Analysis of interatomic Contacts of Structural Units in PDB entry:
3B20

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 3B20 entry

There are 6 chains in PDB entry 3B20 (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	MET 1	ALA 338
B	MET 1	ALA 338
O	THR 2	ALA 338
P	MET 1	ALA 338
Q	MET 1	ALA 338
R	MET 1	ALA 338

There are 83 helices in PDB entry 3B20. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	11	24	Right-handed alpha
Helix 2	2	A	39	48	Right-handed alpha
Helix 3	3	A	81	85	Right-handed 310
Helix 4	4	A	104	114	Right-handed alpha
Helix 5	5	A	138	142	Right-handed 310
Helix 6	6	A	154	172	Right-handed alpha
Helix 7	7	A	203	207	Right-handed 310
Helix 8	8	A	214	223	Right-handed alpha
Helix 9	9	A	224	227	Right-handed 310
Helix 10	10	A	256	270	Right-handed alpha
Helix 11	11	A	284	289	Right-handed 310
Helix 12	12	A	300	302	Right-handed 310
Helix 13	13	A	319	336	Right-handed alpha
Helix 14	14	B	11	23	Right-handed alpha
Helix 15	15	B	39	49	Right-handed alpha
Helix 16	16	B	81	85	Right-handed 310
Helix 17	17	B	104	109	Right-handed alpha
Helix 18	18	B	109	114	Right-handed alpha
Helix 19	19	B	138	142	Right-handed 310
Helix 20	20	B	154	172	Right-handed alpha
Helix 21	21	B	214	223	Right-handed alpha
Helix 22	22	B	224	227	Right-handed 310
Helix 23	23	B	256	270	Right-handed alpha
Helix 24	24	B	284	289	Right-handed 310
Helix 25	25	B	300	302	Right-handed 310
Helix 26	26	B	319	336	Right-handed alpha
Helix 27	27	O	11	23	Right-handed alpha
Helix 28	28	O	39	49	Right-handed alpha
Helix 29	29	O	81	85	Right-handed 310
Helix 30	30	O	104	109	Right-handed alpha
Helix 31	31	O	109	114	Right-handed alpha
Helix 32	32	O	138	142	Right-handed 310
Helix 33	33	O	154	172	Right-handed alpha
Helix 34	34	O	203	207	Right-handed 310
Helix 35	35	O	214	223	Right-handed alpha
Helix 36	36	O	224	227	Right-handed 310
Helix 37	37	O	256	270	Right-handed alpha
Helix 38	38	O	284	289	Right-handed 310
Helix 39	39	O	300	302	Right-handed 310
Helix 40	40	O	319	337	Right-handed alpha
Helix 41	41	P	11	23	Right-handed alpha
Helix 42	42	P	39	49	Right-handed alpha
Helix 43	43	P	81	85	Right-handed 310
Helix 44	44	P	86	91	Right-handed alpha
Helix 45	45	P	104	114	Right-handed alpha
Helix 46	46	P	138	142	Right-handed 310
Helix 47	47	P	143	147	Right-handed 310
Helix 48	48	P	154	159	Right-handed alpha
Helix 49	49	P	160	172	Right-handed alpha
Helix 50	50	P	214	223	Right-handed alpha
Helix 51	51	P	224	227	Right-handed 310
Helix 52	52	P	256	270	Right-handed alpha
Helix 53	53	P	284	289	Right-handed 310
Helix 54	54	P	300	302	Right-handed 310
Helix 55	55	P	319	336	Right-handed alpha
Helix 56	56	Q	11	23	Right-handed alpha
Helix 57	57	Q	40	49	Right-handed alpha
Helix 58	58	Q	81	85	Right-handed 310
Helix 59	59	Q	104	109	Right-handed alpha
Helix 60	60	Q	109	114	Right-handed alpha
Helix 61	61	Q	138	142	Right-handed 310
Helix 62	62	Q	154	172	Right-handed alpha
Helix 63	63	Q	203	207	Right-handed 310
Helix 64	64	Q	214	223	Right-handed alpha
Helix 65	65	Q	224	227	Right-handed 310
Helix 66	66	Q	256	270	Right-handed alpha
Helix 67	67	Q	284	289	Right-handed 310
Helix 68	68	Q	300	302	Right-handed 310
Helix 69	69	Q	319	336	Right-handed alpha
Helix 70	70	R	11	23	Right-handed alpha
Helix 71	71	R	39	48	Right-handed alpha
Helix 72	72	R	81	85	Right-handed 310
Helix 73	73	R	104	114	Right-handed alpha
Helix 74	74	R	138	142	Right-handed 310
Helix 75	75	R	154	172	Right-handed alpha
Helix 76	76	R	203	207	Right-handed 310
Helix 77	77	R	214	219	Right-handed alpha
Helix 78	78	R	220	222	Right-handed 310
Helix 79	79	R	223	227	Right-handed 310
Helix 80	80	R	256	270	Right-handed alpha
Helix 81	81	R	284	289	Right-handed 310
Helix 82	82	R	300	302	Right-handed 310
Helix 83	83	R	319	337	Right-handed alpha

There are 21 sheets in PDB entry 3B20. 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,

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	76	77	first strand
Strand 2	A	29	35	parallel
Strand 3	A	3	8	parallel
Strand 4	A	94	97	parallel
Strand 5	A	118	121	parallel
Strand 6	A	149	151	parallel
Strand 7	A	131	132	parallel

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There are 2 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	49	50	first strand
Strand 2	A	54	55	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	60	62	first strand
Strand 2	A	67	69	anti-parallel

