Analysis of interatomic Contacts of Structural Units in PDB entry:
4A2U

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 4A2U entry

There are 8 chains in PDB entry 4A2U (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	MET 1	ARG 224
B	MET 1	ARG 224
C	MET 1	ARG 224
D	SER 17	ARG 224
E	MET 1	ARG 224
F	SER -1	ARG 224
G	MET 1	ARG 224
H	GLY -2	ARG 224

There are 73 helices in PDB entry 4A2U. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	15	25	Right-handed alpha
Helix 2	2	A	80	85	Right-handed alpha
Helix 3	3	A	106	116	Right-handed alpha
Helix 4	4	A	117	144	Right-handed alpha
Helix 5	5	A	145	162	Right-handed alpha
Helix 6	6	A	176	185	Right-handed alpha
Helix 7	7	A	187	192	Right-handed alpha
Helix 8	8	A	192	198	Right-handed alpha
Helix 9	9	A	216	224	Right-handed alpha
Helix 10	10	B	1	7	Right-handed alpha
Helix 11	11	B	80	85	Right-handed alpha
Helix 12	12	B	107	116	Right-handed alpha
Helix 13	13	B	118	144	Right-handed alpha
Helix 14	14	B	145	161	Right-handed alpha
Helix 15	15	B	176	185	Right-handed alpha
Helix 16	16	B	187	201	Right-handed alpha
Helix 17	17	B	215	224	Right-handed alpha
Helix 18	18	C	1	7	Right-handed alpha
Helix 19	19	C	80	85	Right-handed alpha
Helix 20	20	C	106	116	Right-handed alpha
Helix 21	21	C	118	144	Right-handed alpha
Helix 22	22	C	145	161	Right-handed alpha
Helix 23	23	C	176	185	Right-handed alpha
Helix 24	24	C	187	201	Right-handed alpha
Helix 25	25	C	215	224	Right-handed alpha
Helix 26	26	D	20	25	Right-handed 310
Helix 27	27	D	79	85	Right-handed alpha
Helix 28	28	D	106	116	Right-handed alpha
Helix 29	29	D	118	144	Right-handed alpha
Helix 30	30	D	145	162	Right-handed alpha
Helix 31	31	D	176	185	Right-handed alpha
Helix 32	32	D	187	193	Right-handed alpha
Helix 33	33	D	195	200	Right-handed alpha
Helix 34	34	E	1	7	Right-handed alpha
Helix 35	35	E	18	24	Right-handed alpha
Helix 36	36	E	80	85	Right-handed alpha
Helix 37	37	E	106	116	Right-handed alpha
Helix 38	38	E	117	144	Right-handed alpha
Helix 39	39	E	147	161	Right-handed alpha
Helix 40	40	E	176	184	Right-handed alpha
Helix 41	41	E	187	196	Right-handed alpha
Helix 42	42	E	196	201	Right-handed alpha
Helix 43	43	E	215	224	Right-handed alpha
Helix 44	44	F	1	7	Right-handed alpha
Helix 45	45	F	8	12	Right-handed 310
Helix 46	46	F	18	23	Right-handed alpha
Helix 47	47	F	80	85	Right-handed alpha
Helix 48	48	F	106	114	Right-handed alpha
Helix 49	49	F	116	144	Right-handed alpha
Helix 50	50	F	145	162	Right-handed alpha
Helix 51	51	F	176	185	Right-handed alpha
Helix 52	52	F	189	201	Right-handed alpha
Helix 53	53	F	215	224	Right-handed alpha
Helix 54	54	G	1	6	Right-handed alpha
Helix 55	55	G	8	13	Right-handed alpha
Helix 56	56	G	17	22	Right-handed 310
Helix 57	57	G	80	85	Right-handed alpha
Helix 58	58	G	106	116	Right-handed alpha
Helix 59	59	G	117	144	Right-handed alpha
Helix 60	60	G	145	161	Right-handed alpha
Helix 61	61	G	176	185	Right-handed alpha
Helix 62	62	G	187	201	Right-handed alpha
Helix 63	63	G	215	224	Right-handed alpha
Helix 64	64	H	1	8	Right-handed alpha
Helix 65	65	H	9	12	Right-handed 310
Helix 66	66	H	15	25	Right-handed alpha
Helix 67	67	H	80	85	Right-handed alpha
Helix 68	68	H	106	116	Right-handed alpha
Helix 69	69	H	117	144	Right-handed alpha
Helix 70	70	H	145	162	Right-handed alpha
Helix 71	71	H	176	183	Right-handed alpha
Helix 72	72	H	187	195	Right-handed alpha
Helix 73	73	H	219	224	Right-handed alpha

