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

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 4BTX entry

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

Chain ID	Initial residue	Terminal residue
A	PRO 54	ASN 470
A	ASP 472	HIS 762
B	SER 57	ASN 470
B	ASP 472	HIS 762

There are 38 helices in PDB entry 4BTX. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	64	80	Right-handed alpha
Helix 2	2	A	85	89	Right-handed 310
Helix 3	3	A	105	114	Right-handed alpha
Helix 4	4	A	155	161	Right-handed alpha
Helix 5	5	A	165	169	Right-handed 310
Helix 6	6	A	172	187	Right-handed alpha
Helix 7	7	A	188	190	Right-handed 310
Helix 8	8	A	191	199	Right-handed alpha
Helix 9	9	A	237	240	Right-handed 310
Helix 10	10	A	255	259	Right-handed 310
Helix 11	11	A	273	283	Right-handed alpha
Helix 12	12	A	376	381	Right-handed alpha
Helix 13	13	A	387	389	Right-handed 310
Helix 14	14	A	503	506	Right-handed 310
Helix 15	15	A	572	576	Right-handed 310
Helix 16	16	A	621	628	Right-handed 310
Helix 17	17	A	659	664	Right-handed 310
Helix 18	18	A	687	691	Right-handed 310
Helix 19	19	A	714	719	Right-handed 310
Helix 20	20	A	737	742	Right-handed 310
Helix 21	21	B	64	80	Right-handed alpha
Helix 22	22	B	105	115	Right-handed alpha
Helix 23	23	B	155	161	Right-handed alpha
Helix 24	24	B	167	169	Right-handed 310
Helix 25	25	B	172	187	Right-handed alpha
Helix 26	26	B	188	192	Right-handed 310
Helix 27	27	B	193	200	Right-handed alpha
Helix 28	28	B	237	240	Right-handed 310
Helix 29	29	B	255	259	Right-handed 310
Helix 30	30	B	273	283	Right-handed alpha
Helix 31	31	B	376	381	Right-handed alpha
Helix 32	32	B	387	389	Right-handed 310
Helix 33	33	B	572	574	Right-handed 310
Helix 34	34	B	621	628	Right-handed 310
Helix 35	35	B	659	663	Right-handed 310
Helix 36	36	B	687	691	Right-handed 310
Helix 37	37	B	714	719	Right-handed 310
Helix 38	38	B	737	741	Right-handed 310

There are 25 sheets in PDB entry 4BTX. Click on sheet of interest to get list of strands forming it: AA, AB, AC, AD, AE, AF, AG, AH, AI, AJ, AK, AL, AM, BA, BB, BC, BD, BE, BF, BG, BH, BI, BJ, BK, BL,

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	83	84	first strand
Strand 2	A	94	102	anti-parallel

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There are 14 strands in AB sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	151	154	first strand
Strand 2	A	137	144	anti-parallel
Strand 3	A	123	130	anti-parallel
Strand 4	A	94	102	anti-parallel
Strand 5	A	409	417	anti-parallel
Strand 6	A	423	445	anti-parallel
Strand 7	A	451	468	anti-parallel
Strand 8	A	471	479	anti-parallel
Strand 9	A	485	493	anti-parallel
Strand 10	A	701	708	anti-parallel
Strand 11	A	600	608	anti-parallel
Strand 12	A	586	594	anti-parallel
Strand 13	A	536	550	anti-parallel
Strand 14	A	558	569	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	151	154	first strand
Strand 2	A	137	144	anti-parallel
Strand 3	A	123	130	anti-parallel
Strand 4	A	94	102	anti-parallel
Strand 5	A	83	84	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	323	326	first strand
Strand 2	A	329	332	anti-parallel
Strand 3	A	335	342	anti-parallel
Strand 4	A	346	354	anti-parallel
Strand 5	A	357	372	parallel
Strand 6	A	383	385	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	151	154	first strand
Strand 2	A	137	144	anti-parallel
Strand 3	A	123	130	anti-parallel
Strand 4	A	94	102	anti-parallel
Strand 5	A	409	417	anti-parallel
Strand 6	A	423	445	anti-parallel
Strand 7	A	451	468	anti-parallel
Strand 8	A	723	726	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	383	385	first strand
Strand 2	A	357	372	parallel

