Analysis of interatomic Contacts of Structural Units in PDB entry:
1A9C

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 1A9C entry

There are 15 chains in PDB entry 1A9C (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	PRO 1	ASN 221
B	PRO 1	ASN 221
C	PRO 1	ASN 221
D	PRO 1	ASN 221
E	PRO 1	ASN 221
F	PRO 1	ASN 221
G	PRO 1	ASN 221
H	PRO 1	ASN 221
I	PRO 1	ASN 221
J	PRO 1	ASN 221
K	PRO 1	ASN 221
L	PRO 1	ASN 221
M	PRO 1	ASN 221
N	PRO 1	ASN 221
O	PRO 1	ASN 221

There are150 helices in PDB entry 1A9C. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	5	17	Right-handed alpha
Helix 2	2	A	32	49	Right-handed alpha
Helix 3	3	A	59	72	Right-handed 310
Helix 4	4	A	76	78	Right-handed 310
Helix 5	5	A	80	82	Right-handed 310
Helix 6	6	A	134	145	Right-handed alpha
Helix 7	7	A	151	166	Right-handed alpha
Helix 8	8	A	180	183	Right-handed alpha
Helix 9	9	A	201	205	Right-handed 310
Helix 10	10	A	207	216	Right-handed alpha
Helix 11	11	B	5	17	Right-handed alpha
Helix 12	12	B	32	49	Right-handed alpha
Helix 13	13	B	59	72	Right-handed 310
Helix 14	14	B	76	78	Right-handed 310
Helix 15	15	B	80	82	Right-handed 310
Helix 16	16	B	134	145	Right-handed alpha
Helix 17	17	B	151	166	Right-handed alpha
Helix 18	18	B	180	183	Right-handed alpha
Helix 19	19	B	201	205	Right-handed 310
Helix 20	20	B	207	216	Right-handed alpha
Helix 21	21	C	5	17	Right-handed alpha
Helix 22	22	C	32	49	Right-handed alpha
Helix 23	23	C	59	72	Right-handed 310
Helix 24	24	C	76	78	Right-handed 310
Helix 25	25	C	80	82	Right-handed 310
Helix 26	26	C	134	145	Right-handed alpha
Helix 27	27	C	151	166	Right-handed alpha
Helix 28	28	C	180	183	Right-handed alpha
Helix 29	29	C	201	205	Right-handed 310
Helix 30	30	C	207	216	Right-handed alpha
Helix 31	31	D	5	17	Right-handed alpha
Helix 32	32	D	32	49	Right-handed alpha
Helix 33	33	D	59	72	Right-handed 310
Helix 34	34	D	76	78	Right-handed 310
Helix 35	35	D	80	82	Right-handed 310
Helix 36	36	D	134	145	Right-handed alpha
Helix 37	37	D	151	166	Right-handed alpha
Helix 38	38	D	180	183	Right-handed alpha
Helix 39	39	D	201	205	Right-handed 310
Helix 40	40	D	207	216	Right-handed alpha
Helix 41	41	E	5	17	Right-handed alpha
Helix 42	42	E	32	49	Right-handed alpha
Helix 43	43	E	59	72	Right-handed 310
Helix 44	44	E	76	78	Right-handed 310
Helix 45	45	E	80	82	Right-handed 310
Helix 46	46	E	134	145	Right-handed alpha
Helix 47	47	E	151	166	Right-handed alpha
Helix 48	48	E	180	183	Right-handed alpha
Helix 49	49	E	201	205	Right-handed 310
Helix 50	50	E	207	216	Right-handed alpha
Helix 51	51	F	5	17	Right-handed alpha
Helix 52	52	F	32	49	Right-handed alpha
Helix 53	53	F	59	72	Right-handed 310
Helix 54	54	F	76	78	Right-handed 310
Helix 55	55	F	80	82	Right-handed 310
Helix 56	56	F	134	145	Right-handed alpha
Helix 57	57	F	151	166	Right-handed alpha
Helix 58	58	F	180	183	Right-handed alpha
Helix 59	59	F	201	205	Right-handed 310
Helix 60	60	F	207	216	Right-handed alpha
Helix 61	61	G	5	17	Right-handed alpha
Helix 62	62	G	32	49	Right-handed alpha
Helix 63	63	G	59	72	Right-handed 310
Helix 64	64	G	76	78	Right-handed 310
Helix 65	65	G	80	82	Right-handed 310
Helix 66	66	G	134	145	Right-handed alpha
Helix 67	67	G	151	166	Right-handed alpha
Helix 68	68	G	180	183	Right-handed alpha
Helix 69	69	G	201	205	Right-handed 310
Helix 70	70	G	207	216	Right-handed alpha
