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

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 1PSA entry

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

Chain ID	Initial residue	Terminal residue
A	ILE 1	ALA 326
B	ILE 1	ALA 326

There are 14 helices in PDB entry 1PSA. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	H1A	A	48	51	Right-handed 310
Helix 2	H2A	A	110	114	Right-handed alpha
Helix 3	H3A	A	136	142	Right-handed alpha
Helix 4	H4A	A	225	235	Right-handed alpha
Helix 5	H5A	A	249	254	Right-handed alpha
Helix 6	H6A	A	271	274	Right-handed alpha
Helix 7	H7A	A	303	308	Right-handed alpha
Helix 8	H1B	B	48	51	Right-handed 310
Helix 9	H2B	B	110	114	Right-handed alpha
Helix 10	H3B	B	136	142	Right-handed alpha
Helix 11	H4B	B	225	235	Right-handed alpha
Helix 12	H5B	B	249	254	Right-handed alpha
Helix 13	H6B	B	271	274	Right-handed alpha
Helix 14	H7B	B	303	308	Right-handed alpha

There are 16 sheets in PDB entry 1PSA. Click on sheet of interest to get list of strands forming it: 1AA, 1BA, 2A, 3A, 4A, 5A, 6A, 7A, 1AB, 1BB, 2B, 3B, 4B, 5B, 6B, 7B,

There are 6 strands in 1AA sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	2	6	first strand
Strand 2	A	163	168	anti-parallel
Strand 3	A	149	154	anti-parallel
Strand 4	A	308	316	anti-parallel
Strand 5	A	318	325	anti-parallel
Strand 6	A	176	176	anti-parallel

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There are 6 strands in 1BA sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	2	6	first strand
Strand 2	A	163	168	anti-parallel
Strand 3	A	149	154	anti-parallel
Strand 4	A	308	316	anti-parallel
Strand 5	A	318	325	anti-parallel
Strand 6	A	179	184	anti-parallel

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There are 4 strands in 2A sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	23	27	first strand
Strand 2	A	18	21	anti-parallel
Strand 3	A	88	91	anti-parallel
Strand 4	A	94	96	anti-parallel

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There are 4 strands in 3A sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	202	205	first strand
Strand 2	A	196	199	anti-parallel
Strand 3	A	258	262	anti-parallel
Strand 4	A	265	269	anti-parallel

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There are 3 strands in 4A sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	71	75	first strand
Strand 2	A	78	82	anti-parallel
Strand 3	A	105	106	anti-parallel

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There are 4 strands in 5A sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	238	241	first strand
Strand 2	A	243	247	anti-parallel
Strand 3	A	281	285	anti-parallel
Strand 4	A	274	278	anti-parallel

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There are 7 strands in 6A sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	65	65	first strand
Strand 2	A	83	87	anti-parallel
Strand 3	A	99	104	anti-parallel
Strand 4	A	37	40	parallel
Strand 5	A	118	123	anti-parallel
Strand 6	A	28	32	parallel
Strand 7	A	16	16	anti-parallel

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There are 5 strands in 7A sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	190	195	first strand
Strand 2	A	209	215	anti-parallel
Strand 3	A	299	301	parallel
Strand 4	A	221	223	anti-parallel
Strand 5	A	285	289	parallel

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There are 6 strands in 1AB sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	2	6	first strand
Strand 2	B	163	168	anti-parallel
Strand 3	B	149	154	anti-parallel
Strand 4	B	308	316	anti-parallel
Strand 5	B	318	325	anti-parallel
Strand 6	B	176	176	anti-parallel

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There are 6 strands in 1BB sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	2	6	first strand
Strand 2	B	163	168	anti-parallel
Strand 3	B	149	154	anti-parallel
Strand 4	B	308	316	anti-parallel
Strand 5	B	318	325	anti-parallel
Strand 6	B	179	184	anti-parallel

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There are 4 strands in 2B sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	23	27	first strand
Strand 2	B	18	21	anti-parallel
Strand 3	B	88	91	anti-parallel
Strand 4	B	94	96	anti-parallel

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There are 4 strands in 3B sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	202	205	first strand
Strand 2	B	196	199	anti-parallel
Strand 3	B	258	262	anti-parallel
Strand 4	B	265	269	anti-parallel

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There are 3 strands in 4B sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	71	75	first strand
Strand 2	B	78	82	anti-parallel
Strand 3	B	105	106	anti-parallel

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There are 4 strands in 5B sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	238	241	first strand
Strand 2	B	243	247	anti-parallel
Strand 3	B	281	285	anti-parallel
Strand 4	B	274	278	anti-parallel

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There are 7 strands in 6B sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	65	65	first strand
Strand 2	B	83	87	anti-parallel
Strand 3	B	99	104	anti-parallel
Strand 4	B	37	40	parallel
Strand 5	B	118	123	anti-parallel
Strand 6	B	28	32	parallel
Strand 7	B	16	16	anti-parallel

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There are 5 strands in 7B sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	190	195	first strand
Strand 2	B	209	215	anti-parallel
Strand 3	B	299	301	parallel
Strand 4	B	221	223	anti-parallel
Strand 5	B	285	289	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: 1PSA

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