Analysis of interatomic Contacts of Structural Units in PDB entry:
2X31

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 2X31 entry

There are 12 chains in PDB entry 2X31 (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	LYS 4	ALA 192
B	LYS 4	ALA 192
C	LYS 4	ALA 192
D	LYS 4	ALA 192
E	LYS 4	ALA 192
F	LYS 4	ALA 192
G	ARG 18	PRO 350
H	ARG 18	PRO 350
I	ARG 18	PRO 350
J	ARG 18	PRO 350
K	ARG 18	PRO 350
L	ARG 18	PRO 350

There are155 helices in PDB entry 2X31. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	23	40	Right-handed alpha
Helix 2	2	A	66	77	Right-handed alpha
Helix 3	3	A	85	98	Right-handed alpha
Helix 4	4	A	121	127	Right-handed alpha
Helix 5	5	A	128	130	Right-handed 310
Helix 6	6	A	140	145	Right-handed 310
Helix 7	7	A	148	155	Right-handed alpha
Helix 8	8	A	174	189	Right-handed alpha
Helix 9	9	B	23	38	Right-handed alpha
Helix 10	10	B	66	77	Right-handed alpha
Helix 11	11	B	85	95	Right-handed alpha
Helix 12	12	B	121	127	Right-handed alpha
Helix 13	13	B	128	130	Right-handed 310
Helix 14	14	B	148	155	Right-handed alpha
Helix 15	15	B	174	189	Right-handed alpha
Helix 16	16	C	26	40	Right-handed alpha
Helix 17	17	C	66	77	Right-handed alpha
Helix 18	18	C	85	98	Right-handed alpha
Helix 19	19	C	121	128	Right-handed alpha
Helix 20	20	C	140	145	Right-handed 310
Helix 21	21	C	148	155	Right-handed alpha
Helix 22	22	C	174	188	Right-handed alpha
Helix 23	23	D	26	38	Right-handed alpha
Helix 24	24	D	66	77	Right-handed alpha
Helix 25	25	D	85	87	Right-handed 310
Helix 26	26	D	88	95	Right-handed alpha
Helix 27	27	D	121	127	Right-handed alpha
Helix 28	28	D	128	130	Right-handed 310
Helix 29	29	D	140	143	Right-handed 310
Helix 30	30	D	148	155	Right-handed alpha
Helix 31	31	D	174	187	Right-handed alpha
Helix 32	32	E	26	40	Right-handed alpha
Helix 33	33	E	66	77	Right-handed alpha
Helix 34	34	E	85	94	Right-handed alpha
Helix 35	35	E	121	131	Right-handed alpha
Helix 36	36	E	140	145	Right-handed 310
Helix 37	37	E	148	155	Right-handed alpha
Helix 38	38	E	174	188	Right-handed alpha
Helix 39	39	F	26	38	Right-handed alpha
Helix 40	40	F	66	77	Right-handed alpha
Helix 41	41	F	85	95	Right-handed alpha
Helix 42	42	F	121	127	Right-handed alpha
Helix 43	43	F	128	130	Right-handed 310
Helix 44	44	F	140	144	Right-handed 310
Helix 45	45	F	148	155	Right-handed alpha
Helix 46	46	F	162	164	Right-handed 310
Helix 47	47	F	174	189	Right-handed alpha
Helix 48	48	G	29	42	Right-handed alpha
Helix 49	49	G	43	46	Right-handed 310
Helix 50	50	G	53	56	Right-handed 310
Helix 51	51	G	57	66	Right-handed alpha
Helix 52	52	G	67	69	Right-handed 310
Helix 53	53	G	84	88	Right-handed 310
Helix 54	54	G	114	120	Right-handed alpha
Helix 55	55	G	123	128	Right-handed alpha
Helix 56	56	G	129	134	Right-handed 310
Helix 57	57	G	139	143	Right-handed 310
Helix 58	58	G	157	171	Right-handed alpha
Helix 59	59	G	202	209	Right-handed alpha
Helix 60	60	G	221	233	Right-handed alpha
Helix 61	61	G	240	263	Right-handed alpha
Helix 62	62	G	268	284	Right-handed alpha
Helix 63	63	G	287	306	Right-handed alpha
Helix 64	64	G	311	323	Right-handed alpha
Helix 65	65	G	344	349	Right-handed alpha
Helix 66	66	H	31	42	Right-handed alpha
Helix 67	67	H	43	46	Right-handed 310
Helix 68	68	H	57	69	Right-handed alpha
Helix 69	69	H	84	88	Right-handed 310
Helix 70	70	H	114	119	Right-handed alpha
Helix 71	71	H	123	131	Right-handed alpha
Helix 72	72	H	139	144	Right-handed 310
Helix 73	73	H	157	171	Right-handed alpha
