Analysis of interatomic Contacts of Structural Units in PDB entry:
1NQA

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 1NQA entry

There are 4 chains in PDB entry 1NQA (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
O	ALA 0	LEU 333
P	ALA 0	LEU 333
Q	ALA 0	LEU 333
R	ALA 0	LEU 333

There are 57 helices in PDB entry 1NQA. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	O	9	20	Right-handed alpha
Helix 2	2	O	36	46	Right-handed alpha
Helix 3	3	O	78	82	Right-handed 310
Helix 4	4	O	84	88	Right-handed 310
Helix 5	5	O	101	106	Right-handed alpha
Helix 6	6	O	106	111	Right-handed alpha
Helix 7	7	O	133	137	Right-handed 310
Helix 8	8	O	148	166	Right-handed alpha
Helix 9	9	O	209	214	Right-handed alpha
Helix 10	10	O	215	217	Right-handed 310
Helix 11	11	O	218	222	Right-handed 310
Helix 12	12	O	251	265	Right-handed alpha
Helix 13	13	O	279	284	Right-handed 310
Helix 14	14	O	295	297	Right-handed 310
Helix 15	15	O	314	331	Right-handed alpha
Helix 16	16	P	9	20	Right-handed alpha
Helix 17	17	P	36	45	Right-handed alpha
Helix 18	18	P	78	82	Right-handed 310
Helix 19	19	P	83	88	Right-handed 310
Helix 20	20	P	101	106	Right-handed alpha
Helix 21	21	P	106	111	Right-handed alpha
Helix 22	22	P	133	137	Right-handed 310
Helix 23	23	P	148	165	Right-handed alpha
Helix 24	24	P	209	218	Right-handed alpha
Helix 25	25	P	219	222	Right-handed 310
Helix 26	26	P	251	265	Right-handed alpha
Helix 27	27	P	279	284	Right-handed 310
Helix 28	28	P	295	297	Right-handed 310
Helix 29	29	P	314	331	Right-handed alpha
Helix 30	30	Q	9	21	Right-handed alpha
Helix 31	31	Q	36	45	Right-handed alpha
Helix 32	32	Q	78	82	Right-handed 310
Helix 33	33	Q	84	88	Right-handed 310
Helix 34	34	Q	101	106	Right-handed alpha
Helix 35	35	Q	106	111	Right-handed alpha
Helix 36	36	Q	133	137	Right-handed 310
Helix 37	37	Q	148	166	Right-handed alpha
Helix 38	38	Q	209	218	Right-handed alpha
Helix 39	39	Q	219	222	Right-handed 310
Helix 40	40	Q	251	265	Right-handed alpha
Helix 41	41	Q	279	284	Right-handed 310
Helix 42	42	Q	295	297	Right-handed 310
Helix 43	43	Q	314	331	Right-handed alpha
Helix 44	44	R	9	21	Right-handed alpha
Helix 45	45	R	36	45	Right-handed alpha
Helix 46	46	R	78	82	Right-handed 310
Helix 47	47	R	84	88	Right-handed 310
Helix 48	48	R	101	106	Right-handed alpha
Helix 49	49	R	106	111	Right-handed alpha
Helix 50	50	R	133	137	Right-handed 310
Helix 51	51	R	148	165	Right-handed alpha
Helix 52	52	R	209	218	Right-handed alpha
Helix 53	53	R	219	222	Right-handed 310
Helix 54	54	R	251	265	Right-handed alpha
Helix 55	55	R	279	284	Right-handed 310
Helix 56	56	R	295	297	Right-handed 310
Helix 57	57	R	314	331	Right-handed alpha

There are 15 sheets in PDB entry 1NQA. 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,

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	O	57	60	first strand
Strand 2	O	63	66	anti-parallel
Strand 3	O	69	74	anti-parallel
Strand 4	O	25	31	parallel
Strand 5	O	1	6	parallel
Strand 6	O	91	94	parallel
Strand 7	O	115	118	parallel
Strand 8	O	143	145	parallel
Strand 9	O	126	127	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	O	204	207	first strand
Strand 2	O	225	232	anti-parallel
Strand 3	O	167	177	parallel
Strand 4	O	238	246	anti-parallel
Strand 5	O	304	311	anti-parallel
Strand 6	O	290	293	anti-parallel
Strand 7	O	271	274	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	O	204	207	first strand
Strand 2	O	225	232	anti-parallel
Strand 3	O	167	177	parallel
Strand 4	O	238	246	anti-parallel
Strand 5	O	304	311	anti-parallel
Strand 6	O	298	300	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	P	57	60	first strand
Strand 2	P	63	66	anti-parallel
Strand 3	P	69	74	anti-parallel
Strand 4	P	25	31	parallel
Strand 5	P	1	6	parallel
Strand 6	P	91	94	parallel
Strand 7	P	115	118	parallel
Strand 8	P	143	145	parallel
Strand 9	P	126	127	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	P	46	47	first strand
Strand 2	P	51	52	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	P	204	206	first strand
Strand 2	P	225	232	anti-parallel
Strand 3	P	167	177	parallel
Strand 4	P	238	246	anti-parallel
Strand 5	P	304	311	anti-parallel
Strand 6	P	290	293	anti-parallel
Strand 7	P	271	274	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	P	204	206	first strand
Strand 2	P	225	232	anti-parallel
Strand 3	P	167	177	parallel
Strand 4	P	238	246	anti-parallel
Strand 5	P	304	311	anti-parallel
Strand 6	P	298	300	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	Q	57	60	first strand
Strand 2	Q	63	66	anti-parallel
Strand 3	Q	69	74	anti-parallel
Strand 4	Q	25	31	parallel
Strand 5	Q	1	6	parallel
Strand 6	Q	91	94	parallel
Strand 7	Q	115	118	parallel
Strand 8	Q	143	145	parallel
Strand 9	Q	126	127	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	Q	46	47	first strand
Strand 2	Q	51	52	anti-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	Q	204	206	first strand
Strand 2	Q	225	232	anti-parallel
Strand 3	Q	167	177	parallel
Strand 4	Q	238	246	anti-parallel
Strand 5	Q	304	311	anti-parallel
Strand 6	Q	290	293	anti-parallel
Strand 7	Q	271	274	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	Q	204	206	first strand
Strand 2	Q	225	232	anti-parallel
Strand 3	Q	167	177	parallel
Strand 4	Q	238	246	anti-parallel
Strand 5	Q	304	311	anti-parallel
Strand 6	Q	298	300	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	R	57	60	first strand
Strand 2	R	63	66	anti-parallel
Strand 3	R	69	74	anti-parallel
Strand 4	R	25	31	parallel
Strand 5	R	1	6	parallel
Strand 6	R	91	94	parallel
Strand 7	R	115	118	parallel
Strand 8	R	143	145	parallel
Strand 9	R	126	127	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	R	46	47	first strand
Strand 2	R	51	52	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	R	204	207	first strand
Strand 2	R	225	232	anti-parallel
Strand 3	R	167	177	parallel
Strand 4	R	238	246	anti-parallel
Strand 5	R	304	311	anti-parallel
Strand 6	R	290	293	anti-parallel
Strand 7	R	271	274	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	R	204	207	first strand
Strand 2	R	225	232	anti-parallel
Strand 3	R	167	177	parallel
Strand 4	R	238	246	anti-parallel
Strand 5	R	304	311	anti-parallel
Strand 6	R	298	300	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: 1NQA

Analysis of interatomic Contacts of Structural Units in PDB entry:
1NQA