Analysis of interatomic Contacts of Structural Units in PDB entry:
3IR1

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 3IR1 entry

There are 6 chains in PDB entry 3IR1 (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	LYS 43	TRP 281
B	LYS 43	ALA 286
C	LYS 43	TRP 281
D	LYS 43	TRP 281
E	LYS 43	TRP 281
F	LYS 43	ALA 286

There are 89 helices in PDB entry 3IR1. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	52	61	Right-handed alpha
Helix 2	2	A	61	68	Right-handed alpha
Helix 3	3	A	82	91	Right-handed alpha
Helix 4	4	A	100	112	Right-handed alpha
Helix 5	5	A	135	139	Right-handed 310
Helix 6	6	A	150	164	Right-handed alpha
Helix 7	7	A	174	178	Right-handed 310
Helix 8	8	A	179	181	Right-handed 310
Helix 9	9	A	196	206	Right-handed 310
Helix 10	10	A	213	220	Right-handed alpha
Helix 11	11	A	223	227	Right-handed 310
Helix 12	12	A	245	247	Right-handed 310
Helix 13	13	A	249	259	Right-handed alpha
Helix 14	14	A	261	272	Right-handed alpha
Helix 15	15	B	52	61	Right-handed alpha
Helix 16	16	B	61	68	Right-handed alpha
Helix 17	17	B	82	91	Right-handed alpha
Helix 18	18	B	100	111	Right-handed alpha
Helix 19	19	B	135	139	Right-handed 310
Helix 20	20	B	150	164	Right-handed alpha
Helix 21	21	B	174	178	Right-handed 310
Helix 22	22	B	179	181	Right-handed 310
Helix 23	23	B	196	206	Right-handed 310
Helix 24	24	B	213	220	Right-handed alpha
Helix 25	25	B	223	227	Right-handed 310
Helix 26	26	B	245	247	Right-handed 310
Helix 27	27	B	249	259	Right-handed alpha
Helix 28	28	B	261	272	Right-handed alpha
Helix 29	29	B	278	282	Right-handed 310
Helix 30	30	C	52	61	Right-handed alpha
Helix 31	31	C	61	68	Right-handed alpha
Helix 32	32	C	82	90	Right-handed alpha
Helix 33	33	C	100	112	Right-handed alpha
Helix 34	34	C	135	139	Right-handed 310
Helix 35	35	C	150	164	Right-handed alpha
Helix 36	36	C	174	178	Right-handed 310
Helix 37	37	C	179	181	Right-handed 310
Helix 38	38	C	196	198	Right-handed 310
Helix 39	39	C	199	204	Right-handed alpha
Helix 40	40	C	213	220	Right-handed alpha
Helix 41	41	C	223	227	Right-handed 310
Helix 42	42	C	245	247	Right-handed 310
Helix 43	43	C	249	259	Right-handed alpha
Helix 44	44	C	261	272	Right-handed alpha
Helix 45	45	D	52	61	Right-handed alpha
Helix 46	46	D	61	68	Right-handed alpha
Helix 47	47	D	82	90	Right-handed alpha
Helix 48	48	D	100	111	Right-handed alpha
Helix 49	49	D	135	139	Right-handed 310
Helix 50	50	D	150	164	Right-handed alpha
Helix 51	51	D	174	178	Right-handed 310
Helix 52	52	D	179	181	Right-handed 310
Helix 53	53	D	196	198	Right-handed 310
Helix 54	54	D	199	204	Right-handed alpha
Helix 55	55	D	213	220	Right-handed alpha
Helix 56	56	D	223	227	Right-handed 310
Helix 57	57	D	245	247	Right-handed 310
Helix 58	58	D	249	259	Right-handed alpha
Helix 59	59	D	261	272	Right-handed alpha
Helix 60	60	E	52	61	Right-handed alpha
Helix 61	61	E	61	68	Right-handed alpha
Helix 62	62	E	82	90	Right-handed alpha
Helix 63	63	E	100	112	Right-handed alpha
Helix 64	64	E	135	139	Right-handed 310
Helix 65	65	E	150	164	Right-handed alpha
Helix 66	66	E	174	178	Right-handed 310
Helix 67	67	E	179	181	Right-handed 310
Helix 68	68	E	196	204	Right-handed 310
Helix 69	69	E	213	220	Right-handed alpha
Helix 70	70	E	223	227	Right-handed 310
Helix 71	71	E	245	247	Right-handed 310
Helix 72	72	E	249	259	Right-handed alpha
Helix 73	73	E	261	272	Right-handed alpha
Helix 74	74	F	52	61	Right-handed alpha
Helix 75	75	F	61	68	Right-handed alpha
Helix 76	76	F	82	91	Right-handed alpha
Helix 77	77	F	100	112	Right-handed alpha
Helix 78	78	F	150	164	Right-handed alpha
Helix 79	79	F	174	178	Right-handed 310
Helix 80	80	F	179	181	Right-handed 310
Helix 81	81	F	196	198	Right-handed 310
Helix 82	82	F	199	204	Right-handed alpha
Helix 83	83	F	205	207	Right-handed 310
Helix 84	84	F	213	220	Right-handed alpha
Helix 85	85	F	223	227	Right-handed 310
Helix 86	86	F	245	247	Right-handed 310
Helix 87	87	F	249	259	Right-handed alpha
Helix 88	88	F	261	272	Right-handed alpha
Helix 89	89	F	278	282	Right-handed 310

