Analysis of interatomic Contacts of Structural Units in PDB entry:
3S2I

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 3S2I entry

There are 8 chains in PDB entry 3S2I (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	ALA 3	ARG 342
B	ALA 3	ARG 342
C	ALA 3	ARG 342
D	ALA 3	ARG 342
E	ALA 3	ARG 342
F	ALA 3	ARG 342
G	ALA 3	ARG 342
H	ALA 3	ARG 342

There are112 helices in PDB entry 3S2I. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	42	51	Right-handed alpha
Helix 2	2	A	99	104	Right-handed alpha
Helix 3	3	A	105	110	Right-handed 310
Helix 4	4	A	143	148	Right-handed alpha
Helix 5	5	A	149	151	Right-handed 310
Helix 6	6	A	152	163	Right-handed alpha
Helix 7	7	A	180	191	Right-handed alpha
Helix 8	8	A	201	211	Right-handed alpha
Helix 9	9	A	223	232	Right-handed alpha
Helix 10	10	A	244	254	Right-handed alpha
Helix 11	11	A	275	281	Right-handed alpha
Helix 12	12	A	292	305	Right-handed alpha
Helix 13	13	A	316	318	Right-handed 310
Helix 14	14	A	319	329	Right-handed alpha
Helix 15	15	B	42	51	Right-handed alpha
Helix 16	16	B	99	104	Right-handed alpha
Helix 17	17	B	106	110	Right-handed 310
Helix 18	18	B	143	148	Right-handed alpha
Helix 19	19	B	149	151	Right-handed 310
Helix 20	20	B	152	163	Right-handed alpha
Helix 21	21	B	180	191	Right-handed alpha
Helix 22	22	B	201	211	Right-handed alpha
Helix 23	23	B	223	233	Right-handed alpha
Helix 24	24	B	244	254	Right-handed alpha
Helix 25	25	B	275	281	Right-handed alpha
Helix 26	26	B	292	305	Right-handed alpha
Helix 27	27	B	316	318	Right-handed 310
Helix 28	28	B	319	329	Right-handed alpha
Helix 29	29	C	42	51	Right-handed alpha
Helix 30	30	C	99	104	Right-handed alpha
Helix 31	31	C	105	110	Right-handed 310
Helix 32	32	C	143	148	Right-handed alpha
Helix 33	33	C	149	151	Right-handed 310
Helix 34	34	C	152	163	Right-handed alpha
Helix 35	35	C	180	191	Right-handed alpha
Helix 36	36	C	201	211	Right-handed alpha
Helix 37	37	C	223	233	Right-handed alpha
Helix 38	38	C	244	254	Right-handed alpha
Helix 39	39	C	275	281	Right-handed alpha
Helix 40	40	C	292	305	Right-handed alpha
Helix 41	41	C	316	318	Right-handed 310
Helix 42	42	C	319	330	Right-handed alpha
Helix 43	43	D	42	51	Right-handed alpha
Helix 44	44	D	101	105	Right-handed 310
Helix 45	45	D	106	110	Right-handed 310
Helix 46	46	D	143	148	Right-handed alpha
Helix 47	47	D	149	151	Right-handed 310
Helix 48	48	D	152	164	Right-handed alpha
Helix 49	49	D	180	191	Right-handed alpha
Helix 50	50	D	201	211	Right-handed alpha
Helix 51	51	D	223	233	Right-handed alpha
Helix 52	52	D	244	254	Right-handed alpha
Helix 53	53	D	275	282	Right-handed alpha
Helix 54	54	D	292	305	Right-handed alpha
Helix 55	55	D	316	318	Right-handed 310
Helix 56	56	D	319	330	Right-handed alpha
Helix 57	57	E	42	50	Right-handed alpha
Helix 58	58	E	99	104	Right-handed alpha
Helix 59	59	E	106	110	Right-handed 310
Helix 60	60	E	143	148	Right-handed alpha
Helix 61	61	E	149	151	Right-handed 310
Helix 62	62	E	152	163	Right-handed alpha
Helix 63	63	E	178	191	Right-handed alpha
Helix 64	64	E	201	211	Right-handed alpha
Helix 65	65	E	223	231	Right-handed alpha
Helix 66	66	E	249	254	Right-handed alpha
Helix 67	67	E	275	281	Right-handed alpha
Helix 68	68	E	292	305	Right-handed alpha
Helix 69	69	E	316	318	Right-handed 310
Helix 70	70	E	319	329	Right-handed alpha
Helix 71	71	F	42	50	Right-handed alpha
Helix 72	72	F	99	104	Right-handed alpha
Helix 73	73	F	106	110	Right-handed 310
Helix 74	74	F	143	148	Right-handed alpha
Helix 75	75	F	149	151	Right-handed 310
Helix 76	76	F	152	163	Right-handed alpha
Helix 77	77	F	178	191	Right-handed alpha
Helix 78	78	F	201	211	Right-handed alpha
Helix 79	79	F	223	231	Right-handed alpha
Helix 80	80	F	250	253	Right-handed 310
Helix 81	81	F	275	281	Right-handed alpha
Helix 82	82	F	292	305	Right-handed alpha
Helix 83	83	F	316	318	Right-handed 310
Helix 84	84	F	319	329	Right-handed alpha
Helix 85	85	G	42	50	Right-handed alpha
Helix 86	86	G	99	104	Right-handed alpha
Helix 87	87	G	105	110	Right-handed 310
Helix 88	88	G	143	148	Right-handed alpha
Helix 89	89	G	149	151	Right-handed 310
Helix 90	90	G	152	163	Right-handed alpha
Helix 91	91	G	178	191	Right-handed alpha
Helix 92	92	G	201	211	Right-handed alpha
Helix 93	93	G	223	233	Right-handed alpha
Helix 94	94	G	244	252	Right-handed alpha
Helix 95	95	G	275	281	Right-handed alpha
Helix 96	96	G	292	305	Right-handed alpha
Helix 97	97	G	316	318	Right-handed 310
Helix 98	98	G	319	329	Right-handed alpha
Helix 99	99	H	43	51	Right-handed alpha
Helix 100	100	H	99	104	Right-handed alpha
Helix 101	101	H	106	110	Right-handed 310
Helix 102	102	H	143	148	Right-handed alpha
Helix 103	103	H	149	151	Right-handed 310
Helix 104	104	H	152	163	Right-handed alpha
Helix 105	105	H	180	191	Right-handed alpha
Helix 106	106	H	201	212	Right-handed alpha
Helix 107	107	H	223	233	Right-handed alpha
Helix 108	108	H	244	252	Right-handed alpha
Helix 109	109	H	275	281	Right-handed alpha
Helix 110	110	H	292	305	Right-handed alpha
Helix 111	111	H	316	318	Right-handed 310
Helix 112	112	H	319	330	Right-handed alpha

