Analysis of interatomic Contacts of Structural Units in PDB entry:
4ISQ

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 4ISQ entry

There are 3 chains in PDB entry 4ISQ (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	SER 863	SER 1284
B	SER 863	SER 1284
C	SER 863	ILE 1262

There are 21 helices in PDB entry 4ISQ. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	863	866	Right-handed 310
Helix 2	2	A	923	928	Right-handed 310
Helix 3	3	A	1077	1088	Right-handed alpha
Helix 4	4	A	1114	1116	Right-handed 310
Helix 5	5	A	1199	1207	Right-handed alpha
Helix 6	6	A	1273	1276	Right-handed 310
Helix 7	7	B	863	866	Right-handed 310
Helix 8	8	B	922	930	Right-handed alpha
Helix 9	9	B	1077	1088	Right-handed alpha
Helix 10	10	B	1114	1116	Right-handed 310
Helix 11	11	B	1199	1207	Right-handed alpha
Helix 12	12	B	1273	1276	Right-handed 310
Helix 13	13	C	863	866	Right-handed 310
Helix 14	14	C	924	931	Right-handed alpha
Helix 15	15	C	1077	1088	Right-handed alpha
Helix 16	16	C	1114	1116	Right-handed 310
Helix 17	17	C	1199	1207	Right-handed alpha
Helix 18	18	C	1273	1276	Right-handed 310
Helix 19	19	D	37	48	Right-handed alpha
Helix 20	20	E	37	48	Right-handed alpha
Helix 21	21	F	37	48	Right-handed alpha

There are 15 sheets in PDB entry 4ISQ. 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,

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	879	881	first strand
Strand 2	A	868	874	anti-parallel
Strand 3	A	1063	1072	anti-parallel
Strand 4	A	905	908	anti-parallel
Strand 5	A	896	897	anti-parallel

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There are 7 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	879	881	first strand
Strand 2	A	868	874	anti-parallel
Strand 3	A	1063	1072	anti-parallel
Strand 4	A	933	943	anti-parallel
Strand 5	A	1004	1011	anti-parallel
Strand 6	A	1015	1020	anti-parallel
Strand 7	A	1023	1029	anti-parallel

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There are 7 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	888	892	first strand
Strand 2	A	916	920	anti-parallel
Strand 3	A	1041	1048	anti-parallel
Strand 4	A	952	959	anti-parallel
Strand 5	A	962	969	anti-parallel
Strand 6	A	972	978	anti-parallel
Strand 7	A	984	990	anti-parallel

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There are 13 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	1163	1170	first strand
Strand 2	A	1173	1179	anti-parallel
Strand 3	A	1190	1196	anti-parallel
Strand 4	A	1255	1264	anti-parallel
Strand 5	A	1234	1245	anti-parallel
Strand 6	A	1220	1227	anti-parallel
Strand 7	A	1163	1170	first strand
Strand 8	A	1144	1150	anti-parallel
Strand 9	A	1107	1112	anti-parallel
Strand 10	A	1278	1282	anti-parallel
Strand 11	A	1220	1227	anti-parallel
Strand 12	A	1209	1215	anti-parallel
Strand 13	A	1220	1227	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	1118	1123	first strand
Strand 2	A	1126	1131	anti-parallel

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There are 5 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	879	881	first strand
Strand 2	B	868	874	anti-parallel
Strand 3	B	1063	1072	anti-parallel
Strand 4	B	905	907	anti-parallel
Strand 5	B	896	897	anti-parallel

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There are 7 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	879	881	first strand
Strand 2	B	868	874	anti-parallel
Strand 3	B	1063	1072	anti-parallel
Strand 4	B	933	943	anti-parallel
Strand 5	B	1004	1011	anti-parallel
Strand 6	B	1015	1020	anti-parallel
Strand 7	B	1023	1029	anti-parallel

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There are 7 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	888	892	first strand
Strand 2	B	916	920	anti-parallel
Strand 3	B	1041	1048	anti-parallel
Strand 4	B	952	958	anti-parallel
Strand 5	B	963	969	anti-parallel
Strand 6	B	972	980	anti-parallel
Strand 7	B	983	990	anti-parallel

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There are 13 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	1163	1169	first strand
Strand 2	B	1174	1179	anti-parallel
Strand 3	B	1190	1196	anti-parallel
Strand 4	B	1255	1264	anti-parallel
Strand 5	B	1234	1245	anti-parallel
Strand 6	B	1220	1227	anti-parallel
Strand 7	B	1163	1169	first strand
Strand 8	B	1144	1150	anti-parallel
Strand 9	B	1107	1112	anti-parallel
Strand 10	B	1278	1282	anti-parallel
Strand 11	B	1220	1227	anti-parallel
Strand 12	B	1209	1215	anti-parallel
Strand 13	B	1220	1227	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	1118	1123	first strand
Strand 2	B	1126	1131	anti-parallel

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There are 5 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	879	881	first strand
Strand 2	C	868	874	anti-parallel
Strand 3	C	1063	1072	anti-parallel
Strand 4	C	905	908	anti-parallel
Strand 5	C	896	897	anti-parallel

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There are 7 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	879	881	first strand
Strand 2	C	868	874	anti-parallel
Strand 3	C	1063	1072	anti-parallel
Strand 4	C	933	943	anti-parallel
Strand 5	C	1004	1011	anti-parallel
Strand 6	C	1015	1020	anti-parallel
Strand 7	C	1023	1029	anti-parallel

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There are 7 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	888	892	first strand
Strand 2	C	916	920	anti-parallel
Strand 3	C	1041	1048	anti-parallel
Strand 4	C	952	958	anti-parallel
Strand 5	C	963	969	anti-parallel
Strand 6	C	972	978	anti-parallel
Strand 7	C	984	990	anti-parallel

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There are 13 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	1163	1169	first strand
Strand 2	C	1174	1179	anti-parallel
Strand 3	C	1190	1196	anti-parallel
Strand 4	C	1255	1264	anti-parallel
Strand 5	C	1234	1245	anti-parallel
Strand 6	C	1220	1227	anti-parallel
Strand 7	C	1163	1169	first strand
Strand 8	C	1144	1150	anti-parallel
Strand 9	C	1107	1112	anti-parallel
Strand 10	C	1278	1282	anti-parallel
Strand 11	C	1220	1227	anti-parallel
Strand 12	C	1209	1215	anti-parallel
Strand 13	C	1220	1227	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	C	1118	1123	first strand
Strand 2	C	1126	1131	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: 4ISQ

Analysis of interatomic Contacts of Structural Units in PDB entry:
4ISQ