There are 18 sheets in PDB entry 3IR1. 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 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	72	78	first strand
Strand 2	A	44	50	parallel
Strand 3	A	95	99	parallel
Strand 4	A	239	243	anti-parallel
Strand 5	A	115	120	anti-parallel

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There are 5 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	191	195	first strand
Strand 2	A	144	148	parallel
Strand 3	A	209	212	parallel
Strand 4	A	127	130	anti-parallel
Strand 5	A	229	230	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	168	169	first strand
Strand 2	A	183	185	anti-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	72	78	first strand
Strand 2	B	44	50	parallel
Strand 3	B	95	99	parallel
Strand 4	B	239	243	anti-parallel
Strand 5	B	115	120	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	191	195	first strand
Strand 2	B	144	148	parallel
Strand 3	B	209	212	parallel
Strand 4	B	127	130	anti-parallel
Strand 5	B	229	230	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	168	169	first strand
Strand 2	B	183	185	anti-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	72	78	first strand
Strand 2	C	44	50	parallel
Strand 3	C	95	99	parallel
Strand 4	C	239	243	anti-parallel
Strand 5	C	115	120	anti-parallel

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There are 5 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	191	195	first strand
Strand 2	C	144	148	parallel
Strand 3	C	209	212	parallel
Strand 4	C	127	130	anti-parallel
Strand 5	C	229	230	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	168	169	first strand
Strand 2	C	183	185	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	72	78	first strand
Strand 2	D	44	50	parallel
Strand 3	D	95	99	parallel
Strand 4	D	239	243	anti-parallel
Strand 5	D	115	120	anti-parallel

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There are 5 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	191	195	first strand
Strand 2	D	144	148	parallel
Strand 3	D	209	212	parallel
Strand 4	D	127	130	anti-parallel
Strand 5	D	229	230	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	168	169	first strand
Strand 2	D	183	185	anti-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	72	78	first strand
Strand 2	E	44	50	parallel
Strand 3	E	95	99	parallel
Strand 4	E	239	243	anti-parallel
Strand 5	E	115	120	anti-parallel

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There are 5 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	191	195	first strand
Strand 2	E	144	148	parallel
Strand 3	E	209	212	parallel
Strand 4	E	127	130	anti-parallel
Strand 5	E	229	230	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	168	169	first strand
Strand 2	E	183	185	anti-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	72	78	first strand
Strand 2	F	44	50	parallel
Strand 3	F	95	99	parallel
Strand 4	F	239	243	anti-parallel
Strand 5	F	115	120	anti-parallel

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There are 5 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	191	195	first strand
Strand 2	F	144	148	parallel
Strand 3	F	209	212	parallel
Strand 4	F	127	130	anti-parallel
Strand 5	F	229	230	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	168	169	first strand
Strand 2	F	183	185	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: 3IR1

Analysis of interatomic Contacts of Structural Units in PDB entry:
3IR1