Analysis of interatomic Contacts of Structural Units in PDB entry:
23NX

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 23NX entry

There are 6 chains in PDB entry 23NX (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	ALA 2	ASP 110
C	ALA 6	ASP 110
D	ALA 6	ASP 110
E	GLN 4	ASP 110
B	GLU 469	VAL 908
F	GLU 469	VAL 908

There are 40 helices in PDB entry 23NX. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	AA1	A	61	66	Right-handed alpha
Helix 2	AA2	C	61	65	Right-handed 310
Helix 3	AA3	D	61	66	Right-handed alpha
Helix 4	AA4	E	62	66	Right-handed 310
Helix 5	AA5	B	470	481	Right-handed alpha
Helix 6	AA6	B	485	489	Right-handed 310
Helix 7	AA7	B	510	521	Right-handed alpha
Helix 8	AA8	B	556	562	Right-handed alpha
Helix 9	AA9	B	566	574	Right-handed alpha
Helix 10	AB1	B	596	605	Right-handed alpha
Helix 11	AB2	B	640	650	Right-handed alpha
Helix 12	AB3	B	662	673	Right-handed alpha
Helix 13	AB4	B	682	686	Right-handed 310
Helix 14	AB5	B	687	695	Right-handed alpha
Helix 15	AB6	B	723	738	Right-handed alpha
Helix 16	AB7	B	758	770	Right-handed alpha
Helix 17	AB8	B	779	781	Right-handed 310
Helix 18	AB9	B	810	815	Right-handed 310
Helix 19	AC1	B	856	865	Right-handed alpha
Helix 20	AC2	B	877	888	Right-handed alpha
Helix 21	AC3	B	890	899	Right-handed alpha
Helix 22	AC4	B	900	904	Right-handed 310
Helix 23	AC5	F	470	481	Right-handed alpha
Helix 24	AC6	F	485	489	Right-handed 310
Helix 25	AC7	F	510	521	Right-handed alpha
Helix 26	AC8	F	556	562	Right-handed alpha
Helix 27	AC9	F	566	574	Right-handed alpha
Helix 28	AD1	F	596	605	Right-handed alpha
Helix 29	AD2	F	640	650	Right-handed alpha
Helix 30	AD3	F	662	673	Right-handed alpha
Helix 31	AD4	F	682	686	Right-handed 310
Helix 32	AD5	F	687	695	Right-handed alpha
Helix 33	AD6	F	722	738	Right-handed alpha
Helix 34	AD7	F	758	770	Right-handed alpha
Helix 35	AD8	F	779	781	Right-handed 310
Helix 36	AD9	F	810	815	Right-handed 310
Helix 37	AE1	F	856	865	Right-handed alpha
Helix 38	AE2	F	877	888	Right-handed alpha
Helix 39	AE3	F	890	899	Right-handed alpha
Helix 40	AE4	F	900	904	Right-handed 310

There are 14 sheets in PDB entry 23NX. 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,

There are 8 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	18	22	first strand
Strand 2	A	25	28	anti-parallel
Strand 3	A	33	40	anti-parallel
Strand 4	A	45	51	anti-parallel
Strand 5	A	101	108	anti-parallel
Strand 6	A	89	98	anti-parallel
Strand 7	A	81	84	anti-parallel
Strand 8	A	74	77	anti-parallel

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There are 8 strands in AA2 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	19	22	first strand
Strand 2	C	25	27	anti-parallel
Strand 3	C	33	41	anti-parallel
Strand 4	C	44	51	anti-parallel
Strand 5	C	101	109	anti-parallel
Strand 6	C	89	98	anti-parallel
Strand 7	C	81	84	anti-parallel
Strand 8	C	74	77	anti-parallel

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There are 8 strands in AA3 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	19	22	first strand
Strand 2	D	25	27	anti-parallel
Strand 3	D	33	41	anti-parallel
Strand 4	D	44	51	anti-parallel
Strand 5	D	101	109	anti-parallel
Strand 6	D	89	98	anti-parallel
Strand 7	D	81	83	anti-parallel
Strand 8	D	76	77	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	E	18	22	first strand
Strand 2	E	25	28	anti-parallel
Strand 3	E	33	40	anti-parallel
Strand 4	E	45	50	anti-parallel
Strand 5	E	101	109	anti-parallel
Strand 6	E	89	98	anti-parallel
Strand 7	E	81	84	anti-parallel
Strand 8	E	74	77	anti-parallel

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There are 2 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	500	501	first strand
Strand 2	B	508	509	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	542	544	first strand
Strand 2	B	553	555	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	587	588	first strand
Strand 2	B	591	592	anti-parallel

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There are 7 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	678	679	first strand
Strand 2	B	653	658	parallel
Strand 3	B	630	634	parallel
Strand 4	B	700	701	parallel
Strand 5	B	749	754	parallel
Strand 6	B	787	792	anti-parallel
Strand 7	B	774	777	anti-parallel

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There are 3 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	820	821	first strand
Strand 2	B	846	848	anti-parallel
Strand 3	B	851	853	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	F	500	501	first strand
Strand 2	F	508	509	anti-parallel

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There are 2 strands in AB2 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	542	544	first strand
Strand 2	F	553	555	anti-parallel

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There are 2 strands in AB3 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	587	588	first strand
Strand 2	F	591	592	anti-parallel

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There are 7 strands in AB4 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	678	679	first strand
Strand 2	F	653	659	parallel
Strand 3	F	630	635	parallel
Strand 4	F	700	701	parallel
Strand 5	F	749	754	parallel
Strand 6	F	787	792	anti-parallel
Strand 7	F	774	777	anti-parallel

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There are 3 strands in AB5 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	820	821	first strand
Strand 2	F	846	848	anti-parallel
Strand 3	F	851	853	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: 23NX

Analysis of interatomic Contacts of Structural Units in PDB entry:
23NX