Analysis of interatomic Contacts of Structural Units in PDB entry:
4S37

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 4S37 entry

There are 8 chains in PDB entry 4S37 (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	ASP 9	THR 176
B	VAL 4	ALA 177
C	ALA 6	ALA 177
D	VAL 4	THR 176
E	ALA 6	ALA 177
F	SER 2	THR 176
G	SER 2	THR 176
H	SER 2	PRO 81

There are 34 helices in PDB entry 4S37. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	9	15	Right-handed alpha
Helix 2	2	A	70	76	Right-handed 310
Helix 3	3	B	5	15	Right-handed alpha
Helix 4	4	B	70	76	Right-handed 310
Helix 5	5	C	7	15	Right-handed alpha
Helix 6	6	C	70	76	Right-handed 310
Helix 7	7	D	5	15	Right-handed alpha
Helix 8	8	D	70	76	Right-handed 310
Helix 9	9	E	7	15	Right-handed alpha
Helix 10	10	E	70	76	Right-handed 310
Helix 11	11	F	3	15	Right-handed alpha
Helix 12	12	F	70	76	Right-handed 310
Helix 13	13	G	3	15	Right-handed alpha
Helix 14	14	G	70	76	Right-handed 310
Helix 15	15	H	3	15	Right-handed alpha
Helix 16	16	H	70	77	Right-handed 310
Helix 17	17	I	4	15	Right-handed alpha
Helix 18	18	I	70	77	Right-handed 310
Helix 19	19	J	3	15	Right-handed alpha
Helix 20	20	J	70	76	Right-handed 310
Helix 21	21	K	3	15	Right-handed alpha
Helix 22	22	K	70	76	Right-handed 310
Helix 23	23	L	3	15	Right-handed alpha
Helix 24	24	L	70	77	Right-handed 310
Helix 25	25	M	7	15	Right-handed alpha
Helix 26	26	M	70	77	Right-handed 310
Helix 27	27	N	7	15	Right-handed alpha
Helix 28	28	N	70	77	Right-handed 310
Helix 29	29	O	10	15	Right-handed alpha
Helix 30	30	O	70	77	Right-handed 310
Helix 31	31	P	70	77	Right-handed 310
Helix 32	32	Q	12	14	Right-handed 310
Helix 33	33	Q	70	77	Right-handed 310
Helix 34	34	R	70	76	Right-handed 310

There are 36 sheets in PDB entry 4S37. 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,

There are 6 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	38	39	first strand
Strand 2	A	30	35	anti-parallel
Strand 3	A	16	25	anti-parallel
Strand 4	A	64	68	anti-parallel
Strand 5	A	78	83	anti-parallel
Strand 6	A	44	45	parallel

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There are 12 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	54	56	first strand
Strand 2	C	97	101	anti-parallel
Strand 3	C	107	111	anti-parallel
Strand 4	C	116	121	anti-parallel
Strand 5	A	125	130	parallel
Strand 6	A	133	138	anti-parallel
Strand 7	A	142	145	anti-parallel
Strand 8	B	149	152	parallel
Strand 9	C	155	158	parallel
Strand 10	A	161	163	parallel
Strand 11	B	167	169	parallel
Strand 12	C	173	174	parallel

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There are 12 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	173	174	first strand
Strand 2	C	167	169	parallel
Strand 3	B	161	163	parallel
Strand 4	A	155	158	parallel
Strand 5	C	149	152	parallel
Strand 6	B	142	145	parallel
Strand 7	B	133	138	anti-parallel
Strand 8	B	125	130	anti-parallel
Strand 9	A	116	121	parallel
Strand 10	A	107	111	anti-parallel
Strand 11	A	97	101	anti-parallel
Strand 12	B	54	56	anti-parallel

