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

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 2XKB entry

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

Chain ID	Initial residue	Terminal residue
A	MET 1	ALA 406
B	MET 1	THR 421
C	MET 1	LYS 414
D	MET 1	LYS 409
E	MET 1	LYS 414
F	LEU 3	ASP 411
G	MET 1	THR 421
H	MET 1	ALA 420
I	MET 1	ALA 420
J	VAL 2	ASP 411
K	VAL 2	LYS 414
L	VAL 2	GLU 400

There are202 helices in PDB entry 2XKB. 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	15	Right-handed alpha
Helix 2	2	A	31	44	Right-handed alpha
Helix 3	3	A	72	74	Right-handed 310
Helix 4	4	A	88	95	Right-handed alpha
Helix 5	5	A	104	120	Right-handed alpha
Helix 6	6	A	140	155	Right-handed alpha
Helix 7	7	A	172	197	Right-handed alpha
Helix 8	8	A	213	223	Right-handed alpha
Helix 9	9	A	235	258	Right-handed alpha
Helix 10	10	A	266	276	Right-handed alpha
Helix 11	11	A	292	306	Right-handed alpha
Helix 12	12	A	314	318	Right-handed 310
Helix 13	13	A	332	335	Right-handed 310
Helix 14	14	A	336	349	Right-handed alpha
Helix 15	15	A	352	356	Right-handed 310
Helix 16	16	A	383	406	Right-handed alpha
Helix 17	17	B	5	15	Right-handed alpha
Helix 18	18	B	31	44	Right-handed alpha
Helix 19	19	B	61	65	Right-handed 310
Helix 20	20	B	72	74	Right-handed 310
Helix 21	21	B	89	94	Right-handed alpha
Helix 22	22	B	95	97	Right-handed 310
Helix 23	23	B	102	105	Right-handed 310
Helix 24	24	B	106	120	Right-handed alpha
Helix 25	25	B	140	155	Right-handed alpha
Helix 26	26	B	172	197	Right-handed alpha
Helix 27	27	B	213	221	Right-handed alpha
Helix 28	28	B	235	258	Right-handed alpha
Helix 29	29	B	266	276	Right-handed alpha
Helix 30	30	B	292	306	Right-handed alpha
Helix 31	31	B	314	318	Right-handed 310
Helix 32	32	B	331	335	Right-handed 310
Helix 33	33	B	336	349	Right-handed alpha
Helix 34	34	B	352	356	Right-handed 310
Helix 35	35	B	383	408	Right-handed alpha
Helix 36	36	C	5	15	Right-handed alpha
Helix 37	37	C	31	44	Right-handed alpha
Helix 38	38	C	62	66	Right-handed 310
Helix 39	39	C	72	74	Right-handed 310
Helix 40	40	C	106	120	Right-handed alpha
Helix 41	41	C	139	155	Right-handed alpha
Helix 42	42	C	172	197	Right-handed alpha
Helix 43	43	C	213	223	Right-handed alpha
Helix 44	44	C	230	234	Right-handed 310
Helix 45	45	C	235	258	Right-handed alpha
Helix 46	46	C	266	276	Right-handed alpha
Helix 47	47	C	292	306	Right-handed alpha
Helix 48	48	C	314	318	Right-handed 310
Helix 49	49	C	331	336	Right-handed alpha
Helix 50	50	C	336	349	Right-handed alpha
Helix 51	51	C	352	356	Right-handed 310
Helix 52	52	C	383	413	Right-handed alpha
Helix 53	53	D	5	15	Right-handed alpha
Helix 54	54	D	31	44	Right-handed alpha
Helix 55	55	D	72	74	Right-handed 310
Helix 56	56	D	90	95	Right-handed alpha
Helix 57	57	D	103	120	Right-handed alpha
Helix 58	58	D	141	155	Right-handed alpha
Helix 59	59	D	172	197	Right-handed alpha
Helix 60	60	D	213	221	Right-handed alpha
Helix 61	61	D	235	258	Right-handed alpha
Helix 62	62	D	266	276	Right-handed alpha
Helix 63	63	D	292	306	Right-handed alpha
Helix 64	64	D	314	318	Right-handed 310
Helix 65	65	D	331	336	Right-handed alpha
Helix 66	66	D	336	349	Right-handed alpha
Helix 67	67	D	352	356	Right-handed 310
Helix 68	68	D	383	409	Right-handed alpha
Helix 69	69	E	5	15	Right-handed alpha
Helix 70	70	E	31	44	Right-handed alpha
Helix 71	71	E	61	65	Right-handed 310
Helix 72	72	E	72	74	Right-handed 310
Helix 73	73	E	91	96	Right-handed alpha
Helix 74	74	E	103	119	Right-handed alpha
Helix 75	75	E	140	155	Right-handed alpha
Helix 76	76	E	172	197	Right-handed alpha
Helix 77	77	E	213	223	Right-handed alpha
Helix 78	78	E	235	258	Right-handed alpha
Helix 79	79	E	266	276	Right-handed alpha
Helix 80	80	E	292	306	Right-handed alpha
Helix 81	81	E	314	318	Right-handed 310
Helix 82	82	E	336	349	Right-handed alpha
Helix 83	83	E	352	356	Right-handed 310
Helix 84	84	E	383	409	Right-handed alpha
Helix 85	85	F	5	13	Right-handed alpha
Helix 86	86	F	31	44	Right-handed alpha
Helix 87	87	F	61	66	Right-handed alpha
Helix 88	88	F	72	74	Right-handed 310
Helix 89	89	F	103	120	Right-handed alpha
Helix 90	90	F	140	155	Right-handed alpha
Helix 91	91	F	172	197	Right-handed alpha
Helix 92	92	F	213	223	Right-handed alpha
Helix 93	93	F	235	258	Right-handed alpha
Helix 94	94	F	266	276	Right-handed alpha
Helix 95	95	F	292	306	Right-handed alpha
Helix 96	96	F	314	318	Right-handed 310
Helix 97	97	F	331	335	Right-handed 310
Helix 98	98	F	336	347	Right-handed alpha
