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

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 1CEL entry

There are 2 chains in PDB entry 1CEL (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	SER 2	GLY 434
B	SER 2	GLY 434

There are 20 helices in PDB entry 1CEL. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	AA1	A	64	70	Right-handed alpha
Helix 2	AA2	A	78	82	Right-handed alpha
Helix 3	AA3	A	328	338	Right-handed alpha
Helix 4	AA4	A	342	345	Right-handed alpha
Helix 5	AA5	A	348	356	Right-handed alpha
Helix 6	AA6	A	375	378	Right-handed alpha
Helix 7	AA7	A	404	410	Right-handed alpha
Helix 8	AG1	A	36	38	Right-handed 310
Helix 9	AG2	A	165	167	Right-handed 310
Helix 10	AG3	A	241	243	Right-handed 310
Helix 11	BA1	B	64	70	Right-handed alpha
Helix 12	BA2	B	78	82	Right-handed alpha
Helix 13	BA3	B	328	338	Right-handed alpha
Helix 14	BA4	B	342	345	Right-handed alpha
Helix 15	BA5	B	348	356	Right-handed alpha
Helix 16	BA6	B	375	378	Right-handed alpha
Helix 17	BA7	B	404	410	Right-handed alpha
Helix 18	BG1	B	36	38	Right-handed 310
Helix 19	BG2	B	165	167	Right-handed 310
Helix 20	BG3	B	241	243	Right-handed 310

There are 8 sheets in PDB entry 1CEL. Click on sheet of interest to get list of strands forming it: A1A, A1B, A2A, A2B, B1A, B1B, B2A, B2B,

There are 8 strands in A1A sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	12	16	first strand
Strand 2	A	84	88	parallel
Strand 3	A	90	95	anti-parallel
Strand 4	A	414	424	anti-parallel
Strand 5	A	125	132	anti-parallel
Strand 6	A	288	295	anti-parallel
Strand 7	A	299	307	anti-parallel
Strand 8	A	309	313	anti-parallel

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There are 7 strands in A1B sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	24	26	first strand
Strand 2	A	17	20	anti-parallel
Strand 3	A	414	424	parallel
Strand 4	A	125	132	anti-parallel
Strand 5	A	288	295	anti-parallel
Strand 6	A	299	307	anti-parallel
Strand 7	A	325	327	anti-parallel

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There are 7 strands in A2A sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	27	35	first strand
Strand 2	A	107	111	anti-parallel
Strand 3	A	360	367	anti-parallel
Strand 4	A	141	148	anti-parallel
Strand 5	A	211	219	anti-parallel
Strand 6	A	222	228	anti-parallel
Strand 7	A	261	263	anti-parallel

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There are 6 strands in A2B sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	119	121	first strand
Strand 2	A	360	367	anti-parallel
Strand 3	A	141	148	anti-parallel
Strand 4	A	211	219	anti-parallel
Strand 5	A	222	228	anti-parallel
Strand 6	A	261	263	anti-parallel

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There are 8 strands in B1A sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	12	16	first strand
Strand 2	B	84	88	parallel
Strand 3	B	90	95	anti-parallel
Strand 4	B	414	424	anti-parallel
Strand 5	B	125	132	anti-parallel
Strand 6	B	288	295	anti-parallel
Strand 7	B	299	307	anti-parallel
Strand 8	B	309	313	anti-parallel

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There are 7 strands in B1B sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	24	26	first strand
Strand 2	B	17	20	anti-parallel
Strand 3	B	414	424	parallel
Strand 4	B	125	132	anti-parallel
Strand 5	B	288	295	anti-parallel
Strand 6	B	299	307	anti-parallel
Strand 7	B	325	327	anti-parallel

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There are 7 strands in B2A sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	27	35	first strand
Strand 2	B	107	111	anti-parallel
Strand 3	B	360	367	anti-parallel
Strand 4	B	141	148	anti-parallel
Strand 5	B	211	219	anti-parallel
Strand 6	B	222	228	anti-parallel
Strand 7	B	261	263	anti-parallel

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There are 6 strands in B2B sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	119	121	first strand
Strand 2	B	360	367	anti-parallel
Strand 3	B	141	148	anti-parallel
Strand 4	B	211	219	anti-parallel
Strand 5	B	222	228	anti-parallel
Strand 6	B	261	263	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: 1CEL

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