Analysis of interatomic Contacts of Structural Units in PDB entry:
4X1W

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 4X1W entry

There are 4 chains in PDB entry 4X1W (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	SER 238	LEU 569
B	SER 238	LEU 569
C	SER 238	LEU 569
D	SER 238	LEU 569

There are 24 helices in PDB entry 4X1W. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	AA1	A	238	243	Right-handed 310
Helix 2	AA2	A	244	249	Right-handed alpha
Helix 3	AA3	A	369	373	Right-handed 310
Helix 4	AA4	A	439	443	Right-handed 310
Helix 5	AA5	A	469	473	Right-handed 310
Helix 6	AA6	A	491	501	Right-handed alpha
Helix 7	AA7	B	238	243	Right-handed 310
Helix 8	AA8	B	244	249	Right-handed alpha
Helix 9	AA9	B	369	373	Right-handed 310
Helix 10	AB1	B	439	443	Right-handed 310
Helix 11	AB2	B	469	473	Right-handed 310
Helix 12	AB3	B	491	501	Right-handed alpha
Helix 13	AB4	C	238	243	Right-handed 310
Helix 14	AB5	C	244	249	Right-handed alpha
Helix 15	AB6	C	369	373	Right-handed 310
Helix 16	AB7	C	439	443	Right-handed 310
Helix 17	AB8	C	469	473	Right-handed 310
Helix 18	AB9	C	491	501	Right-handed alpha
Helix 19	AC1	D	238	243	Right-handed 310
Helix 20	AC2	D	244	249	Right-handed alpha
Helix 21	AC3	D	369	373	Right-handed 310
Helix 22	AC4	D	439	443	Right-handed 310
Helix 23	AC5	D	469	473	Right-handed 310
Helix 24	AC6	D	491	501	Right-handed alpha

There are 19 sheets in PDB entry 4X1W. 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,

There are 6 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	485	488	first strand
Strand 2	A	459	466	anti-parallel
Strand 3	A	534	536	anti-parallel
Strand 4	A	523	528	anti-parallel
Strand 5	A	511	519	anti-parallel
Strand 6	A	550	560	anti-parallel

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There are 6 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	545	546	first strand
Strand 2	A	261	266	anti-parallel
Strand 3	A	459	466	anti-parallel
Strand 4	A	534	536	anti-parallel
Strand 5	A	523	528	anti-parallel
Strand 6	A	567	568	anti-parallel

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There are 4 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	389	390	first strand
Strand 2	A	374	382	anti-parallel
Strand 3	A	353	361	anti-parallel
Strand 4	A	425	427	anti-parallel

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There are 8 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	389	390	first strand
Strand 2	A	374	382	anti-parallel
Strand 3	A	398	403	anti-parallel
Strand 4	A	315	319	anti-parallel
Strand 5	A	294	303	anti-parallel
Strand 6	A	413	421	anti-parallel
Strand 7	A	353	361	anti-parallel
Strand 8	A	425	427	anti-parallel

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There are 6 strands in AA5 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	485	488	first strand
Strand 2	B	459	466	anti-parallel
Strand 3	B	534	536	anti-parallel
Strand 4	B	523	528	anti-parallel
Strand 5	B	511	519	anti-parallel
Strand 6	B	550	560	anti-parallel

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There are 6 strands in AA6 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	545	546	first strand
Strand 2	B	261	266	anti-parallel
Strand 3	B	459	466	anti-parallel
Strand 4	B	534	536	anti-parallel
Strand 5	B	523	528	anti-parallel
Strand 6	B	567	568	anti-parallel

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There are 4 strands in AA7 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	389	390	first strand
Strand 2	B	374	382	anti-parallel
Strand 3	B	354	361	anti-parallel
Strand 4	B	425	426	anti-parallel

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There are 8 strands in AA8 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	389	390	first strand
Strand 2	B	374	382	anti-parallel
Strand 3	B	398	403	anti-parallel
Strand 4	B	315	319	anti-parallel
Strand 5	B	294	303	anti-parallel
Strand 6	B	413	421	anti-parallel
Strand 7	B	354	361	anti-parallel
Strand 8	B	425	426	anti-parallel

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There are 2 strands in AA9 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	310	312	first strand
Strand 2	B	407	409	anti-parallel

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There are 6 strands in AB1 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	485	488	first strand
Strand 2	C	459	466	anti-parallel
Strand 3	C	534	536	anti-parallel
Strand 4	C	523	528	anti-parallel
Strand 5	C	511	519	anti-parallel
Strand 6	C	550	560	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	C	545	546	first strand
Strand 2	C	261	266	anti-parallel
Strand 3	C	459	466	anti-parallel
Strand 4	C	534	536	anti-parallel
Strand 5	C	523	528	anti-parallel
Strand 6	C	567	568	anti-parallel

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There are 4 strands in AB3 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	389	390	first strand
Strand 2	C	374	382	anti-parallel
Strand 3	C	354	361	anti-parallel
Strand 4	C	425	426	anti-parallel

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There are 8 strands in AB4 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	389	390	first strand
Strand 2	C	374	382	anti-parallel
Strand 3	C	398	403	anti-parallel
Strand 4	C	315	319	anti-parallel
Strand 5	C	294	303	anti-parallel
Strand 6	C	413	421	anti-parallel
Strand 7	C	354	361	anti-parallel
Strand 8	C	425	426	anti-parallel

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There are 2 strands in AB5 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	310	312	first strand
Strand 2	C	407	409	anti-parallel

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There are 6 strands in AB6 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	485	488	first strand
Strand 2	D	459	466	anti-parallel
Strand 3	D	534	536	anti-parallel
Strand 4	D	523	528	anti-parallel
Strand 5	D	511	519	anti-parallel
Strand 6	D	550	560	anti-parallel

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There are 6 strands in AB7 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	545	546	first strand
Strand 2	D	261	266	anti-parallel
Strand 3	D	459	466	anti-parallel
Strand 4	D	534	536	anti-parallel
Strand 5	D	523	528	anti-parallel
Strand 6	D	567	568	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	D	389	390	first strand
Strand 2	D	374	382	anti-parallel
Strand 3	D	354	361	anti-parallel
Strand 4	D	425	426	anti-parallel

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There are 8 strands in AB9 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	389	390	first strand
Strand 2	D	374	382	anti-parallel
Strand 3	D	398	403	anti-parallel
Strand 4	D	315	319	anti-parallel
Strand 5	D	294	303	anti-parallel
Strand 6	D	413	421	anti-parallel
Strand 7	D	354	361	anti-parallel
Strand 8	D	425	426	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	D	310	312	first strand
Strand 2	D	407	409	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: 4X1W

Analysis of interatomic Contacts of Structural Units in PDB entry:
4X1W