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

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 3IRM entry

There are 4 chains in PDB entry 3IRM (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	MET 1	ALA 520
B	LEU 3	VAL 521
C	SER 2	MET 517
D	LEU 3	ILE 515

There are 90 helices in PDB entry 3IRM. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	1	5	Right-handed 310
Helix 2	2	A	13	17	Right-handed 310
Helix 3	3	A	45	58	Right-handed alpha
Helix 4	4	A	78	83	Right-handed alpha
Helix 5	5	A	85	89	Right-handed 310
Helix 6	6	A	104	111	Right-handed alpha
Helix 7	7	A	114	122	Right-handed alpha
Helix 8	8	A	131	140	Right-handed alpha
Helix 9	9	A	156	164	Right-handed alpha
Helix 10	10	A	167	170	Right-handed 310
Helix 11	11	A	198	202	Right-handed 310
Helix 12	12	A	234	251	Right-handed alpha
Helix 13	13	A	275	278	Right-handed 310
Helix 14	14	A	288	301	Right-handed alpha
Helix 15	15	A	306	311	Right-handed alpha
Helix 16	16	A	322	329	Right-handed alpha
Helix 17	17	A	342	350	Right-handed alpha
Helix 18	18	A	367	379	Right-handed alpha
Helix 19	19	A	394	398	Right-handed 310
Helix 20	20	A	429	449	Right-handed alpha
Helix 21	21	A	469	477	Right-handed alpha
Helix 22	22	A	495	499	Right-handed 310
Helix 23	23	A	500	502	Right-handed 310
Helix 24	24	B	13	17	Right-handed 310
Helix 25	25	B	45	58	Right-handed alpha
Helix 26	26	B	78	83	Right-handed alpha
Helix 27	27	B	85	89	Right-handed 310
Helix 28	28	B	104	111	Right-handed alpha
Helix 29	29	B	131	139	Right-handed alpha
Helix 30	30	B	156	164	Right-handed alpha
Helix 31	31	B	167	170	Right-handed 310
Helix 32	32	B	198	202	Right-handed 310
Helix 33	33	B	234	251	Right-handed alpha
Helix 34	34	B	275	278	Right-handed 310
Helix 35	35	B	288	301	Right-handed alpha
Helix 36	36	B	306	311	Right-handed alpha
Helix 37	37	B	318	321	Right-handed 310
Helix 38	38	B	322	329	Right-handed alpha
Helix 39	39	B	343	350	Right-handed alpha
Helix 40	40	B	367	379	Right-handed alpha
Helix 41	41	B	394	398	Right-handed 310
Helix 42	42	B	429	449	Right-handed alpha
Helix 43	43	B	469	477	Right-handed alpha
Helix 44	44	B	495	499	Right-handed 310
Helix 45	45	B	500	502	Right-handed 310
Helix 46	46	C	13	17	Right-handed 310
Helix 47	47	C	45	58	Right-handed alpha
Helix 48	48	C	78	83	Right-handed alpha
Helix 49	49	C	85	89	Right-handed 310
Helix 50	50	C	104	111	Right-handed alpha
Helix 51	51	C	114	121	Right-handed alpha
Helix 52	52	C	131	140	Right-handed alpha
Helix 53	53	C	156	164	Right-handed alpha
Helix 54	54	C	167	170	Right-handed 310
Helix 55	55	C	234	251	Right-handed alpha
Helix 56	56	C	275	278	Right-handed 310
Helix 57	57	C	288	301	Right-handed alpha
Helix 58	58	C	306	311	Right-handed alpha
Helix 59	59	C	318	321	Right-handed 310
Helix 60	60	C	322	329	Right-handed alpha
Helix 61	61	C	342	350	Right-handed alpha
Helix 62	62	C	367	379	Right-handed alpha
Helix 63	63	C	394	398	Right-handed 310
Helix 64	64	C	429	449	Right-handed alpha
Helix 65	65	C	469	477	Right-handed alpha
Helix 66	66	C	495	499	Right-handed 310
Helix 67	67	C	500	502	Right-handed 310
Helix 68	68	D	13	17	Right-handed 310
Helix 69	69	D	45	58	Right-handed alpha
Helix 70	70	D	78	83	Right-handed alpha
Helix 71	71	D	85	89	Right-handed 310
Helix 72	72	D	104	111	Right-handed alpha
Helix 73	73	D	116	121	Right-handed alpha
Helix 74	74	D	131	141	Right-handed alpha
Helix 75	75	D	156	164	Right-handed alpha
Helix 76	76	D	167	170	Right-handed 310
Helix 77	77	D	198	202	Right-handed 310
Helix 78	78	D	234	251	Right-handed alpha
Helix 79	79	D	275	278	Right-handed 310
Helix 80	80	D	288	301	Right-handed alpha
Helix 81	81	D	306	311	Right-handed alpha
Helix 82	82	D	317	322	Right-handed alpha
Helix 83	83	D	322	328	Right-handed alpha
Helix 84	84	D	342	350	Right-handed alpha
Helix 85	85	D	367	379	Right-handed alpha
Helix 86	86	D	394	398	Right-handed 310
Helix 87	87	D	429	449	Right-handed alpha
Helix 88	88	D	469	477	Right-handed alpha
Helix 89	89	D	495	499	Right-handed 310
Helix 90	90	D	500	502	Right-handed 310