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There are 12 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	173	174	first strand
Strand 2	A	167	169	parallel
Strand 3	C	161	163	parallel
Strand 4	B	155	158	parallel
Strand 5	A	149	152	parallel
Strand 6	C	141	145	parallel
Strand 7	C	133	138	anti-parallel
Strand 8	C	125	130	anti-parallel
Strand 9	B	116	121	parallel
Strand 10	B	107	111	anti-parallel
Strand 11	B	97	101	anti-parallel
Strand 12	C	54	56	anti-parallel

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There are 6 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	38	39	first strand
Strand 2	B	30	35	anti-parallel
Strand 3	B	16	25	anti-parallel
Strand 4	B	64	68	anti-parallel
Strand 5	B	78	83	anti-parallel
Strand 6	B	44	45	parallel

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There are 6 strands in F sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	38	39	first strand
Strand 2	C	30	35	anti-parallel
Strand 3	C	16	25	anti-parallel
Strand 4	C	64	68	anti-parallel
Strand 5	C	78	83	anti-parallel
Strand 6	C	44	45	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	D	38	39	first strand
Strand 2	D	30	35	anti-parallel
Strand 3	D	16	25	anti-parallel
Strand 4	D	64	68	anti-parallel
Strand 5	D	78	83	anti-parallel
Strand 6	D	44	45	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	54	56	first strand
Strand 2	F	97	101	anti-parallel
Strand 3	F	107	111	anti-parallel
Strand 4	F	116	121	anti-parallel
Strand 5	D	125	130	parallel
Strand 6	D	133	138	anti-parallel
Strand 7	D	142	145	anti-parallel
Strand 8	E	149	152	parallel
Strand 9	F	155	158	parallel
Strand 10	D	161	163	parallel
Strand 11	E	167	169	parallel
Strand 12	F	173	174	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	173	174	first strand
Strand 2	F	167	169	parallel
Strand 3	E	161	163	parallel
Strand 4	D	155	158	parallel
Strand 5	F	149	152	parallel
Strand 6	E	141	145	parallel
Strand 7	E	133	138	anti-parallel
Strand 8	E	125	130	anti-parallel
Strand 9	D	116	121	parallel
Strand 10	D	107	111	anti-parallel
Strand 11	D	97	101	anti-parallel
Strand 12	E	54	56	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	173	174	first strand
Strand 2	D	167	169	parallel
Strand 3	F	161	163	parallel
Strand 4	E	155	158	parallel
Strand 5	D	149	152	parallel
Strand 6	F	141	145	parallel
Strand 7	F	133	138	anti-parallel
Strand 8	F	125	130	anti-parallel
Strand 9	E	116	121	parallel
Strand 10	E	107	111	anti-parallel
Strand 11	E	97	101	anti-parallel
Strand 12	F	54	56	anti-parallel

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There are 6 strands in K sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	38	39	first strand
Strand 2	E	30	35	anti-parallel
Strand 3	E	16	25	anti-parallel
Strand 4	E	64	68	anti-parallel
Strand 5	E	78	83	anti-parallel
Strand 6	E	44	45	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	F	38	39	first strand
Strand 2	F	30	35	anti-parallel
Strand 3	F	16	25	anti-parallel
Strand 4	F	64	68	anti-parallel
Strand 5	F	78	83	anti-parallel
Strand 6	F	44	45	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	G	38	39	first strand
Strand 2	G	30	35	anti-parallel
Strand 3	G	16	25	anti-parallel
Strand 4	G	64	68	anti-parallel
Strand 5	G	78	83	anti-parallel
Strand 6	G	44	45	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	G	54	56	first strand
Strand 2	I	97	101	anti-parallel
Strand 3	I	107	111	anti-parallel
Strand 4	I	116	121	anti-parallel
Strand 5	G	125	130	parallel
Strand 6	G	133	138	anti-parallel
Strand 7	G	141	145	anti-parallel
Strand 8	H	149	152	parallel
Strand 9	I	155	158	parallel
Strand 10	G	161	163	parallel
Strand 11	H	167	169	parallel
Strand 12	I	173	174	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	G	173	174	first strand
Strand 2	I	167	169	parallel
Strand 3	H	161	163	parallel
Strand 4	G	155	158	parallel
Strand 5	I	149	152	parallel
Strand 6	H	141	145	parallel
Strand 7	H	133	138	anti-parallel
Strand 8	H	125	130	anti-parallel
Strand 9	G	116	121	parallel
Strand 10	G	107	111	anti-parallel
Strand 11	G	97	102	anti-parallel
Strand 12	H	53	56	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	173	174	first strand
Strand 2	G	167	169	parallel
Strand 3	I	161	163	parallel
Strand 4	H	155	158	parallel
Strand 5	G	149	152	parallel
Strand 6	I	141	145	parallel
Strand 7	I	133	138	anti-parallel
Strand 8	I	125	130	anti-parallel
Strand 9	H	116	121	parallel
Strand 10	H	107	111	anti-parallel
Strand 11	H	97	101	anti-parallel
Strand 12	I	54	56	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	H	38	39	first strand
Strand 2	H	30	35	anti-parallel
Strand 3	H	16	25	anti-parallel
Strand 4	H	64	68	anti-parallel
Strand 5	H	78	83	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	I	38	39	first strand
Strand 2	I	30	35	anti-parallel
Strand 3	I	16	25	anti-parallel
Strand 4	I	64	68	anti-parallel
Strand 5	I	78	83	anti-parallel