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There are 7 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	209	211	first strand
Strand 2	A	230	237	anti-parallel
Strand 3	A	173	183	parallel
Strand 4	A	243	251	anti-parallel
Strand 5	A	309	316	anti-parallel
Strand 6	A	295	298	anti-parallel
Strand 7	A	276	279	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	A	209	211	first strand
Strand 2	A	230	237	anti-parallel
Strand 3	A	173	183	parallel
Strand 4	A	243	251	anti-parallel
Strand 5	A	309	316	anti-parallel
Strand 6	A	303	305	anti-parallel

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There are 9 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	60	62	first strand
Strand 2	B	66	69	anti-parallel
Strand 3	B	72	77	anti-parallel
Strand 4	B	29	35	parallel
Strand 5	B	3	8	parallel
Strand 6	B	94	97	parallel
Strand 7	B	118	121	parallel
Strand 8	B	149	151	parallel
Strand 9	B	131	132	parallel

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There are 7 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	209	211	first strand
Strand 2	B	230	237	anti-parallel
Strand 3	B	173	183	parallel
Strand 4	B	243	251	anti-parallel
Strand 5	B	309	316	anti-parallel
Strand 6	B	295	298	anti-parallel
Strand 7	B	276	279	parallel

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There are 6 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	209	211	first strand
Strand 2	B	230	237	anti-parallel
Strand 3	B	173	183	parallel
Strand 4	B	243	251	anti-parallel
Strand 5	B	309	316	anti-parallel
Strand 6	B	303	305	anti-parallel

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There are 9 strands in I sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	O	60	61	first strand
Strand 2	O	66	69	anti-parallel
Strand 3	O	72	77	anti-parallel
Strand 4	O	29	35	parallel
Strand 5	O	3	8	parallel
Strand 6	O	94	97	parallel
Strand 7	O	118	121	parallel
Strand 8	O	149	151	parallel
Strand 9	O	131	132	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	O	209	211	first strand
Strand 2	O	230	237	anti-parallel
Strand 3	O	173	183	parallel
Strand 4	O	243	251	anti-parallel
Strand 5	O	309	316	anti-parallel
Strand 6	O	295	298	anti-parallel
Strand 7	O	276	279	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	O	209	211	first strand
Strand 2	O	230	237	anti-parallel
Strand 3	O	173	183	parallel
Strand 4	O	243	251	anti-parallel
Strand 5	O	309	316	anti-parallel
Strand 6	O	303	305	anti-parallel

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There are 9 strands in L sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	P	60	62	first strand
Strand 2	P	66	69	anti-parallel
Strand 3	P	72	77	anti-parallel
Strand 4	P	29	35	parallel
Strand 5	P	3	8	parallel
Strand 6	P	94	97	parallel
Strand 7	P	118	121	parallel
Strand 8	P	149	151	parallel
Strand 9	P	131	132	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	P	209	211	first strand
Strand 2	P	230	237	anti-parallel
Strand 3	P	173	183	parallel
Strand 4	P	243	251	anti-parallel
Strand 5	P	309	316	anti-parallel
Strand 6	P	295	298	anti-parallel
Strand 7	P	276	279	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	P	209	211	first strand
Strand 2	P	230	237	anti-parallel
Strand 3	P	173	183	parallel
Strand 4	P	243	251	anti-parallel
Strand 5	P	309	316	anti-parallel
Strand 6	P	303	305	anti-parallel

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There are 9 strands in O sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	Q	60	62	first strand
Strand 2	Q	66	69	anti-parallel
Strand 3	Q	72	77	anti-parallel
Strand 4	Q	29	35	parallel
Strand 5	Q	3	8	parallel
Strand 6	Q	94	97	parallel
Strand 7	Q	118	121	parallel
Strand 8	Q	149	151	parallel
Strand 9	Q	131	132	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	Q	209	211	first strand
Strand 2	Q	230	237	anti-parallel
Strand 3	Q	173	183	parallel
Strand 4	Q	243	251	anti-parallel
Strand 5	Q	309	316	anti-parallel
Strand 6	Q	295	298	anti-parallel
Strand 7	Q	276	279	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	Q	209	211	first strand
Strand 2	Q	230	237	anti-parallel
Strand 3	Q	173	183	parallel
Strand 4	Q	243	251	anti-parallel
Strand 5	Q	309	316	anti-parallel
Strand 6	Q	303	305	anti-parallel

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There are 9 strands in R sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	R	60	61	first strand
Strand 2	R	66	69	anti-parallel
Strand 3	R	72	77	anti-parallel
Strand 4	R	29	35	parallel
Strand 5	R	3	8	parallel
Strand 6	R	94	97	parallel
Strand 7	R	118	121	parallel
Strand 8	R	149	151	parallel
Strand 9	R	131	132	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	R	49	50	first strand
Strand 2	R	54	55	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	R	209	211	first strand
Strand 2	R	233	237	anti-parallel
Strand 3	R	173	183	parallel
Strand 4	R	243	251	anti-parallel
Strand 5	R	309	316	anti-parallel
Strand 6	R	295	298	anti-parallel
Strand 7	R	276	279	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	R	209	211	first strand
Strand 2	R	233	237	anti-parallel
Strand 3	R	173	183	parallel
Strand 4	R	243	251	anti-parallel
Strand 5	R	309	316	anti-parallel
Strand 6	R	303	305	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: 3B20

Analysis of interatomic Contacts of Structural Units in PDB entry:
3B20