There are 18 sheets in PDB entry 3IRM. 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,

There are 8 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	125	128	first strand
Strand 2	A	94	99	parallel
Strand 3	A	71	77	parallel
Strand 4	A	148	153	parallel
Strand 5	A	23	30	parallel
Strand 6	A	172	180	parallel
Strand 7	A	224	232	anti-parallel
Strand 8	A	206	211	anti-parallel

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There are 8 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	125	128	first strand
Strand 2	A	94	99	parallel
Strand 3	A	71	77	parallel
Strand 4	A	148	153	parallel
Strand 5	A	23	30	parallel
Strand 6	A	172	180	parallel
Strand 7	A	224	232	anti-parallel
Strand 8	A	215	216	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	34	36	first strand
Strand 2	A	189	190	anti-parallel

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There are 6 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	252	255	first strand
Strand 2	A	261	273	anti-parallel
Strand 3	A	452	466	anti-parallel
Strand 4	A	415	426	parallel
Strand 5	A	404	412	anti-parallel
Strand 6	A	386	388	anti-parallel

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There are 2 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	486	489	first strand
Strand 2	A	504	507	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	125	128	first strand
Strand 2	B	94	99	parallel
Strand 3	B	71	77	parallel
Strand 4	B	148	153	parallel
Strand 5	B	23	30	parallel
Strand 6	B	172	180	parallel
Strand 7	B	224	232	anti-parallel
Strand 8	B	206	211	anti-parallel

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There are 8 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	125	128	first strand
Strand 2	B	94	99	parallel
Strand 3	B	71	77	parallel
Strand 4	B	148	153	parallel
Strand 5	B	23	30	parallel
Strand 6	B	172	180	parallel
Strand 7	B	224	232	anti-parallel
Strand 8	B	215	216	anti-parallel

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There are 2 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	34	36	first strand
Strand 2	B	189	190	anti-parallel

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There are 6 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	252	255	first strand
Strand 2	B	261	273	anti-parallel
Strand 3	B	452	466	anti-parallel
Strand 4	B	415	426	parallel
Strand 5	B	404	412	anti-parallel
Strand 6	B	386	388	anti-parallel

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There are 2 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	486	489	first strand
Strand 2	B	504	507	anti-parallel

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There are 8 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	125	128	first strand
Strand 2	C	94	99	parallel
Strand 3	C	71	77	parallel
Strand 4	C	148	153	parallel
Strand 5	C	23	30	parallel
Strand 6	C	172	180	parallel
Strand 7	C	224	232	anti-parallel
Strand 8	C	206	211	anti-parallel

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There are 8 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	125	128	first strand
Strand 2	C	94	99	parallel
Strand 3	C	71	77	parallel
Strand 4	C	148	153	parallel
Strand 5	C	23	30	parallel
Strand 6	C	172	180	parallel
Strand 7	C	224	232	anti-parallel
Strand 8	C	215	216	anti-parallel

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There are 6 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	252	255	first strand
Strand 2	C	261	273	anti-parallel
Strand 3	C	452	466	anti-parallel
Strand 4	C	415	426	parallel
Strand 5	C	404	412	anti-parallel
Strand 6	C	386	388	anti-parallel

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There are 2 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	486	489	first strand
Strand 2	C	504	507	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	125	128	first strand
Strand 2	D	94	99	parallel
Strand 3	D	71	77	parallel
Strand 4	D	148	155	parallel
Strand 5	D	23	30	parallel
Strand 6	D	172	180	parallel
Strand 7	D	224	232	anti-parallel
Strand 8	D	206	211	anti-parallel

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There are 8 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	125	128	first strand
Strand 2	D	94	99	parallel
Strand 3	D	71	77	parallel
Strand 4	D	148	155	parallel
Strand 5	D	23	30	parallel
Strand 6	D	172	180	parallel
Strand 7	D	224	232	anti-parallel
Strand 8	D	215	216	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	252	255	first strand
Strand 2	D	261	273	anti-parallel
Strand 3	D	452	466	anti-parallel
Strand 4	D	415	426	parallel
Strand 5	D	404	412	anti-parallel
Strand 6	D	386	388	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	D	486	489	first strand
Strand 2	D	504	507	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: 3IRM

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