Helix 99	99	F	348	350	Right-handed 310
Helix 100	100	F	352	356	Right-handed 310
Helix 101	101	F	383	409	Right-handed alpha
Helix 102	102	G	5	15	Right-handed alpha
Helix 103	103	G	31	44	Right-handed alpha
Helix 104	104	G	61	65	Right-handed 310
Helix 105	105	G	72	74	Right-handed 310
Helix 106	106	G	90	95	Right-handed alpha
Helix 107	107	G	103	119	Right-handed alpha
Helix 108	108	G	140	155	Right-handed alpha
Helix 109	109	G	172	195	Right-handed alpha
Helix 110	110	G	213	223	Right-handed alpha
Helix 111	111	G	235	258	Right-handed alpha
Helix 112	112	G	266	276	Right-handed alpha
Helix 113	113	G	292	306	Right-handed alpha
Helix 114	114	G	314	318	Right-handed 310
Helix 115	115	G	339	349	Right-handed alpha
Helix 116	116	G	352	356	Right-handed 310
Helix 117	117	G	383	397	Right-handed alpha
Helix 118	118	G	397	405	Right-handed alpha
Helix 119	119	H	5	13	Right-handed alpha
Helix 120	120	H	31	44	Right-handed alpha
Helix 121	121	H	61	65	Right-handed 310
Helix 122	122	H	72	74	Right-handed 310
Helix 123	123	H	91	96	Right-handed alpha
Helix 124	124	H	104	120	Right-handed alpha
Helix 125	125	H	144	155	Right-handed alpha
Helix 126	126	H	172	197	Right-handed alpha
Helix 127	127	H	213	223	Right-handed alpha
Helix 128	128	H	235	258	Right-handed alpha
Helix 129	129	H	266	276	Right-handed alpha
Helix 130	130	H	292	306	Right-handed alpha
Helix 131	131	H	314	318	Right-handed 310
Helix 132	132	H	331	335	Right-handed 310
Helix 133	133	H	336	349	Right-handed alpha
Helix 134	134	H	352	356	Right-handed 310
Helix 135	135	H	383	418	Right-handed alpha
Helix 136	136	I	5	15	Right-handed alpha
Helix 137	137	I	31	44	Right-handed alpha
Helix 138	138	I	61	65	Right-handed 310
Helix 139	139	I	72	74	Right-handed 310
Helix 140	140	I	89	95	Right-handed alpha
Helix 141	141	I	101	103	Right-handed 310
Helix 142	142	I	104	120	Right-handed alpha
Helix 143	143	I	139	155	Right-handed alpha
Helix 144	144	I	172	197	Right-handed alpha
Helix 145	145	I	213	223	Right-handed alpha
Helix 146	146	I	235	258	Right-handed alpha
Helix 147	147	I	266	276	Right-handed alpha
Helix 148	148	I	293	306	Right-handed alpha
Helix 149	149	I	314	318	Right-handed 310
Helix 150	150	I	336	349	Right-handed alpha
Helix 151	151	I	352	356	Right-handed 310
Helix 152	152	I	383	413	Right-handed alpha
Helix 153	153	J	5	15	Right-handed alpha
Helix 154	154	J	31	44	Right-handed alpha
Helix 155	155	J	61	65	Right-handed 310
Helix 156	156	J	72	74	Right-handed 310
Helix 157	157	J	88	92	Right-handed 310
Helix 158	158	J	104	119	Right-handed alpha
Helix 159	159	J	140	155	Right-handed alpha
Helix 160	160	J	172	197	Right-handed alpha
Helix 161	161	J	213	223	Right-handed alpha
Helix 162	162	J	235	258	Right-handed alpha
Helix 163	163	J	266	276	Right-handed alpha
Helix 164	164	J	292	306	Right-handed alpha
Helix 165	165	J	314	318	Right-handed 310
Helix 166	166	J	336	349	Right-handed alpha
Helix 167	167	J	352	356	Right-handed 310
Helix 168	168	J	383	409	Right-handed alpha
Helix 169	169	K	5	15	Right-handed alpha
Helix 170	170	K	31	44	Right-handed alpha
Helix 171	171	K	61	66	Right-handed 310
Helix 172	172	K	72	74	Right-handed 310
Helix 173	173	K	103	120	Right-handed alpha
Helix 174	174	K	140	155	Right-handed alpha
Helix 175	175	K	172	197	Right-handed alpha
Helix 176	176	K	213	223	Right-handed alpha
Helix 177	177	K	230	234	Right-handed 310
Helix 178	178	K	235	258	Right-handed alpha
Helix 179	179	K	266	276	Right-handed alpha
Helix 180	180	K	292	306	Right-handed alpha
Helix 181	181	K	314	318	Right-handed 310
Helix 182	182	K	332	335	Right-handed 310
Helix 183	183	K	336	349	Right-handed alpha
Helix 184	184	K	383	413	Right-handed alpha
Helix 185	185	L	5	15	Right-handed alpha
Helix 186	186	L	31	44	Right-handed alpha
Helix 187	187	L	62	66	Right-handed 310
Helix 188	188	L	72	74	Right-handed 310
Helix 189	189	L	93	97	Right-handed 310
Helix 190	190	L	97	101	Right-handed 310
Helix 191	191	L	103	120	Right-handed alpha
Helix 192	192	L	140	155	Right-handed alpha
Helix 193	193	L	172	197	Right-handed alpha
Helix 194	194	L	213	223	Right-handed alpha
Helix 195	195	L	235	258	Right-handed alpha
Helix 196	196	L	266	276	Right-handed alpha
Helix 197	197	L	292	306	Right-handed alpha
Helix 198	198	L	314	318	Right-handed 310
Helix 199	199	L	331	335	Right-handed 310
Helix 200	200	L	336	349	Right-handed alpha
Helix 201	201	L	352	356	Right-handed 310
Helix 202	202	L	383	399	Right-handed alpha