There are 40 sheets in PDB entry 3S2I. 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, AK, AL, AM, AN,

There are 2 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	4	9	first strand
Strand 2	A	18	23	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	127	130	first strand
Strand 2	A	32	41	anti-parallel
Strand 3	A	67	74	anti-parallel
Strand 4	A	86	89	anti-parallel
Strand 5	A	136	137	anti-parallel

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There are 4 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	127	130	first strand
Strand 2	A	32	41	anti-parallel
Strand 3	A	335	339	anti-parallel
Strand 4	A	312	315	parallel

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There are 2 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	92	94	first strand
Strand 2	A	114	115	anti-parallel

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There are 12 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	215	218	first strand
Strand 2	A	194	199	parallel
Strand 3	A	171	175	parallel
Strand 4	A	235	240	parallel
Strand 5	A	255	263	parallel
Strand 6	A	284	287	parallel
Strand 7	G	284	287	anti-parallel
Strand 8	G	255	263	parallel
Strand 9	G	235	240	parallel
Strand 10	G	171	175	parallel
Strand 11	G	194	199	parallel
Strand 12	G	215	218	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	A	270	274	first strand
Strand 2	G	270	274	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	4	9	first strand
Strand 2	B	18	23	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	B	127	130	first strand
Strand 2	B	32	41	anti-parallel
Strand 3	B	67	74	anti-parallel
Strand 4	B	86	89	anti-parallel
Strand 5	B	136	137	anti-parallel

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There are 4 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	127	130	first strand
Strand 2	B	32	41	anti-parallel
Strand 3	B	335	339	anti-parallel
Strand 4	B	312	315	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	92	94	first strand
Strand 2	B	114	115	anti-parallel

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There are 12 strands in K sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	215	218	first strand
Strand 2	B	194	199	parallel
Strand 3	B	171	175	parallel
Strand 4	B	235	240	parallel
Strand 5	B	255	263	parallel
Strand 6	B	284	287	parallel
Strand 7	H	284	287	anti-parallel
Strand 8	H	255	263	parallel
Strand 9	H	235	240	parallel
Strand 10	H	171	175	parallel
Strand 11	H	194	199	parallel
Strand 12	H	215	218	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	B	270	274	first strand
Strand 2	H	270	274	anti-parallel

