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

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 1XPK entry

There are 7 chains in PDB entry 1XPK (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	THR 2	ALA 110
A	TYR 112	GLU 388
B	THR 2	ALA 110
B	TYR 112	GLU 388
C	THR 2	GLU 388
D	THR 2	ALA 110
D	TYR 112	GLU 388

There are 72 helices in PDB entry 1XPK. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	19	26	Right-handed alpha
Helix 2	2	A	29	35	Right-handed alpha
Helix 3	3	A	50	61	Right-handed alpha
Helix 4	4	A	64	70	Right-handed alpha
Helix 5	5	A	87	96	Right-handed alpha
Helix 6	6	A	113	126	Right-handed alpha
Helix 7	7	A	149	153	Right-handed 310
Helix 8	8	A	197	221	Right-handed alpha
Helix 9	9	A	223	227	Right-handed 310
Helix 10	10	A	236	249	Right-handed alpha
Helix 11	11	A	252	267	Right-handed alpha
Helix 12	12	A	269	273	Right-handed 310
Helix 13	13	A	276	278	Right-handed 310
Helix 14	14	A	279	292	Right-handed alpha
Helix 15	15	A	321	326	Right-handed 310
Helix 16	16	A	327	337	Right-handed alpha
Helix 17	17	A	342	355	Right-handed alpha
Helix 18	18	A	364	369	Right-handed 310
Helix 19	19	B	19	26	Right-handed alpha
Helix 20	20	B	29	35	Right-handed alpha
Helix 21	21	B	50	61	Right-handed alpha
Helix 22	22	B	64	70	Right-handed alpha
Helix 23	23	B	87	96	Right-handed alpha
Helix 24	24	B	113	126	Right-handed alpha
Helix 25	25	B	149	153	Right-handed 310
Helix 26	26	B	197	221	Right-handed alpha
Helix 27	27	B	223	227	Right-handed 310
Helix 28	28	B	236	249	Right-handed alpha
Helix 29	29	B	252	267	Right-handed alpha
Helix 30	30	B	269	273	Right-handed 310
Helix 31	31	B	276	278	Right-handed 310
Helix 32	32	B	279	292	Right-handed alpha
Helix 33	33	B	321	326	Right-handed 310
Helix 34	34	B	327	337	Right-handed alpha
Helix 35	35	B	342	355	Right-handed alpha
Helix 36	36	B	364	369	Right-handed 310
Helix 37	37	C	19	26	Right-handed alpha
Helix 38	38	C	29	35	Right-handed alpha
Helix 39	39	C	50	61	Right-handed alpha
Helix 40	40	C	64	70	Right-handed alpha
Helix 41	41	C	87	97	Right-handed alpha
Helix 42	42	C	113	126	Right-handed alpha
Helix 43	43	C	149	153	Right-handed 310
Helix 44	44	C	197	221	Right-handed alpha
Helix 45	45	C	223	227	Right-handed 310
Helix 46	46	C	236	249	Right-handed alpha
Helix 47	47	C	252	267	Right-handed alpha
Helix 48	48	C	269	273	Right-handed 310
Helix 49	49	C	276	278	Right-handed 310
Helix 50	50	C	279	292	Right-handed alpha
Helix 51	51	C	321	326	Right-handed 310
Helix 52	52	C	327	337	Right-handed alpha
Helix 53	53	C	342	355	Right-handed alpha
Helix 54	54	C	364	368	Right-handed 310
Helix 55	55	D	19	26	Right-handed alpha
Helix 56	56	D	29	35	Right-handed alpha
Helix 57	57	D	50	61	Right-handed alpha
Helix 58	58	D	64	70	Right-handed alpha
Helix 59	59	D	87	96	Right-handed alpha
Helix 60	60	D	113	126	Right-handed alpha
Helix 61	61	D	149	153	Right-handed 310
Helix 62	62	D	197	221	Right-handed alpha
Helix 63	63	D	223	227	Right-handed 310
Helix 64	64	D	236	249	Right-handed alpha
Helix 65	65	D	252	267	Right-handed alpha
Helix 66	66	D	269	273	Right-handed 310
Helix 67	67	D	276	278	Right-handed 310
Helix 68	68	D	279	292	Right-handed alpha
Helix 69	69	D	321	326	Right-handed 310
Helix 70	70	D	327	337	Right-handed alpha
Helix 71	71	D	342	355	Right-handed alpha
Helix 72	72	D	364	369	Right-handed 310