Helix 71	71	H	5	17	Right-handed alpha
Helix 72	72	H	32	49	Right-handed alpha
Helix 73	73	H	59	72	Right-handed 310
Helix 74	74	H	76	78	Right-handed 310
Helix 75	75	H	80	82	Right-handed 310
Helix 76	76	H	134	145	Right-handed alpha
Helix 77	77	H	151	166	Right-handed alpha
Helix 78	78	H	180	183	Right-handed alpha
Helix 79	79	H	201	205	Right-handed 310
Helix 80	80	H	207	216	Right-handed alpha
Helix 81	81	I	5	17	Right-handed alpha
Helix 82	82	I	32	49	Right-handed alpha
Helix 83	83	I	59	72	Right-handed 310
Helix 84	84	I	76	78	Right-handed 310
Helix 85	85	I	80	82	Right-handed 310
Helix 86	86	I	134	145	Right-handed alpha
Helix 87	87	I	151	166	Right-handed alpha
Helix 88	88	I	180	183	Right-handed alpha
Helix 89	89	I	201	205	Right-handed 310
Helix 90	90	I	207	216	Right-handed alpha
Helix 91	91	J	5	17	Right-handed alpha
Helix 92	92	J	32	49	Right-handed alpha
Helix 93	93	J	59	72	Right-handed 310
Helix 94	94	J	76	78	Right-handed 310
Helix 95	95	J	80	82	Right-handed 310
Helix 96	96	J	134	145	Right-handed alpha
Helix 97	97	J	151	166	Right-handed alpha
Helix 98	98	J	180	183	Right-handed alpha
Helix 99	99	J	201	205	Right-handed 310
Helix 100	100	J	207	216	Right-handed alpha
Helix 101	101	K	5	17	Right-handed alpha
Helix 102	102	K	32	49	Right-handed alpha
Helix 103	103	K	59	72	Right-handed 310
Helix 104	104	K	76	78	Right-handed 310
Helix 105	105	K	80	82	Right-handed 310
Helix 106	106	K	134	145	Right-handed alpha
Helix 107	107	K	151	166	Right-handed alpha
Helix 108	108	K	180	183	Right-handed alpha
Helix 109	109	K	201	205	Right-handed 310
Helix 110	110	K	207	216	Right-handed alpha
Helix 111	111	L	5	17	Right-handed alpha
Helix 112	112	L	32	49	Right-handed alpha
Helix 113	113	L	59	72	Right-handed 310
Helix 114	114	L	76	78	Right-handed 310
Helix 115	115	L	80	82	Right-handed 310
Helix 116	116	L	134	145	Right-handed alpha
Helix 117	117	L	151	166	Right-handed alpha
Helix 118	118	L	180	183	Right-handed alpha
Helix 119	119	L	201	205	Right-handed 310
Helix 120	120	L	207	216	Right-handed alpha
Helix 121	121	M	5	17	Right-handed alpha
Helix 122	122	M	32	49	Right-handed alpha
Helix 123	123	M	59	72	Right-handed 310
Helix 124	124	M	76	78	Right-handed 310
Helix 125	125	M	80	82	Right-handed 310
Helix 126	126	M	134	145	Right-handed alpha
Helix 127	127	M	151	166	Right-handed alpha
Helix 128	128	M	180	183	Right-handed alpha
Helix 129	129	M	201	205	Right-handed 310
Helix 130	130	M	207	216	Right-handed alpha
Helix 131	131	N	5	17	Right-handed alpha
Helix 132	132	N	32	49	Right-handed alpha
Helix 133	133	N	59	72	Right-handed 310
Helix 134	134	N	76	78	Right-handed 310
Helix 135	135	N	80	82	Right-handed 310
Helix 136	136	N	134	145	Right-handed alpha
Helix 137	137	N	151	166	Right-handed alpha
Helix 138	138	N	180	183	Right-handed alpha
Helix 139	139	N	201	205	Right-handed 310
Helix 140	140	N	207	216	Right-handed alpha
Helix 141	141	O	5	17	Right-handed alpha
Helix 142	142	O	32	49	Right-handed alpha
Helix 143	143	O	59	72	Right-handed 310
Helix 144	144	O	76	78	Right-handed 310
Helix 145	145	O	80	82	Right-handed 310
Helix 146	146	O	134	145	Right-handed alpha
Helix 147	147	O	151	166	Right-handed alpha
Helix 148	148	O	180	183	Right-handed alpha
Helix 149	149	O	201	205	Right-handed 310
Helix 150	150	O	207	216	Right-handed alpha