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There are 6 strands in S sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	J	38	39	first strand
Strand 2	J	30	35	anti-parallel
Strand 3	J	16	25	anti-parallel
Strand 4	J	64	68	anti-parallel
Strand 5	J	78	83	anti-parallel
Strand 6	J	44	45	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	J	54	56	first strand
Strand 2	L	97	101	anti-parallel
Strand 3	L	107	111	anti-parallel
Strand 4	L	116	121	anti-parallel
Strand 5	J	125	130	parallel
Strand 6	J	133	138	anti-parallel
Strand 7	J	141	145	anti-parallel
Strand 8	K	149	152	parallel
Strand 9	L	155	158	parallel
Strand 10	J	161	163	parallel
Strand 11	K	167	169	parallel
Strand 12	L	173	174	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	J	173	174	first strand
Strand 2	L	167	169	parallel
Strand 3	K	161	163	parallel
Strand 4	J	155	158	parallel
Strand 5	L	149	152	parallel
Strand 6	K	141	145	parallel
Strand 7	K	133	138	anti-parallel
Strand 8	K	125	130	anti-parallel
Strand 9	J	116	121	parallel
Strand 10	J	107	111	anti-parallel
Strand 11	J	97	101	anti-parallel
Strand 12	K	54	56	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	K	173	174	first strand
Strand 2	J	167	169	parallel
Strand 3	L	161	163	parallel
Strand 4	K	155	158	parallel
Strand 5	J	149	152	parallel
Strand 6	L	142	145	parallel
Strand 7	L	133	138	anti-parallel
Strand 8	L	125	130	anti-parallel
Strand 9	K	116	121	parallel
Strand 10	K	107	111	anti-parallel
Strand 11	K	97	101	anti-parallel
Strand 12	L	54	56	anti-parallel

