Analysis of interatomic Contacts of Structural Units in PDB entry:
3SQ3

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 3SQ3 entry

There are 3 chains in PDB entry 3SQ3 (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	GLY 79	LEU 540
B	GLY 79	ALA 539
C	GLY 79	THR 499

There are 75 helices in PDB entry 3SQ3. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	104	110	Right-handed alpha
Helix 2	2	A	126	131	Right-handed alpha
Helix 3	3	A	153	157	Right-handed 310
Helix 4	4	A	158	166	Right-handed alpha
Helix 5	5	A	205	211	Right-handed alpha
Helix 6	6	A	231	243	Right-handed alpha
Helix 7	7	A	246	253	Right-handed alpha
Helix 8	8	A	253	259	Right-handed alpha
Helix 9	9	A	262	266	Right-handed 310
Helix 10	10	A	281	293	Right-handed alpha
Helix 11	11	A	324	329	Right-handed alpha
Helix 12	12	A	329	335	Right-handed alpha
Helix 13	13	A	355	367	Right-handed alpha
Helix 14	14	A	376	382	Right-handed alpha
Helix 15	15	A	389	393	Right-handed 310
Helix 16	16	A	400	410	Right-handed alpha
Helix 17	17	A	467	472	Right-handed alpha
Helix 18	18	A	490	492	Right-handed 310
Helix 19	19	A	504	506	Right-handed 310
Helix 20	20	B	104	110	Right-handed alpha
Helix 21	21	B	126	131	Right-handed alpha
Helix 22	22	B	153	157	Right-handed 310
Helix 23	23	B	158	166	Right-handed alpha
Helix 24	24	B	205	211	Right-handed alpha
Helix 25	25	B	231	243	Right-handed alpha
Helix 26	26	B	246	253	Right-handed alpha
Helix 27	27	B	253	259	Right-handed alpha
Helix 28	28	B	262	266	Right-handed 310
Helix 29	29	B	281	293	Right-handed alpha
Helix 30	30	B	324	329	Right-handed alpha
Helix 31	31	B	329	335	Right-handed alpha
Helix 32	32	B	355	367	Right-handed alpha
Helix 33	33	B	377	382	Right-handed alpha
Helix 34	34	B	389	393	Right-handed 310
Helix 35	35	B	400	410	Right-handed alpha
Helix 36	36	B	467	472	Right-handed alpha
Helix 37	37	B	490	492	Right-handed 310
Helix 38	38	B	504	506	Right-handed 310
Helix 39	39	C	104	110	Right-handed alpha
Helix 40	40	C	126	131	Right-handed alpha
Helix 41	41	C	153	157	Right-handed 310
Helix 42	42	C	158	166	Right-handed alpha
Helix 43	43	C	205	211	Right-handed alpha
Helix 44	44	C	231	243	Right-handed alpha
Helix 45	45	C	246	253	Right-handed alpha
Helix 46	46	C	253	259	Right-handed alpha
Helix 47	47	C	262	266	Right-handed 310
Helix 48	48	C	281	293	Right-handed alpha
Helix 49	49	C	324	329	Right-handed alpha
Helix 50	50	C	329	335	Right-handed alpha
Helix 51	51	C	355	367	Right-handed alpha
Helix 52	52	C	376	382	Right-handed alpha
Helix 53	53	C	385	393	Right-handed 310
Helix 54	54	C	400	410	Right-handed alpha
Helix 55	55	C	467	472	Right-handed alpha
Helix 56	56	C	490	492	Right-handed 310
Helix 57	57	C	504	506	Right-handed 310
Helix 58	58	D	104	110	Right-handed alpha
Helix 59	59	D	126	131	Right-handed alpha
Helix 60	60	D	153	157	Right-handed 310
Helix 61	61	D	158	166	Right-handed alpha
Helix 62	62	D	205	211	Right-handed alpha
Helix 63	63	D	231	243	Right-handed alpha
Helix 64	64	D	246	253	Right-handed alpha
Helix 65	65	D	253	259	Right-handed alpha
Helix 66	66	D	262	266	Right-handed 310
Helix 67	67	D	281	293	Right-handed alpha
Helix 68	68	D	329	335	Right-handed alpha
Helix 69	69	D	355	367	Right-handed alpha
Helix 70	70	D	377	381	Right-handed 310
Helix 71	71	D	389	393	Right-handed 310
Helix 72	72	D	400	410	Right-handed alpha
Helix 73	73	D	467	472	Right-handed alpha
Helix 74	74	D	490	492	Right-handed 310
Helix 75	75	D	504	506	Right-handed 310

There are 20 sheets in PDB entry 3SQ3. 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,

