Analysis of interatomic Contacts of Structural Units in PDB entry:
2I3O

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 2I3O entry

There are 4 chains in PDB entry 2I3O (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	MSE 1	SER 516
B	PHE 2	SER 516
C	PHE 2	SER 516
D	MSE 1	SER 516

There are 86 helices in PDB entry 2I3O. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	19	32	Right-handed alpha
Helix 2	2	A	35	51	Right-handed alpha
Helix 3	3	A	86	92	Right-handed alpha
Helix 4	4	A	111	124	Right-handed alpha
Helix 5	5	A	127	142	Right-handed alpha
Helix 6	6	A	146	161	Right-handed alpha
Helix 7	7	A	163	171	Right-handed alpha
Helix 8	8	A	185	199	Right-handed alpha
Helix 9	9	A	201	206	Right-handed alpha
Helix 10	10	A	206	215	Right-handed alpha
Helix 11	11	A	224	231	Right-handed alpha
Helix 12	12	A	257	270	Right-handed alpha
Helix 13	13	A	276	280	Right-handed 310
Helix 14	14	A	281	297	Right-handed alpha
Helix 15	15	A	301	305	Right-handed 310
Helix 16	16	A	369	374	Right-handed 310
Helix 17	17	A	416	429	Right-handed alpha
Helix 18	18	A	434	441	Right-handed alpha
Helix 19	19	A	461	472	Right-handed alpha
Helix 20	20	A	483	487	Right-handed 310
Helix 21	21	A	496	498	Right-handed 310
Helix 22	22	B	19	32	Right-handed alpha
Helix 23	23	B	35	51	Right-handed alpha
Helix 24	24	B	86	94	Right-handed alpha
Helix 25	25	B	111	124	Right-handed alpha
Helix 26	26	B	127	142	Right-handed alpha
Helix 27	27	B	146	161	Right-handed alpha
Helix 28	28	B	163	171	Right-handed alpha
Helix 29	29	B	185	199	Right-handed alpha
Helix 30	30	B	201	206	Right-handed alpha
Helix 31	31	B	206	215	Right-handed alpha
Helix 32	32	B	224	231	Right-handed alpha
Helix 33	33	B	257	269	Right-handed alpha
Helix 34	34	B	276	280	Right-handed 310
Helix 35	35	B	281	296	Right-handed alpha
Helix 36	36	B	297	299	Right-handed 310
Helix 37	37	B	301	305	Right-handed 310
Helix 38	38	B	369	374	Right-handed 310
Helix 39	39	B	416	429	Right-handed alpha
Helix 40	40	B	434	441	Right-handed alpha
Helix 41	41	B	461	472	Right-handed alpha
Helix 42	42	B	483	487	Right-handed 310
Helix 43	43	B	496	498	Right-handed 310
Helix 44	44	C	19	32	Right-handed alpha
Helix 45	45	C	35	51	Right-handed alpha
Helix 46	46	C	86	94	Right-handed alpha
Helix 47	47	C	111	124	Right-handed alpha
Helix 48	48	C	127	142	Right-handed alpha
Helix 49	49	C	146	161	Right-handed alpha
Helix 50	50	C	163	171	Right-handed alpha
Helix 51	51	C	185	199	Right-handed alpha
Helix 52	52	C	201	206	Right-handed alpha
Helix 53	53	C	206	215	Right-handed alpha
Helix 54	54	C	224	231	Right-handed alpha
Helix 55	55	C	257	270	Right-handed alpha
Helix 56	56	C	276	280	Right-handed 310
Helix 57	57	C	281	297	Right-handed alpha
Helix 58	58	C	301	305	Right-handed 310
Helix 59	59	C	369	374	Right-handed 310
Helix 60	60	C	416	431	Right-handed alpha
Helix 61	61	C	434	441	Right-handed alpha
Helix 62	62	C	461	472	Right-handed alpha
Helix 63	63	C	483	487	Right-handed 310
Helix 64	64	C	496	498	Right-handed 310
Helix 65	65	D	19	32	Right-handed alpha
Helix 66	66	D	35	51	Right-handed alpha
Helix 67	67	D	86	93	Right-handed alpha
Helix 68	68	D	111	124	Right-handed alpha
Helix 69	69	D	127	142	Right-handed alpha
Helix 70	70	D	146	161	Right-handed alpha
Helix 71	71	D	163	171	Right-handed alpha
Helix 72	72	D	185	199	Right-handed alpha
Helix 73	73	D	201	206	Right-handed alpha
Helix 74	74	D	206	215	Right-handed alpha
Helix 75	75	D	224	230	Right-handed alpha
Helix 76	76	D	257	270	Right-handed alpha
Helix 77	77	D	276	280	Right-handed 310
Helix 78	78	D	281	296	Right-handed alpha
Helix 79	79	D	297	299	Right-handed 310
Helix 80	80	D	311	315	Right-handed 310
Helix 81	81	D	369	374	Right-handed 310
Helix 82	82	D	416	431	Right-handed alpha
Helix 83	83	D	434	441	Right-handed alpha
Helix 84	84	D	461	472	Right-handed alpha
Helix 85	85	D	483	487	Right-handed 310
Helix 86	86	D	496	498	Right-handed 310

