149	156	anti-parallel
Strand 3	D	214	222	anti-parallel
Strand 4	D	195	197	anti-parallel

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There are 2 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	271	272	first strand
Strand 2	D	275	276	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	126	first strand
Strand 2	E	167	173	parallel
Strand 3	E	183	189	anti-parallel
Strand 4	E	226	227	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	E	142	146	first strand
Strand 2	E	149	156	anti-parallel
Strand 3	E	214	222	anti-parallel
Strand 4	E	195	197	anti-parallel

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There are 2 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	271	272	first strand
Strand 2	E	275	276	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	F	123	126	first strand
Strand 2	F	167	173	parallel
Strand 3	F	183	189	anti-parallel
Strand 4	F	226	227	anti-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	142	146	first strand
Strand 2	F	149	156	anti-parallel
Strand 3	F	214	222	anti-parallel
Strand 4	F	195	197	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	F	271	272	first strand
Strand 2	F	275	276	anti-parallel

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There are 4 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	123	126	first strand
Strand 2	G	167	173	parallel
Strand 3	G	183	189	anti-parallel
Strand 4	G	226	227	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	G	142	146	first strand
Strand 2	G	149	156	anti-parallel
Strand 3	G	214	222	anti-parallel
Strand 4	G	195	197	anti-parallel

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There are 2 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	271	272	first strand
Strand 2	G	275	276	anti-parallel

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There are 4 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	123	126	first strand
Strand 2	H	167	173	parallel
Strand 3	H	183	189	anti-parallel
Strand 4	H	226	227	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	H	142	146	first strand
Strand 2	H	149	156	anti-parallel
Strand 3	H	214	222	anti-parallel
Strand 4	H	195	197	anti-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	H	271	272	first strand
Strand 2	H	275	276	anti-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: 4IRN

Analysis of interatomic Contacts of Structural Units in PDB entry:
4IRN