There are 25 sheets in PDB entry 4A2U. Click on sheet of interest to get list of strands forming it: AA, AB, AC, BA, BB, BC, CA, CB, CC, A, DB, C, EA, EB, EC, ED, FA, FB, FC, GA, GB, GC, HA, HB, HC,

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	A	27	31	first strand
Strand 2	A	99	105	anti-parallel
Strand 3	A	46	52	anti-parallel
Strand 4	A	77	78	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	36	38	first strand
Strand 2	A	92	95	anti-parallel
Strand 3	A	55	60	anti-parallel
Strand 4	A	66	72	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	A	163	164	first strand
Strand 2	A	169	171	anti-parallel
Strand 3	A	211	213	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	27	31	first strand
Strand 2	B	99	105	anti-parallel
Strand 3	B	46	52	anti-parallel
Strand 4	B	77	78	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	36	38	first strand
Strand 2	B	92	95	anti-parallel
Strand 3	B	55	60	anti-parallel
Strand 4	B	66	72	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	162	164	first strand
Strand 2	B	169	171	anti-parallel
Strand 3	B	211	213	anti-parallel
Strand 4	B	204	206	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	28	31	first strand
Strand 2	C	99	105	anti-parallel
Strand 3	C	46	52	anti-parallel
Strand 4	C	77	78	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	66	72	first strand
Strand 2	C	55	60	anti-parallel
Strand 3	C	92	95	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	162	165	first strand
Strand 2	C	168	172	anti-parallel
Strand 3	C	210	213	anti-parallel
Strand 4	C	204	206	anti-parallel

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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	D	29	30	first strand
Strand 2	D	100	105	anti-parallel
Strand 3	D	46	52	anti-parallel
Strand 4	D	77	78	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	36	38	first strand
Strand 2	D	92	95	anti-parallel
Strand 3	D	55	60	anti-parallel
Strand 4	D	66	72	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	D	204	205	first strand
Strand 2	D	212	213	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	29	31	first strand
Strand 2	E	99	105	anti-parallel
Strand 3	E	46	52	anti-parallel
Strand 4	E	77	78	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	71	72	first strand
Strand 2	E	55	58	anti-parallel
Strand 3	E	92	95	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	162	163	first strand
Strand 2	E	170	171	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	205	206	first strand
Strand 2	E	211	212	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	27	31	first strand
Strand 2	F	99	105	anti-parallel
Strand 3	F	46	52	anti-parallel
Strand 4	F	77	78	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	36	38	first strand
Strand 2	F	92	95	anti-parallel
Strand 3	F	55	60	anti-parallel
Strand 4	F	66	72	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	163	164	first strand
Strand 2	F	169	172	anti-parallel
Strand 3	F	210	213	anti-parallel
Strand 4	F	204	206	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	G	27	31	first strand
Strand 2	G	99	105	anti-parallel
Strand 3	G	46	52	anti-parallel
Strand 4	G	77	78	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	G	36	38	first strand
Strand 2	G	92	95	anti-parallel
Strand 3	G	55	60	anti-parallel
Strand 4	G	66	72	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	G	162	164	first strand
Strand 2	G	169	172	anti-parallel
Strand 3	G	210	213	anti-parallel
Strand 4	G	204	206	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	27	31	first strand
Strand 2	H	99	105	anti-parallel
Strand 3	H	46	52	anti-parallel
Strand 4	H	77	78	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	36	38	first strand
Strand 2	H	92	95	anti-parallel
Strand 3	H	55	60	anti-parallel
Strand 4	H	66	72	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	170	172	first strand
Strand 2	H	210	213	anti-parallel
Strand 3	H	204	207	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: 4A2U

Analysis of interatomic Contacts of Structural Units in PDB entry:
4A2U