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There are 2 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	4	9	first strand
Strand 2	C	18	23	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	C	127	130	first strand
Strand 2	C	32	41	anti-parallel
Strand 3	C	67	74	anti-parallel
Strand 4	C	86	89	anti-parallel
Strand 5	C	136	137	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	127	130	first strand
Strand 2	C	32	41	anti-parallel
Strand 3	C	335	339	anti-parallel
Strand 4	C	312	315	parallel

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There are 2 strands in P sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	92	94	first strand
Strand 2	C	114	115	anti-parallel

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There are 12 strands in Q sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	215	218	first strand
Strand 2	C	194	199	parallel
Strand 3	C	171	175	parallel
Strand 4	C	235	240	parallel
Strand 5	C	255	263	parallel
Strand 6	C	284	287	parallel
Strand 7	E	284	287	anti-parallel
Strand 8	E	255	263	parallel
Strand 9	E	235	240	parallel
Strand 10	E	171	175	parallel
Strand 11	E	194	199	parallel
Strand 12	E	215	218	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	C	270	274	first strand
Strand 2	E	270	274	anti-parallel

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There are 2 strands in S sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	4	9	first strand
Strand 2	D	18	23	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	127	130	first strand
Strand 2	D	32	41	anti-parallel
Strand 3	D	67	74	anti-parallel
Strand 4	D	86	89	anti-parallel
Strand 5	D	136	137	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	127	130	first strand
Strand 2	D	32	41	anti-parallel
Strand 3	D	335	339	anti-parallel
Strand 4	D	312	315	parallel

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There are 2 strands in V sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	92	94	first strand
Strand 2	D	114	115	anti-parallel

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There are 12 strands in W sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	215	218	first strand
Strand 2	D	194	199	parallel
Strand 3	D	171	175	parallel
Strand 4	D	235	240	parallel
Strand 5	D	255	263	parallel
Strand 6	D	284	287	parallel
Strand 7	F	284	287	anti-parallel
Strand 8	F	255	263	parallel
Strand 9	F	235	240	parallel
Strand 10	F	171	175	parallel
Strand 11	F	194	199	parallel
Strand 12	F	215	218	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	D	270	274	first strand
Strand 2	F	270	274	anti-parallel

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There are 2 strands in Y sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	4	9	first strand
Strand 2	E	18	23	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	127	130	first strand
Strand 2	E	32	41	anti-parallel
Strand 3	E	66	74	anti-parallel
Strand 4	E	86	90	anti-parallel
Strand 5	E	136	137	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	127	130	first strand
Strand 2	E	32	41	anti-parallel
Strand 3	E	335	339	anti-parallel
Strand 4	E	312	315	parallel

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There are 2 strands in AB sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	92	94	first strand
Strand 2	E	114	115	anti-parallel

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There are 2 strands in AC sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	4	9	first strand
Strand 2	F	18	23	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	F	127	130	first strand
Strand 2	F	32	41	anti-parallel
Strand 3	F	66	74	anti-parallel
Strand 4	F	86	90	anti-parallel
Strand 5	F	136	137	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	127	130	first strand
Strand 2	F	32	41	anti-parallel
Strand 3	F	335	339	anti-parallel
Strand 4	F	312	315	parallel

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There are 2 strands in AF sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	92	94	first strand
Strand 2	F	114	115	anti-parallel

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There are 2 strands in AG sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	G	4	9	first strand
Strand 2	G	18	23	anti-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	G	127	130	first strand
Strand 2	G	32	41	anti-parallel
Strand 3	G	67	74	anti-parallel
Strand 4	G	86	89	anti-parallel
Strand 5	G	136	137	anti-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	G	127	130	first strand
Strand 2	G	32	41	anti-parallel
Strand 3	G	335	339	anti-parallel
Strand 4	G	312	315	parallel

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There are 2 strands in AJ sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	G	92	94	first strand
Strand 2	G	114	115	anti-parallel

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There are 2 strands in AK sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	4	9	first strand
Strand 2	H	18	23	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	127	130	first strand
Strand 2	H	32	41	anti-parallel
Strand 3	H	67	74	anti-parallel
Strand 4	H	86	89	anti-parallel
Strand 5	H	136	137	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	127	130	first strand
Strand 2	H	32	41	anti-parallel
Strand 3	H	335	339	anti-parallel
Strand 4	H	312	315	parallel

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There are 2 strands in AN sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	92	94	first strand
Strand 2	H	114	115	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: 3S2I

Analysis of interatomic Contacts of Structural Units in PDB entry:
3S2I