There are 16 sheets in PDB entry 2I3O. 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,

There are 7 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	8	10	first strand
Strand 2	A	499	504	anti-parallel
Strand 3	A	489	495	anti-parallel
Strand 4	A	404	411	anti-parallel
Strand 5	A	397	401	anti-parallel
Strand 6	A	246	250	anti-parallel
Strand 7	A	239	243	anti-parallel

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There are 7 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	234	236	first strand
Strand 2	A	72	77	anti-parallel
Strand 3	A	60	66	anti-parallel
Strand 4	A	343	351	anti-parallel
Strand 5	A	330	338	anti-parallel
Strand 6	A	13	17	anti-parallel
Strand 7	A	511	515	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	143	144	first strand
Strand 2	A	182	183	anti-parallel

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There are 3 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	444	445	first strand
Strand 2	A	457	459	anti-parallel
Strand 3	A	477	479	parallel

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There are 7 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	8	10	first strand
Strand 2	B	499	504	anti-parallel
Strand 3	B	488	495	anti-parallel
Strand 4	B	404	412	anti-parallel
Strand 5	B	397	401	anti-parallel
Strand 6	B	246	250	anti-parallel
Strand 7	B	239	243	anti-parallel

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There are 7 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	234	236	first strand
Strand 2	B	72	77	anti-parallel
Strand 3	B	60	66	anti-parallel
Strand 4	B	343	351	anti-parallel
Strand 5	B	330	338	anti-parallel
Strand 6	B	13	17	anti-parallel
Strand 7	B	511	515	anti-parallel

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There are 2 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	143	144	first strand
Strand 2	B	182	183	anti-parallel

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There are 3 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	444	445	first strand
Strand 2	B	457	459	anti-parallel
Strand 3	B	477	479	parallel

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There are 7 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	8	10	first strand
Strand 2	C	499	504	anti-parallel
Strand 3	C	489	495	anti-parallel
Strand 4	C	404	411	anti-parallel
Strand 5	C	397	401	anti-parallel
Strand 6	C	246	250	anti-parallel
Strand 7	C	239	243	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	234	236	first strand
Strand 2	C	72	77	anti-parallel
Strand 3	C	60	66	anti-parallel
Strand 4	C	343	351	anti-parallel
Strand 5	C	330	338	anti-parallel
Strand 6	C	13	17	anti-parallel
Strand 7	C	511	515	anti-parallel

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There are 2 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	143	144	first strand
Strand 2	C	182	183	anti-parallel

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There are 3 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	444	445	first strand
Strand 2	C	457	459	anti-parallel
Strand 3	C	477	479	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	8	10	first strand
Strand 2	D	499	504	anti-parallel
Strand 3	D	489	495	anti-parallel
Strand 4	D	404	411	anti-parallel
Strand 5	D	397	401	anti-parallel
Strand 6	D	246	250	anti-parallel
Strand 7	D	239	243	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	234	236	first strand
Strand 2	D	72	77	anti-parallel
Strand 3	D	60	66	anti-parallel
Strand 4	D	343	351	anti-parallel
Strand 5	D	330	338	anti-parallel
Strand 6	D	13	17	anti-parallel
Strand 7	D	511	515	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	D	143	144	first strand
Strand 2	D	182	183	anti-parallel

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There are 3 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	444	445	first strand
Strand 2	D	457	459	anti-parallel
Strand 3	D	477	479	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: 2I3O

Analysis of interatomic Contacts of Structural Units in PDB entry:
2I3O