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

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 1XKH entry

There are 12 chains in PDB entry 1XKH (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	ALA 129	PHE 815
B	ALA 129	PHE 815
C	ALA 129	PHE 815
I	ARG 3	ARG 3
I	LYS 6	LYS 6
I	THR 8	THR 9
J	ARG 3	ARG 3
J	LYS 6	LYS 6
J	THR 8	THR 9
K	ARG 3	ARG 3
K	LYS 6	LYS 6
K	THR 8	THR 9

There are 16 helices in PDB entry 1XKH. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	173	180	Right-handed alpha
Helix 2	2	A	185	190	Right-handed alpha
Helix 3	3	A	218	222	Right-handed 310
Helix 4	4	A	252	256	Right-handed 310
Helix 5	5	A	722	726	Right-handed 310
Helix 6	6	A	746	750	Right-handed 310
Helix 7	7	B	173	180	Right-handed alpha
Helix 8	8	B	185	190	Right-handed alpha
Helix 9	9	B	252	256	Right-handed 310
Helix 10	10	B	722	726	Right-handed 310
Helix 11	11	B	746	750	Right-handed 310
Helix 12	12	C	173	180	Right-handed alpha
Helix 13	13	C	185	190	Right-handed alpha
Helix 14	14	C	252	256	Right-handed 310
Helix 15	15	C	722	726	Right-handed 310
Helix 16	16	C	746	750	Right-handed 310

There are 18 sheets in PDB entry 1XKH. 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,

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	A	170	172	first strand
Strand 2	A	243	251	anti-parallel
Strand 3	A	268	270	anti-parallel
Strand 4	A	243	251	anti-parallel
Strand 5	A	263	265	anti-parallel

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There are 3 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	195	201	first strand
Strand 2	A	204	209	anti-parallel
Strand 3	A	212	214	anti-parallel

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There are 31 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	520	524	first strand
Strand 2	A	477	490	anti-parallel
Strand 3	A	444	466	anti-parallel
Strand 4	A	411	429	anti-parallel
Strand 5	A	392	405	anti-parallel
Strand 6	A	346	356	anti-parallel
Strand 7	A	328	338	anti-parallel
Strand 8	A	307	317	anti-parallel
Strand 9	A	290	300	anti-parallel
Strand 10	A	278	282	anti-parallel
Strand 11	A	290	300	anti-parallel
Strand 12	A	285	286	anti-parallel
Strand 13	A	808	811	anti-parallel
Strand 14	A	776	781	anti-parallel
Strand 15	A	760	770	anti-parallel
Strand 16	A	728	737	anti-parallel
Strand 17	A	711	720	anti-parallel
Strand 18	A	685	698	anti-parallel
Strand 19	A	663	680	anti-parallel
Strand 20	A	629	646	anti-parallel
Strand 21	A	612	624	anti-parallel
Strand 22	A	583	592	anti-parallel
Strand 23	A	564	577	anti-parallel
Strand 24	A	544	555	anti-parallel
Strand 25	A	531	538	anti-parallel
Strand 26	A	471	474	anti-parallel
Strand 27	A	444	466	anti-parallel
Strand 28	A	477	490	anti-parallel
Strand 29	A	527	528	anti-parallel
Strand 30	A	477	490	anti-parallel
Strand 31	A	531	538	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	A	493	494	first strand
Strand 2	A	514	515	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	740	743	first strand
Strand 2	A	754	757	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	A	790	792	first strand
Strand 2	A	800	801	anti-parallel

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There are 5 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	169	172	first strand
Strand 2	B	243	251	anti-parallel
Strand 3	B	268	270	anti-parallel
Strand 4	B	243	251	anti-parallel
Strand 5	B	263	265	anti-parallel

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There are 3 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	195	201	first strand
Strand 2	B	204	209	anti-parallel
Strand 3	B	212	214	anti-parallel

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There are 31 strands in I sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	520	524	first strand
Strand 2	B	477	490	anti-parallel
Strand 3	B	444	466	anti-parallel
Strand 4	B	411	429	anti-parallel
Strand 5	B	392	405	anti-parallel
Strand 6	B	346	356	anti-parallel
Strand 7	B	328	338	anti-parallel
Strand 8	B	307	317	anti-parallel
Strand 9	B	290	300	anti-parallel
Strand 10	B	278	282	anti-parallel
Strand 11	B	290	300	anti-parallel
Strand 12	B	285	286	anti-parallel
Strand 13	B	808	811	anti-parallel
Strand 14	B	775	781	anti-parallel
Strand 15	B	760	772	anti-parallel
Strand 16	B	728	737	anti-parallel
Strand 17	B	711	720	anti-parallel
Strand 18	B	685	698	anti-parallel
Strand 19	B	663	680	anti-parallel
Strand 20	B	629	646	anti-parallel
Strand 21	B	612	624	anti-parallel
Strand 22	B	583	592	anti-parallel
Strand 23	B	564	577	anti-parallel
Strand 24	B	544	555	anti-parallel
Strand 25	B	531	538	anti-parallel
Strand 26	B	471	474	anti-parallel
Strand 27	B	444	466	anti-parallel
Strand 28	B	477	490	anti-parallel
Strand 29	B	527	528	anti-parallel
Strand 30	B	477	490	anti-parallel
Strand 31	B	531	538	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	B	493	494	first strand
Strand 2	B	514	515	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	740	743	first strand
Strand 2	B	754	757	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	B	790	792	first strand
Strand 2	B	800	801	anti-parallel

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There are 5 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	170	172	first strand
Strand 2	C	243	251	anti-parallel
Strand 3	C	268	270	anti-parallel
Strand 4	C	243	251	anti-parallel
Strand 5	C	263	265	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	C	195	201	first strand
Strand 2	C	204	209	anti-parallel
Strand 3	C	212	214	anti-parallel

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There are 31 strands in O sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	520	524	first strand
Strand 2	C	477	490	anti-parallel
Strand 3	C	444	466	anti-parallel
Strand 4	C	411	429	anti-parallel
Strand 5	C	392	405	anti-parallel
Strand 6	C	346	356	anti-parallel
Strand 7	C	328	338	anti-parallel
Strand 8	C	307	317	anti-parallel
Strand 9	C	290	300	anti-parallel
Strand 10	C	278	282	anti-parallel
Strand 11	C	290	300	anti-parallel
Strand 12	C	285	286	anti-parallel
Strand 13	C	808	811	anti-parallel
Strand 14	C	776	781	anti-parallel
Strand 15	C	760	770	anti-parallel
Strand 16	C	728	737	anti-parallel
Strand 17	C	711	720	anti-parallel
Strand 18	C	685	698	anti-parallel
Strand 19	C	663	680	anti-parallel
Strand 20	C	629	646	anti-parallel
Strand 21	C	612	624	anti-parallel
Strand 22	C	583	592	anti-parallel
Strand 23	C	564	577	anti-parallel
Strand 24	C	544	555	anti-parallel
Strand 25	C	531	538	anti-parallel
Strand 26	C	471	474	anti-parallel
Strand 27	C	444	466	anti-parallel
Strand 28	C	477	490	anti-parallel
Strand 29	C	527	528	anti-parallel
Strand 30	C	477	490	anti-parallel
Strand 31	C	531	538	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	C	493	494	first strand
Strand 2	C	514	515	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	740	743	first strand
Strand 2	C	754	757	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	C	790	792	first strand
Strand 2	C	800	801	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: 1XKH

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