Helix 74	74	H	203	209	Right-handed alpha
Helix 75	75	H	222	233	Right-handed alpha
Helix 76	76	H	237	243	Right-handed alpha
Helix 77	77	H	244	246	Right-handed 310
Helix 78	78	H	247	267	Right-handed alpha
Helix 79	79	H	271	282	Right-handed alpha
Helix 80	80	H	288	306	Right-handed alpha
Helix 81	81	H	311	323	Right-handed alpha
Helix 82	82	H	324	327	Right-handed 310
Helix 83	83	H	344	349	Right-handed alpha
Helix 84	84	I	29	42	Right-handed alpha
Helix 85	85	I	43	46	Right-handed 310
Helix 86	86	I	53	56	Right-handed 310
Helix 87	87	I	57	66	Right-handed alpha
Helix 88	88	I	67	69	Right-handed 310
Helix 89	89	I	84	88	Right-handed 310
Helix 90	90	I	114	120	Right-handed alpha
Helix 91	91	I	123	128	Right-handed alpha
Helix 92	92	I	129	134	Right-handed 310
Helix 93	93	I	139	143	Right-handed 310
Helix 94	94	I	157	171	Right-handed alpha
Helix 95	95	I	202	209	Right-handed alpha
Helix 96	96	I	221	233	Right-handed alpha
Helix 97	97	I	240	263	Right-handed alpha
Helix 98	98	I	268	284	Right-handed alpha
Helix 99	99	I	287	306	Right-handed alpha
Helix 100	100	I	311	323	Right-handed alpha
Helix 101	101	I	344	349	Right-handed alpha
Helix 102	102	J	31	42	Right-handed alpha
Helix 103	103	J	43	46	Right-handed 310
Helix 104	104	J	57	69	Right-handed alpha
Helix 105	105	J	84	88	Right-handed 310
Helix 106	106	J	114	119	Right-handed alpha
Helix 107	107	J	123	131	Right-handed alpha
Helix 108	108	J	139	144	Right-handed 310
Helix 109	109	J	157	171	Right-handed alpha
Helix 110	110	J	203	209	Right-handed alpha
Helix 111	111	J	222	233	Right-handed alpha
Helix 112	112	J	237	243	Right-handed alpha
Helix 113	113	J	244	246	Right-handed 310
Helix 114	114	J	247	267	Right-handed alpha
Helix 115	115	J	271	282	Right-handed alpha
Helix 116	116	J	288	306	Right-handed alpha
Helix 117	117	J	311	323	Right-handed alpha
Helix 118	118	J	324	327	Right-handed 310
Helix 119	119	J	344	349	Right-handed alpha
Helix 120	120	K	29	42	Right-handed alpha
Helix 121	121	K	43	46	Right-handed 310
Helix 122	122	K	53	56	Right-handed 310
Helix 123	123	K	57	66	Right-handed alpha
Helix 124	124	K	67	69	Right-handed 310
Helix 125	125	K	84	88	Right-handed 310
Helix 126	126	K	114	120	Right-handed alpha
Helix 127	127	K	123	128	Right-handed alpha
Helix 128	128	K	129	134	Right-handed 310
Helix 129	129	K	139	143	Right-handed 310
Helix 130	130	K	157	171	Right-handed alpha
Helix 131	131	K	202	209	Right-handed alpha
Helix 132	132	K	221	233	Right-handed alpha
Helix 133	133	K	240	263	Right-handed alpha
Helix 134	134	K	268	284	Right-handed alpha
Helix 135	135	K	287	306	Right-handed alpha
Helix 136	136	K	311	323	Right-handed alpha
Helix 137	137	K	344	349	Right-handed alpha
Helix 138	138	L	31	42	Right-handed alpha
Helix 139	139	L	43	46	Right-handed 310
Helix 140	140	L	57	69	Right-handed alpha
Helix 141	141	L	84	88	Right-handed 310
Helix 142	142	L	114	119	Right-handed alpha
Helix 143	143	L	123	131	Right-handed alpha
Helix 144	144	L	139	144	Right-handed 310
Helix 145	145	L	157	171	Right-handed alpha
Helix 146	146	L	203	209	Right-handed alpha
Helix 147	147	L	222	233	Right-handed alpha
Helix 148	148	L	237	243	Right-handed alpha
Helix 149	149	L	244	246	Right-handed 310
Helix 150	150	L	247	267	Right-handed alpha
Helix 151	151	L	271	282	Right-handed alpha
Helix 152	152	L	288	306	Right-handed alpha
Helix 153	153	L	311	323	Right-handed alpha
Helix 154	154	L	324	327	Right-handed 310
Helix 155	155	L	344	349	Right-handed alpha

