Analysis of interatomic Contacts of Structural Units in PDB entry:
21AP

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 21AP entry

There are 2 chains in PDB entry 21AP (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	SER 9	LYS 557
B	SER 9	LYS 557

There are 9 helices in PDB entry 21AP. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	AA1	A	70	74	Right-handed 310
Helix 2	AA2	A	77	81	Right-handed 310
Helix 3	AA3	A	109	113	Right-handed 310
Helix 4	AA4	A	509	512	Right-handed 310
Helix 5	AA5	B	70	74	Right-handed 310
Helix 6	AA6	B	77	81	Right-handed 310
Helix 7	AA7	B	109	113	Right-handed 310
Helix 8	AA8	B	381	385	Right-handed 310
Helix 9	AA9	B	509	512	Right-handed 310

There are 24 sheets in PDB entry 21AP. Click on sheet of interest to get list of strands forming it: AA1, AA2, AA3, AA4, AA5, AA6, AA7, AA8, AA9, AB1, AB2, AB3, AB4, AB5, AB6, AB7, AB8, AB9, AC1, AC2, AC3, AC4, AC5, AC6,

There are 2 strands in AA1 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	13	16	first strand
Strand 2	A	306	309	anti-parallel

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There are 4 strands in AA2 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	25	31	first strand
Strand 2	A	37	42	anti-parallel
Strand 3	A	49	55	anti-parallel
Strand 4	A	62	68	anti-parallel

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There are 2 strands in AA3 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	46	47	first strand
Strand 2	A	348	349	anti-parallel

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There are 3 strands in AA4 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	87	88	first strand
Strand 2	A	99	107	anti-parallel
Strand 3	A	92	96	anti-parallel

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There are 4 strands in AA5 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	87	88	first strand
Strand 2	A	99	107	anti-parallel
Strand 3	A	117	123	anti-parallel
Strand 4	A	136	138	anti-parallel

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There are 2 strands in AA6 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	148	149	first strand
Strand 2	A	155	156	anti-parallel

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There are 2 strands in AA7 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	163	164	first strand
Strand 2	A	179	180	anti-parallel

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There are 4 strands in AA8 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	191	198	first strand
Strand 2	A	201	208	anti-parallel
Strand 3	A	216	222	anti-parallel
Strand 4	A	230	231	anti-parallel

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There are 4 strands in AA9 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	247	257	first strand
Strand 2	A	263	271	anti-parallel
Strand 3	A	283	291	anti-parallel
Strand 4	A	299	300	anti-parallel

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There are 4 strands in AB1 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	331	334	first strand
Strand 2	A	545	556	anti-parallel
Strand 3	A	364	367	anti-parallel
Strand 4	A	357	360	anti-parallel

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There are 6 strands in AB2 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	331	334	first strand
Strand 2	A	545	556	anti-parallel
Strand 3	A	401	409	anti-parallel
Strand 4	A	474	483	anti-parallel
Strand 5	A	486	493	anti-parallel
Strand 6	A	501	507	anti-parallel

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There are 6 strands in AB3 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	392	396	first strand
Strand 2	A	522	528	anti-parallel
Strand 3	A	418	426	anti-parallel
Strand 4	A	429	436	anti-parallel
Strand 5	A	445	452	anti-parallel
Strand 6	A	463	466	anti-parallel

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There are 2 strands in AB4 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	13	16	first strand
Strand 2	B	306	309	anti-parallel

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There are 4 strands in AB5 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	25	31	first strand
Strand 2	B	37	42	anti-parallel
Strand 3	B	49	55	anti-parallel
Strand 4	B	62	68	anti-parallel

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There are 2 strands in AB6 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	46	47	first strand
Strand 2	B	348	349	anti-parallel

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There are 3 strands in AB7 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	87	88	first strand
Strand 2	B	99	107	anti-parallel
Strand 3	B	92	96	anti-parallel

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There are 4 strands in AB8 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	87	88	first strand
Strand 2	B	99	107	anti-parallel
Strand 3	B	117	123	anti-parallel
Strand 4	B	136	138	anti-parallel

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There are 2 strands in AB9 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	148	149	first strand
Strand 2	B	155	156	anti-parallel

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There are 2 strands in AC1 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	163	164	first strand
Strand 2	B	179	180	anti-parallel

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There are 4 strands in AC2 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	191	198	first strand
Strand 2	B	201	208	anti-parallel
Strand 3	B	216	222	anti-parallel
Strand 4	B	230	231	anti-parallel

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There are 4 strands in AC3 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	247	257	first strand
Strand 2	B	263	271	anti-parallel
Strand 3	B	283	291	anti-parallel
Strand 4	B	299	300	anti-parallel

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There are 4 strands in AC4 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	331	334	first strand
Strand 2	B	545	556	anti-parallel
Strand 3	B	364	367	anti-parallel
Strand 4	B	357	360	anti-parallel

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There are 6 strands in AC5 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	331	334	first strand
Strand 2	B	545	556	anti-parallel
Strand 3	B	401	409	anti-parallel
Strand 4	B	474	483	anti-parallel
Strand 5	B	486	492	anti-parallel
Strand 6	B	501	507	anti-parallel

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There are 6 strands in AC6 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	392	396	first strand
Strand 2	B	522	528	anti-parallel
Strand 3	B	418	426	anti-parallel
Strand 4	B	429	437	anti-parallel
Strand 5	B	444	452	anti-parallel
Strand 6	B	463	466	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: 21AP

Analysis of interatomic Contacts of Structural Units in PDB entry:
21AP