Analysis of interatomic Contacts of Structural Units in PDB entry:
9IAU

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 9IAU entry

There are 4 chains in PDB entry 9IAU (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	PRO 20	LYS 136
B	THR 21	LYS 136
C	PRO 20	LYS 136
D	THR 21	LYS 136

There are 4 helices in PDB entry 9IAU. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	AA1	A	56	72	Right-handed alpha
Helix 2	AA2	B	56	72	Right-handed alpha
Helix 3	AA3	C	56	72	Right-handed alpha
Helix 4	AA4	D	56	72	Right-handed alpha

There are 12 sheets in PDB entry 9IAU. Click on sheet of interest to get list of strands forming it: AA1, AA2, AA3, AA4, AA5, AA6, AA7, AA8, AA9, AB1, AB2, AB3,

There are 4 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	38	40	first strand
Strand 2	A	24	32	anti-parallel
Strand 3	A	124	135	parallel
Strand 4	A	76	81	anti-parallel

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There are 5 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	45	48	first strand
Strand 2	A	24	32	anti-parallel
Strand 3	A	124	135	parallel
Strand 4	A	87	93	anti-parallel
Strand 5	A	98	104	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	54	55	first strand
Strand 2	A	111	112	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	B	38	40	first strand
Strand 2	B	24	32	anti-parallel
Strand 3	B	45	48	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	B	38	40	first strand
Strand 2	B	24	32	anti-parallel
Strand 3	B	124	135	parallel
Strand 4	B	76	80	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	B	54	55	first strand
Strand 2	B	111	112	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	B	86	88	first strand
Strand 2	B	103	105	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	C	38	40	first strand
Strand 2	C	24	32	anti-parallel
Strand 3	C	124	135	parallel
Strand 4	C	76	81	anti-parallel

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There are 5 strands in AA9 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	45	48	first strand
Strand 2	C	24	32	anti-parallel
Strand 3	C	124	135	parallel
Strand 4	C	87	92	anti-parallel
Strand 5	C	99	104	anti-parallel

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There are 2 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	54	55	first strand
Strand 2	C	111	112	anti-parallel

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There are 4 strands in AB2 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	38	40	first strand
Strand 2	D	24	32	anti-parallel
Strand 3	D	124	135	parallel
Strand 4	D	76	80	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	D	45	48	first strand
Strand 2	D	24	32	anti-parallel
Strand 3	D	124	135	parallel
Strand 4	D	86	88	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: 9IAU

Analysis of interatomic Contacts of Structural Units in PDB entry:
9IAU