There are 27 sheets in PDB entry 2X31. Click on sheet of interest to get list of strands forming it: AA, BA, CA, A, EA, FA, GA, GB, GC, HA, HB, HC, HD, IA, IB, IC, JA, JB, JC, JD, KA, KB, KC, LA, LB, LC, LD,

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	A	49	52	first strand
Strand 2	A	10	16	parallel
Strand 3	A	106	110	parallel
Strand 4	A	134	138	parallel
Strand 5	A	166	169	parallel

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There are 5 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	45	49	first strand
Strand 2	B	9	14	parallel
Strand 3	B	106	110	parallel
Strand 4	B	134	138	parallel
Strand 5	B	166	169	parallel

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There are 5 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	48	49	first strand
Strand 2	C	11	14	first strand
Strand 3	C	107	110	parallel
Strand 4	C	134	138	parallel
Strand 5	C	166	169	parallel

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There are 5 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	48	49	first strand
Strand 2	D	10	14	parallel
Strand 3	D	106	110	parallel
Strand 4	D	134	138	parallel
Strand 5	D	166	169	parallel

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There are 5 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	49	52	first strand
Strand 2	E	10	16	parallel
Strand 3	E	106	110	parallel
Strand 4	E	133	138	parallel
Strand 5	E	166	169	parallel

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There are 5 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	46	52	first strand
Strand 2	F	10	16	parallel
Strand 3	F	106	110	parallel
Strand 4	F	134	138	parallel
Strand 5	F	166	169	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	48	50	first strand
Strand 2	G	189	193	parallel
Strand 3	G	147	150	parallel
Strand 4	G	106	109	parallel

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There are 2 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	73	75	first strand
Strand 2	G	99	101	anti-parallel

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There are 2 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	175	177	first strand
Strand 2	G	180	182	anti-parallel

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There are 5 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	106	109	first strand
Strand 2	H	147	152	parallel
Strand 3	H	189	193	parallel
Strand 4	H	48	50	parallel
Strand 5	H	211	213	parallel

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There are 2 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	72	75	first strand
Strand 2	H	99	102	anti-parallel

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There are 2 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	120	122	first strand
Strand 2	H	135	137	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	175	176	first strand
Strand 2	H	181	182	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	I	48	50	first strand
Strand 2	I	189	193	parallel
Strand 3	I	147	150	parallel
Strand 4	I	106	109	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	I	73	75	first strand
Strand 2	I	99	101	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	I	175	177	first strand
Strand 2	I	180	182	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	J	106	109	first strand
Strand 2	J	147	152	parallel
Strand 3	J	189	193	parallel
Strand 4	J	48	50	parallel
Strand 5	J	211	213	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	J	72	75	first strand
Strand 2	J	99	102	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	J	120	122	first strand
Strand 2	J	135	137	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	J	175	176	first strand
Strand 2	J	181	182	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	K	48	50	first strand
Strand 2	K	189	193	parallel
Strand 3	K	147	150	parallel
Strand 4	K	106	109	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	K	73	75	first strand
Strand 2	K	99	101	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	K	175	177	first strand
Strand 2	K	180	182	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	L	106	109	first strand
Strand 2	L	147	152	parallel
Strand 3	L	189	193	parallel
Strand 4	L	48	50	parallel
Strand 5	L	211	213	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	L	72	75	first strand
Strand 2	L	99	102	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	L	120	122	first strand
Strand 2	L	135	137	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	L	175	176	first strand
Strand 2	L	181	182	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: 2X31

Analysis of interatomic Contacts of Structural Units in PDB entry:
2X31