There are 18 sheets in PDB entry 2XKB. Click on sheet of interest to get list of strands forming it: AA, BA, BB, BC, CA, A, EA, FA, GA, HA, IA, JA, JB, JC, KA, LA, LB, LC,

There are 9 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	76	78	first strand
Strand 2	A	55	59	parallel
Strand 3	A	25	30	parallel
Strand 4	A	130	136	parallel
Strand 5	A	162	168	parallel
Strand 6	A	205	212	parallel
Strand 7	A	280	288	parallel
Strand 8	A	370	379	anti-parallel
Strand 9	A	320	326	anti-parallel

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There are 10 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	76	78	first strand
Strand 2	B	55	59	parallel
Strand 3	B	25	30	parallel
Strand 4	B	130	136	parallel
Strand 5	B	162	168	parallel
Strand 6	B	205	212	parallel
Strand 7	B	280	288	parallel
Strand 8	B	370	379	anti-parallel
Strand 9	B	320	328	anti-parallel
Strand 10	B	364	365	anti-parallel

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There are 10 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	76	78	first strand
Strand 2	B	55	59	parallel
Strand 3	B	25	30	parallel
Strand 4	B	130	136	parallel
Strand 5	B	162	168	parallel
Strand 6	B	205	212	parallel
Strand 7	B	280	288	parallel
Strand 8	B	370	379	anti-parallel
Strand 9	B	320	328	anti-parallel
Strand 10	B	357	358	parallel

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There are 2 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	364	365	first strand
Strand 2	B	320	328	anti-parallel

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There are 9 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	76	77	first strand
Strand 2	C	55	58	parallel
Strand 3	C	25	30	parallel
Strand 4	C	130	136	parallel
Strand 5	C	162	168	parallel
Strand 6	C	205	212	parallel
Strand 7	C	280	288	parallel
Strand 8	C	370	379	anti-parallel
Strand 9	C	320	326	anti-parallel