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	102	103	first strand
Strand 2	A	81	85	parallel
Strand 3	A	215	218	anti-parallel
Strand 4	A	194	200	anti-parallel
Strand 5	A	185	190	anti-parallel
Strand 6	A	114	120	anti-parallel
Strand 7	A	139	145	parallel
Strand 8	A	168	173	parallel

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There are 6 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	102	103	first strand
Strand 2	A	81	85	parallel
Strand 3	A	215	218	anti-parallel
Strand 4	A	194	200	anti-parallel
Strand 5	A	222	224	anti-parallel
Strand 6	A	260	261	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	124	125	first strand
Strand 2	A	149	150	parallel

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There are 8 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	269	273	first strand
Strand 2	A	482	488	anti-parallel
Strand 3	A	458	462	anti-parallel
Strand 4	A	434	441	anti-parallel
Strand 5	A	303	309	anti-parallel
Strand 6	A	368	373	parallel
Strand 7	A	414	417	parallel
Strand 8	A	525	527	anti-parallel

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There are 3 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	455	456	first strand
Strand 2	A	498	502	anti-parallel
Strand 3	A	517	519	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	102	103	first strand
Strand 2	B	81	85	parallel
Strand 3	B	215	218	anti-parallel
Strand 4	B	194	200	anti-parallel
Strand 5	B	185	190	anti-parallel
Strand 6	B	114	120	anti-parallel
Strand 7	B	139	145	parallel
Strand 8	B	168	173	parallel

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There are 6 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	102	103	first strand
Strand 2	B	81	85	parallel
Strand 3	B	215	218	anti-parallel
Strand 4	B	194	200	anti-parallel
Strand 5	B	222	224	anti-parallel
Strand 6	B	260	261	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	124	125	first strand
Strand 2	B	149	150	parallel

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There are 8 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	269	273	first strand
Strand 2	B	482	488	anti-parallel
Strand 3	B	458	462	anti-parallel
Strand 4	B	434	441	anti-parallel
Strand 5	B	303	309	anti-parallel
Strand 6	B	368	373	parallel
Strand 7	B	414	417	parallel
Strand 8	B	525	527	anti-parallel

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There are 3 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	455	456	first strand
Strand 2	B	498	502	anti-parallel
Strand 3	B	517	519	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	102	103	first strand
Strand 2	C	81	85	parallel
Strand 3	C	215	218	anti-parallel
Strand 4	C	194	200	anti-parallel
Strand 5	C	185	190	anti-parallel
Strand 6	C	114	120	anti-parallel
Strand 7	C	139	145	parallel
Strand 8	C	168	173	parallel

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There are 6 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	102	103	first strand
Strand 2	C	81	85	parallel
Strand 3	C	215	218	anti-parallel
Strand 4	C	194	200	anti-parallel
Strand 5	C	222	224	anti-parallel
Strand 6	C	260	261	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	124	125	first strand
Strand 2	C	149	150	parallel

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There are 8 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	269	273	first strand
Strand 2	C	482	488	anti-parallel
Strand 3	C	458	462	anti-parallel
Strand 4	C	435	441	anti-parallel
Strand 5	C	303	309	anti-parallel
Strand 6	C	368	373	parallel
Strand 7	C	414	417	parallel
Strand 8	C	525	527	anti-parallel

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There are 3 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	455	456	first strand
Strand 2	C	498	502	anti-parallel
Strand 3	C	517	519	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	102	103	first strand
Strand 2	D	81	85	parallel
Strand 3	D	215	218	anti-parallel
Strand 4	D	194	200	anti-parallel
Strand 5	D	185	190	anti-parallel
Strand 6	D	114	120	anti-parallel
Strand 7	D	139	145	parallel
Strand 8	D	168	173	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	102	103	first strand
Strand 2	D	81	85	parallel
Strand 3	D	215	218	anti-parallel
Strand 4	D	194	200	anti-parallel
Strand 5	D	222	224	anti-parallel
Strand 6	D	260	261	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	124	125	first strand
Strand 2	D	149	150	parallel

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There are 8 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	269	273	first strand
Strand 2	D	482	488	anti-parallel
Strand 3	D	458	462	anti-parallel
Strand 4	D	434	441	anti-parallel
Strand 5	D	303	309	anti-parallel
Strand 6	D	368	373	parallel
Strand 7	D	414	417	parallel
Strand 8	D	525	527	anti-parallel

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There are 3 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	455	456	first strand
Strand 2	D	498	502	anti-parallel
Strand 3	D	517	519	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: 3SQ3

Analysis of interatomic Contacts of Structural Units in PDB entry:
3SQ3