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

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 1SOS entry

There are 10 chains in PDB entry 1SOS (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	ALA 1	GLN 153
F	ALA 1	GLN 153
B	ALA 1	GLN 153
G	ALA 1	GLN 153
C	ALA 1	GLN 153
H	ALA 1	GLN 153
D	ALA 1	GLN 153
I	ALA 1	GLN 153
E	ALA 1	GLN 153
J	ALA 1	GLN 153

There are 10 helices in PDB entry 1SOS. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	HA	A	133	137	Right-handed alpha
Helix 2	HF	F	133	137	Right-handed alpha
Helix 3	HB	B	133	137	Right-handed alpha
Helix 4	HG	G	133	137	Right-handed alpha
Helix 5	HC	C	133	137	Right-handed alpha
Helix 6	HH	H	133	137	Right-handed alpha
Helix 7	HD	D	133	137	Right-handed alpha
Helix 8	HI	I	133	137	Right-handed alpha
Helix 9	HE	E	133	137	Right-handed alpha
Helix 10	HJ	J	133	137	Right-handed alpha

There are 10 sheets in PDB entry 1SOS. Click on sheet of interest to get list of strands forming it: SA, SF, SB, SG, SC, SH, SD, SI, SE, SJ,

There are 9 strands in SA sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	4	9	first strand
Strand 2	A	15	21	anti-parallel
Strand 3	A	29	30	parallel
Strand 4	A	94	101	anti-parallel
Strand 5	A	85	89	parallel
Strand 6	A	41	48	anti-parallel
Strand 7	A	115	120	parallel
Strand 8	A	146	150	anti-parallel
Strand 9	A	4	9	anti-parallel

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There are 9 strands in SF sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	4	9	first strand
Strand 2	F	15	21	anti-parallel
Strand 3	F	29	30	parallel
Strand 4	F	94	101	anti-parallel
Strand 5	F	85	89	parallel
Strand 6	F	41	48	anti-parallel
Strand 7	F	115	120	parallel
Strand 8	F	146	150	anti-parallel
Strand 9	F	4	9	anti-parallel

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There are 9 strands in SB sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	4	9	first strand
Strand 2	B	15	21	anti-parallel
Strand 3	B	29	30	parallel
Strand 4	B	94	101	anti-parallel
Strand 5	B	85	89	parallel
Strand 6	B	41	48	anti-parallel
Strand 7	B	115	120	parallel
Strand 8	B	146	150	anti-parallel
Strand 9	B	4	9	anti-parallel

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There are 9 strands in SG sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	G	4	9	first strand
Strand 2	G	15	21	anti-parallel
Strand 3	G	29	30	parallel
Strand 4	G	94	101	anti-parallel
Strand 5	G	85	89	parallel
Strand 6	G	41	48	anti-parallel
Strand 7	G	115	120	parallel
Strand 8	G	146	150	anti-parallel
Strand 9	G	4	9	anti-parallel

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There are 9 strands in SC sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	4	9	first strand
Strand 2	C	15	21	anti-parallel
Strand 3	C	29	30	parallel
Strand 4	C	94	101	anti-parallel
Strand 5	C	85	89	parallel
Strand 6	C	41	48	anti-parallel
Strand 7	C	115	120	parallel
Strand 8	C	146	150	anti-parallel
Strand 9	C	4	9	anti-parallel

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There are 9 strands in SH sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	4	9	first strand
Strand 2	H	15	21	anti-parallel
Strand 3	H	29	30	parallel
Strand 4	H	94	101	anti-parallel
Strand 5	H	85	89	parallel
Strand 6	H	41	48	anti-parallel
Strand 7	H	115	120	parallel
Strand 8	H	146	150	anti-parallel
Strand 9	H	4	9	anti-parallel

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There are 9 strands in SD sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	4	9	first strand
Strand 2	D	15	21	anti-parallel
Strand 3	D	29	30	parallel
Strand 4	D	94	101	anti-parallel
Strand 5	D	85	89	parallel
Strand 6	D	41	48	anti-parallel
Strand 7	D	115	120	parallel
Strand 8	D	146	150	anti-parallel
Strand 9	D	4	9	anti-parallel

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There are 9 strands in SI sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	I	4	9	first strand
Strand 2	I	15	21	anti-parallel
Strand 3	I	29	30	parallel
Strand 4	I	94	101	anti-parallel
Strand 5	I	85	89	parallel
Strand 6	I	41	48	anti-parallel
Strand 7	I	115	120	parallel
Strand 8	I	146	150	anti-parallel
Strand 9	I	4	9	anti-parallel

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There are 9 strands in SE sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	4	9	first strand
Strand 2	E	15	21	anti-parallel
Strand 3	E	29	30	parallel
Strand 4	E	94	101	anti-parallel
Strand 5	E	85	89	parallel
Strand 6	E	41	48	anti-parallel
Strand 7	E	115	120	parallel
Strand 8	E	146	150	anti-parallel
Strand 9	E	4	9	anti-parallel

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There are 9 strands in SJ sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	J	4	9	first strand
Strand 2	J	15	21	anti-parallel
Strand 3	J	29	30	parallel
Strand 4	J	94	101	anti-parallel
Strand 5	J	85	89	parallel
Strand 6	J	41	48	anti-parallel
Strand 7	J	115	120	parallel
Strand 8	J	146	150	anti-parallel
Strand 9	J	4	9	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: 1SOS

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