There are 45 sheets in PDB entry 1A9C. 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, AK, AL, AM, AN, AO, AP, AQ, AR, AS,

There are 2 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	88	90	first strand
Strand 2	A	130	132	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	98	101	first strand
Strand 2	A	117	126	anti-parallel
Strand 3	A	171	179	anti-parallel
Strand 4	A	194	199	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	104	109	first strand
Strand 2	A	116	121	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	B	88	90	first strand
Strand 2	B	130	132	anti-parallel

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There are 4 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	98	101	first strand
Strand 2	B	117	126	anti-parallel
Strand 3	B	171	179	anti-parallel
Strand 4	B	194	199	anti-parallel

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There are 2 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	104	109	first strand
Strand 2	B	116	121	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	88	90	first strand
Strand 2	C	130	132	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	C	98	101	first strand
Strand 2	C	117	126	anti-parallel
Strand 3	C	171	179	anti-parallel
Strand 4	C	194	199	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	C	104	109	first strand
Strand 2	C	116	121	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	88	90	first strand
Strand 2	D	130	132	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	D	98	101	first strand
Strand 2	D	117	126	anti-parallel
Strand 3	D	171	179	anti-parallel
Strand 4	D	194	199	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	D	104	109	first strand
Strand 2	D	116	121	anti-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	E	88	90	first strand
Strand 2	E	130	132	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	E	98	101	first strand
Strand 2	E	117	126	anti-parallel
Strand 3	E	171	179	anti-parallel
Strand 4	E	194	199	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	104	109	first strand
Strand 2	E	116	121	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	F	88	90	first strand
Strand 2	F	130	132	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	98	101	first strand
Strand 2	F	117	126	anti-parallel
Strand 3	F	171	179	anti-parallel
Strand 4	F	194	199	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	104	109	first strand
Strand 2	F	116	121	anti-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	G	88	90	first strand
Strand 2	G	130	132	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	G	98	101	first strand
Strand 2	G	117	126	anti-parallel
Strand 3	G	171	179	anti-parallel
Strand 4	G	194	199	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	G	104	109	first strand
Strand 2	G	116	121	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	88	90	first strand
Strand 2	H	130	132	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	H	98	101	first strand
Strand 2	H	117	126	anti-parallel
Strand 3	H	171	179	anti-parallel
Strand 4	H	194	199	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	H	104	109	first strand
Strand 2	H	116	121	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	I	88	90	first strand
Strand 2	I	130	132	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	I	98	101	first strand
Strand 2	I	117	126	anti-parallel
Strand 3	I	171	179	anti-parallel
Strand 4	I	194	199	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	I	104	109	first strand
Strand 2	I	116	121	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	J	88	90	first strand
Strand 2	J	130	132	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	J	98	101	first strand
Strand 2	J	117	126	anti-parallel
Strand 3	J	171	179	anti-parallel
Strand 4	J	194	199	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	J	104	109	first strand
Strand 2	J	116	121	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	K	88	90	first strand
Strand 2	K	130	132	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	K	98	101	first strand
Strand 2	K	117	126	anti-parallel
Strand 3	K	171	179	anti-parallel
Strand 4	K	194	199	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	K	104	109	first strand
Strand 2	K	116	121	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	L	88	90	first strand
Strand 2	L	130	132	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	L	98	101	first strand
Strand 2	L	117	126	anti-parallel
Strand 3	L	171	179	anti-parallel
Strand 4	L	194	199	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	L	104	109	first strand
Strand 2	L	116	121	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	M	88	90	first strand
Strand 2	M	130	132	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	M	98	101	first strand
Strand 2	M	117	126	anti-parallel
Strand 3	M	171	179	anti-parallel
Strand 4	M	194	199	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	M	104	109	first strand
Strand 2	M	116	121	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	N	88	90	first strand
Strand 2	N	130	132	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	N	98	101	first strand
Strand 2	N	117	126	anti-parallel
Strand 3	N	171	179	anti-parallel
Strand 4	N	194	199	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	N	104	110	first strand
Strand 2	N	115	121	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	O	88	90	first strand
Strand 2	O	130	132	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	O	98	101	first strand
Strand 2	O	117	126	anti-parallel
Strand 3	O	171	179	anti-parallel
Strand 4	O	194	199	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	O	104	109	first strand
Strand 2	O	116	121	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: 1A9C

Analysis of interatomic Contacts of Structural Units in PDB entry:
1A9C