There are 16 sheets in PDB entry 1XPK. 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,

There are 16 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	176	179	first strand
Strand 2	A	310	318	anti-parallel
Strand 3	A	169	171	anti-parallel
Strand 4	A	3	11	anti-parallel
Strand 5	A	154	164	anti-parallel
Strand 6	A	132	141	anti-parallel
Strand 7	A	71	77	parallel
Strand 8	A	103	108	parallel
Strand 9	B	103	108	anti-parallel
Strand 10	B	71	77	parallel
Strand 11	B	132	141	parallel
Strand 12	B	154	164	anti-parallel
Strand 13	B	3	11	anti-parallel
Strand 14	B	169	171	anti-parallel
Strand 15	B	310	318	anti-parallel
Strand 16	B	176	179	anti-parallel

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There are 18 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	229	232	first strand
Strand 2	A	299	306	parallel
Strand 3	A	310	318	anti-parallel
Strand 4	A	169	171	anti-parallel
Strand 5	A	3	11	anti-parallel
Strand 6	A	154	164	anti-parallel
Strand 7	A	132	141	anti-parallel
Strand 8	A	71	77	parallel
Strand 9	A	103	108	parallel
Strand 10	B	103	108	anti-parallel
Strand 11	B	71	77	parallel
Strand 12	B	132	141	parallel
Strand 13	B	154	164	anti-parallel
Strand 14	B	3	11	anti-parallel
Strand 15	B	169	171	anti-parallel
Strand 16	B	310	318	anti-parallel
Strand 17	B	299	306	anti-parallel
Strand 18	B	229	232	parallel

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There are 3 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	41	44	first strand
Strand 2	A	15	18	anti-parallel
Strand 3	A	339	340	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	A	185	186	first strand
Strand 2	A	195	196	anti-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	A	373	378	first strand
Strand 2	A	381	385	anti-parallel

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There are 3 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	41	44	first strand
Strand 2	B	15	18	anti-parallel
Strand 3	B	339	340	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	B	185	186	first strand
Strand 2	B	195	196	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	373	378	first strand
Strand 2	B	381	385	anti-parallel

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There are 16 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	176	179	first strand
Strand 2	C	310	318	anti-parallel
Strand 3	C	169	171	anti-parallel
Strand 4	C	3	11	anti-parallel
Strand 5	C	154	164	anti-parallel
Strand 6	C	132	141	anti-parallel
Strand 7	C	71	77	parallel
Strand 8	C	103	108	parallel
Strand 9	D	103	108	anti-parallel
Strand 10	D	71	77	parallel
Strand 11	D	132	141	parallel
Strand 12	D	154	164	anti-parallel
Strand 13	D	3	11	anti-parallel
Strand 14	D	169	171	anti-parallel
Strand 15	D	310	318	anti-parallel
Strand 16	D	176	179	anti-parallel

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There are 18 strands in J sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	229	232	first strand
Strand 2	C	299	306	parallel
Strand 3	C	310	318	anti-parallel
Strand 4	C	169	171	anti-parallel
Strand 5	C	3	11	anti-parallel
Strand 6	C	154	164	anti-parallel
Strand 7	C	132	141	anti-parallel
Strand 8	C	71	77	parallel
Strand 9	C	103	108	parallel
Strand 10	D	103	108	anti-parallel
Strand 11	D	71	77	parallel
Strand 12	D	132	141	parallel
Strand 13	D	154	164	anti-parallel
Strand 14	D	3	11	anti-parallel
Strand 15	D	169	171	anti-parallel
Strand 16	D	310	318	anti-parallel
Strand 17	D	299	306	anti-parallel
Strand 18	D	229	232	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	41	44	first strand
Strand 2	C	15	18	anti-parallel
Strand 3	C	339	341	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	C	185	186	first strand
Strand 2	C	195	196	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	C	373	378	first strand
Strand 2	C	381	385	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	41	44	first strand
Strand 2	D	15	18	anti-parallel
Strand 3	D	339	340	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	D	185	186	first strand
Strand 2	D	195	196	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	D	373	378	first strand
Strand 2	D	381	385	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: 1XPK

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