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

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 3SAM entry

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

Chain ID	Initial residue	Terminal residue
A	ALA 0	MET 547
B	GLY -1	MET 547
C	ILE -11	MET 547

There are 43 helices in PDB entry 3SAM. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	2	10	Right-handed alpha
Helix 2	2	A	89	94	Right-handed alpha
Helix 3	3	A	112	120	Right-handed alpha
Helix 4	4	A	122	129	Right-handed alpha
Helix 5	5	A	132	137	Right-handed alpha
Helix 6	6	A	160	164	Right-handed 310
Helix 7	7	A	165	169	Right-handed 310
Helix 8	8	A	186	189	Right-handed 310
Helix 9	9	A	198	206	Right-handed alpha
Helix 10	10	A	279	295	Right-handed alpha
Helix 11	11	A	391	395	Right-handed 310
Helix 12	12	A	396	401	Right-handed alpha
Helix 13	13	A	413	419	Right-handed alpha
Helix 14	14	A	458	469	Right-handed alpha
Helix 15	15	A	516	521	Right-handed 310
Helix 16	16	B	2	11	Right-handed alpha
Helix 17	17	B	89	94	Right-handed alpha
Helix 18	18	B	112	120	Right-handed alpha
Helix 19	19	B	122	129	Right-handed alpha
Helix 20	20	B	132	137	Right-handed alpha
Helix 21	21	B	165	170	Right-handed 310
Helix 22	22	B	186	189	Right-handed 310
Helix 23	23	B	198	206	Right-handed alpha
Helix 24	24	B	279	295	Right-handed alpha
Helix 25	25	B	391	395	Right-handed 310
Helix 26	26	B	396	401	Right-handed alpha
Helix 27	27	B	413	419	Right-handed alpha
Helix 28	28	B	458	469	Right-handed alpha
Helix 29	29	B	495	499	Right-handed 310
Helix 30	30	B	516	521	Right-handed 310
Helix 31	31	C	89	94	Right-handed alpha
Helix 32	32	C	112	120	Right-handed alpha
Helix 33	33	C	122	129	Right-handed alpha
Helix 34	34	C	132	137	Right-handed alpha
Helix 35	35	C	160	164	Right-handed 310
Helix 36	36	C	186	189	Right-handed 310
Helix 37	37	C	198	206	Right-handed alpha
Helix 38	38	C	279	295	Right-handed alpha
Helix 39	39	C	391	395	Right-handed 310
Helix 40	40	C	396	401	Right-handed alpha
Helix 41	41	C	413	419	Right-handed alpha
Helix 42	42	C	458	469	Right-handed alpha
Helix 43	43	C	516	521	Right-handed 310

There are 36 sheets in PDB entry 3SAM. 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 4 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	32	40	first strand
Strand 2	A	210	219	anti-parallel
Strand 3	A	65	75	anti-parallel
Strand 4	A	152	158	anti-parallel

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There are 4 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	32	40	first strand
Strand 2	A	210	219	anti-parallel
Strand 3	A	65	75	anti-parallel
Strand 4	A	171	172	anti-parallel

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There are 5 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	42	44	first strand
Strand 2	A	53	58	anti-parallel
Strand 3	A	178	184	anti-parallel
Strand 4	A	95	102	anti-parallel
Strand 5	A	105	111	anti-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	78	79	first strand
Strand 2	A	147	149	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	139	141	first strand
Strand 2	A	82	86	anti-parallel
Strand 3	A	191	193	anti-parallel

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There are 4 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	227	236	first strand
Strand 2	A	522	536	anti-parallel
Strand 3	A	251	262	anti-parallel
Strand 4	A	492	493	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	475	478	first strand
Strand 2	A	251	262	anti-parallel
Strand 3	A	522	536	anti-parallel
Strand 4	A	542	545	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	243	247	first strand
Strand 2	A	502	509	anti-parallel
Strand 3	A	440	447	anti-parallel
Strand 4	A	450	455	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	A	269	270	first strand
Strand 2	A	421	422	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	A	296	299	first strand
Strand 2	A	340	344	anti-parallel
Strand 3	A	312	314	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	320	323	first strand
Strand 2	A	326	333	anti-parallel
Strand 3	A	365	373	parallel
Strand 4	A	378	386	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	A	349	350	first strand
Strand 2	A	359	360	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	32	39	first strand
Strand 2	B	210	219	anti-parallel
Strand 3	B	65	75	anti-parallel
Strand 4	B	152	158	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	32	39	first strand
Strand 2	B	210	219	anti-parallel
Strand 3	B	65	75	anti-parallel
Strand 4	B	171	172	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	42	45	first strand
Strand 2	B	52	58	anti-parallel
Strand 3	B	178	184	anti-parallel
Strand 4	B	95	102	anti-parallel
Strand 5	B	105	111	anti-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	B	78	79	first strand
Strand 2	B	147	149	anti-parallel

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There are 3 strands in Q sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	139	141	first strand
Strand 2	B	82	86	anti-parallel
Strand 3	B	191	193	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	227	236	first strand
Strand 2	B	522	536	anti-parallel
Strand 3	B	251	262	anti-parallel
Strand 4	B	492	493	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	475	478	first strand
Strand 2	B	251	262	anti-parallel
Strand 3	B	522	536	anti-parallel
Strand 4	B	542	545	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	243	247	first strand
Strand 2	B	502	509	anti-parallel
Strand 3	B	440	447	anti-parallel
Strand 4	B	450	455	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	269	270	first strand
Strand 2	B	421	422	anti-parallel

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There are 3 strands in V sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	296	299	first strand
Strand 2	B	340	344	anti-parallel
Strand 3	B	312	314	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	320	323	first strand
Strand 2	B	326	333	anti-parallel
Strand 3	B	365	373	parallel
Strand 4	B	378	386	anti-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	B	349	350	first strand
Strand 2	B	359	360	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	32	40	first strand
Strand 2	C	210	219	anti-parallel
Strand 3	C	65	75	anti-parallel
Strand 4	C	152	158	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	32	40	first strand
Strand 2	C	210	219	anti-parallel
Strand 3	C	65	75	anti-parallel
Strand 4	C	171	172	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	42	44	first strand
Strand 2	C	53	58	anti-parallel
Strand 3	C	178	184	anti-parallel
Strand 4	C	95	102	anti-parallel
Strand 5	C	105	111	anti-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	C	78	79	first strand
Strand 2	C	147	149	anti-parallel

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There are 3 strands in AC sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	139	141	first strand
Strand 2	C	82	86	anti-parallel
Strand 3	C	191	193	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	227	236	first strand
Strand 2	C	522	536	anti-parallel
Strand 3	C	251	262	anti-parallel
Strand 4	C	492	493	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	C	475	478	first strand
Strand 2	C	251	262	anti-parallel
Strand 3	C	522	536	anti-parallel
Strand 4	C	542	545	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	243	246	first strand
Strand 2	C	503	509	anti-parallel
Strand 3	C	440	447	anti-parallel
Strand 4	C	450	455	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	C	269	270	first strand
Strand 2	C	421	422	anti-parallel

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There are 3 strands in AH sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	296	299	first strand
Strand 2	C	340	344	anti-parallel
Strand 3	C	312	314	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	C	320	323	first strand
Strand 2	C	326	333	anti-parallel
Strand 3	C	365	373	parallel
Strand 4	C	378	386	anti-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	C	349	350	first strand
Strand 2	C	359	360	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: 3SAM

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