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There are 6 strands in W sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	K	38	39	first strand
Strand 2	K	30	35	anti-parallel
Strand 3	K	16	25	anti-parallel
Strand 4	K	64	68	anti-parallel
Strand 5	K	78	83	anti-parallel
Strand 6	K	44	45	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	L	38	39	first strand
Strand 2	L	30	35	anti-parallel
Strand 3	L	16	25	anti-parallel
Strand 4	L	64	68	anti-parallel
Strand 5	L	78	83	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	M	38	39	first strand
Strand 2	M	30	35	anti-parallel
Strand 3	M	16	25	anti-parallel
Strand 4	M	64	68	anti-parallel
Strand 5	M	78	83	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	M	54	56	first strand
Strand 2	O	97	101	anti-parallel
Strand 3	O	107	111	anti-parallel
Strand 4	O	116	121	anti-parallel
Strand 5	M	125	130	parallel
Strand 6	M	133	138	anti-parallel
Strand 7	M	141	145	anti-parallel
Strand 8	N	149	152	parallel
Strand 9	O	155	158	parallel
Strand 10	M	161	163	parallel
Strand 11	N	167	169	parallel
Strand 12	O	173	174	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	M	173	174	first strand
Strand 2	O	167	169	parallel
Strand 3	N	161	163	parallel
Strand 4	M	155	158	parallel
Strand 5	O	149	152	parallel
Strand 6	N	141	145	parallel
Strand 7	N	133	138	anti-parallel
Strand 8	N	125	130	anti-parallel
Strand 9	M	116	121	parallel
Strand 10	M	107	111	anti-parallel
Strand 11	M	97	101	anti-parallel
Strand 12	N	54	56	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	N	173	174	first strand
Strand 2	M	167	169	parallel
Strand 3	O	161	163	parallel
Strand 4	N	155	158	parallel
Strand 5	M	149	152	parallel
Strand 6	O	142	145	parallel
Strand 7	O	133	138	anti-parallel
Strand 8	O	125	130	anti-parallel
Strand 9	N	116	121	parallel
Strand 10	N	107	111	anti-parallel
Strand 11	N	97	102	anti-parallel
Strand 12	O	53	56	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	N	38	39	first strand
Strand 2	N	30	35	anti-parallel
Strand 3	N	16	25	anti-parallel
Strand 4	N	64	68	anti-parallel
Strand 5	N	78	83	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	O	38	39	first strand
Strand 2	O	30	35	anti-parallel
Strand 3	O	16	25	anti-parallel
Strand 4	O	64	68	anti-parallel
Strand 5	O	78	83	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	P	30	34	first strand
Strand 2	P	16	25	anti-parallel
Strand 3	P	64	68	anti-parallel
Strand 4	P	78	83	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	P	54	56	first strand
Strand 2	R	97	101	anti-parallel
Strand 3	R	107	111	anti-parallel
Strand 4	R	116	121	anti-parallel
Strand 5	P	125	130	parallel
Strand 6	P	133	138	anti-parallel
Strand 7	P	142	145	anti-parallel
Strand 8	Q	149	152	parallel
Strand 9	R	155	158	parallel
Strand 10	P	161	163	parallel
Strand 11	Q	167	169	parallel
Strand 12	R	173	174	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	P	173	174	first strand
Strand 2	R	167	169	parallel
Strand 3	Q	161	163	parallel
Strand 4	P	155	158	parallel
Strand 5	R	149	152	parallel
Strand 6	Q	141	145	parallel
Strand 7	Q	133	138	anti-parallel
Strand 8	Q	125	130	anti-parallel
Strand 9	P	116	121	parallel
Strand 10	P	107	111	anti-parallel
Strand 11	P	97	102	anti-parallel
Strand 12	Q	53	56	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	Q	173	174	first strand
Strand 2	P	167	169	parallel
Strand 3	R	161	163	parallel
Strand 4	Q	155	158	parallel
Strand 5	P	149	152	parallel
Strand 6	R	141	145	parallel
Strand 7	R	133	138	anti-parallel
Strand 8	R	125	130	anti-parallel
Strand 9	Q	116	121	parallel
Strand 10	Q	107	111	anti-parallel
Strand 11	Q	98	101	anti-parallel
Strand 12	R	54	56	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	Q	38	39	first strand
Strand 2	Q	30	35	anti-parallel
Strand 3	Q	16	25	anti-parallel
Strand 4	Q	64	68	anti-parallel
Strand 5	Q	78	83	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	R	30	34	first strand
Strand 2	R	16	25	anti-parallel
Strand 3	R	64	68	anti-parallel
Strand 4	R	78	83	anti-parallel
Strand 5	R	44	45	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: 4S37

Analysis of interatomic Contacts of Structural Units in PDB entry:
4S37