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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	D	76	78	first strand
Strand 2	D	55	59	parallel
Strand 3	D	25	30	parallel
Strand 4	D	130	136	parallel
Strand 5	D	162	168	parallel
Strand 6	D	205	212	parallel
Strand 7	D	280	288	parallel
Strand 8	D	370	379	anti-parallel
Strand 9	D	320	326	anti-parallel

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There are 10 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	76	78	first strand
Strand 2	E	55	59	parallel
Strand 3	E	25	30	parallel
Strand 4	E	130	136	parallel
Strand 5	E	162	168	parallel
Strand 6	E	205	212	parallel
Strand 7	E	280	288	parallel
Strand 8	E	370	379	anti-parallel
Strand 9	E	320	328	anti-parallel
Strand 10	E	364	365	parallel

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There are 9 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	76	78	first strand
Strand 2	F	55	59	parallel
Strand 3	F	25	30	parallel
Strand 4	F	130	136	parallel
Strand 5	F	162	168	parallel
Strand 6	F	205	212	parallel
Strand 7	F	280	288	parallel
Strand 8	F	370	379	anti-parallel
Strand 9	F	320	326	anti-parallel

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There are 10 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	76	78	first strand
Strand 2	G	55	59	parallel
Strand 3	G	25	30	parallel
Strand 4	G	130	136	parallel
Strand 5	G	162	168	parallel
Strand 6	G	205	212	parallel
Strand 7	G	280	288	parallel
Strand 8	G	370	379	anti-parallel
Strand 9	G	320	328	anti-parallel
Strand 10	G	364	365	parallel

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There are 10 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	76	77	first strand
Strand 2	H	55	58	parallel
Strand 3	H	25	30	parallel
Strand 4	H	130	135	parallel
Strand 5	H	162	168	parallel
Strand 6	H	205	212	parallel
Strand 7	H	280	288	parallel
Strand 8	H	370	379	anti-parallel
Strand 9	H	320	328	anti-parallel
Strand 10	H	364	365	parallel

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There are 10 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	76	78	first strand
Strand 2	I	55	59	parallel
Strand 3	I	25	30	parallel
Strand 4	I	130	136	parallel
Strand 5	I	162	168	parallel
Strand 6	I	205	212	parallel
Strand 7	I	280	288	parallel
Strand 8	I	370	379	anti-parallel
Strand 9	I	320	328	anti-parallel
Strand 10	I	364	365	parallel

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There are 10 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	76	77	first strand
Strand 2	J	55	58	parallel
Strand 3	J	25	30	parallel
Strand 4	J	130	136	parallel
Strand 5	J	162	168	parallel
Strand 6	J	205	212	parallel
Strand 7	J	280	288	parallel
Strand 8	J	370	379	anti-parallel
Strand 9	J	320	328	anti-parallel
Strand 10	J	364	365	anti-parallel

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There are 10 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	76	77	first strand
Strand 2	J	55	58	parallel
Strand 3	J	25	30	parallel
Strand 4	J	130	136	parallel
Strand 5	J	162	168	parallel
Strand 6	J	205	212	parallel
Strand 7	J	280	288	parallel
Strand 8	J	370	379	anti-parallel
Strand 9	J	320	328	anti-parallel
Strand 10	J	357	358	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	364	365	first strand
Strand 2	J	320	328	anti-parallel

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There are 10 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	76	78	first strand
Strand 2	K	55	59	parallel
Strand 3	K	25	30	parallel
Strand 4	K	130	136	parallel
Strand 5	K	162	168	parallel
Strand 6	K	205	212	parallel
Strand 7	K	280	288	parallel
Strand 8	K	370	379	anti-parallel
Strand 9	K	320	328	anti-parallel
Strand 10	K	364	365	parallel

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There are 10 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	76	77	first strand
Strand 2	L	55	58	parallel
Strand 3	L	25	30	parallel
Strand 4	L	130	136	parallel
Strand 5	L	162	168	parallel
Strand 6	L	205	212	parallel
Strand 7	L	280	288	parallel
Strand 8	L	370	379	anti-parallel
Strand 9	L	320	328	anti-parallel
Strand 10	L	364	365	anti-parallel

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There are 10 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	76	77	first strand
Strand 2	L	55	58	parallel
Strand 3	L	25	30	parallel
Strand 4	L	130	136	parallel
Strand 5	L	162	168	parallel
Strand 6	L	205	212	parallel
Strand 7	L	280	288	parallel
Strand 8	L	370	379	anti-parallel
Strand 9	L	320	328	anti-parallel
Strand 10	L	357	358	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	364	365	first strand
Strand 2	L	320	328	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: 2XKB

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