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There are 16 strands in AG sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	151	154	first strand
Strand 2	A	137	144	anti-parallel
Strand 3	A	123	130	anti-parallel
Strand 4	A	94	102	anti-parallel
Strand 5	A	409	417	anti-parallel
Strand 6	A	423	445	anti-parallel
Strand 7	A	451	468	anti-parallel
Strand 8	A	471	479	anti-parallel
Strand 9	A	485	493	anti-parallel
Strand 10	A	701	708	anti-parallel
Strand 11	A	600	608	anti-parallel
Strand 12	A	586	594	anti-parallel
Strand 13	A	536	550	anti-parallel
Strand 14	A	672	684	anti-parallel
Strand 15	A	630	636	parallel
Strand 16	A	577	578	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	323	326	first strand
Strand 2	A	329	332	anti-parallel
Strand 3	A	335	342	anti-parallel
Strand 4	A	346	354	anti-parallel
Strand 5	A	357	372	parallel
Strand 6	A	520	530	parallel
Strand 7	A	672	684	parallel
Strand 8	A	630	636	parallel
Strand 9	A	577	578	parallel

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There are 17 strands in AI sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	151	154	first strand
Strand 2	A	137	144	anti-parallel
Strand 3	A	123	130	anti-parallel
Strand 4	A	94	102	anti-parallel
Strand 5	A	409	417	anti-parallel
Strand 6	A	423	445	anti-parallel
Strand 7	A	451	468	anti-parallel
Strand 8	A	471	479	anti-parallel
Strand 9	A	485	493	anti-parallel
Strand 10	A	701	708	anti-parallel
Strand 11	A	600	608	anti-parallel
Strand 12	A	586	594	anti-parallel
Strand 13	A	536	550	anti-parallel
Strand 14	A	672	684	anti-parallel
Strand 15	A	520	530	parallel
Strand 16	A	357	372	parallel
Strand 17	A	383	385	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	323	326	first strand
Strand 2	A	329	332	anti-parallel
Strand 3	A	335	342	anti-parallel
Strand 4	A	346	354	anti-parallel
Strand 5	A	357	372	parallel
Strand 6	A	520	530	parallel
Strand 7	A	672	684	parallel
Strand 8	A	536	550	anti-parallel
Strand 9	A	558	569	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	208	211	first strand
Strand 2	A	224	231	anti-parallel
Strand 3	A	242	250	anti-parallel
Strand 4	A	261	266	anti-parallel
Strand 5	A	269	271	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	314	316	first strand
Strand 2	B	314	316	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	497	499	first strand
Strand 2	A	515	518	anti-parallel
Strand 3	A	508	512	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	151	154	first strand
Strand 2	B	137	144	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	164	165	first strand
Strand 2	B	137	144	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	323	326	first strand
Strand 2	B	329	332	anti-parallel
Strand 3	B	335	342	anti-parallel
Strand 4	B	346	354	anti-parallel
Strand 5	B	357	372	parallel
Strand 6	B	383	385	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	323	326	first strand
Strand 2	B	329	332	anti-parallel
Strand 3	B	335	342	anti-parallel
Strand 4	B	346	354	anti-parallel
Strand 5	B	357	372	parallel
Strand 6	B	520	530	parallel
Strand 7	B	672	684	parallel
Strand 8	B	630	636	parallel
Strand 9	B	576	578	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	323	326	first strand
Strand 2	B	329	332	anti-parallel
Strand 3	B	335	342	anti-parallel
Strand 4	B	346	354	anti-parallel
Strand 5	B	357	372	parallel
Strand 6	B	520	530	parallel
Strand 7	B	672	684	parallel
Strand 8	B	536	548	anti-parallel
Strand 9	B	560	568	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	383	385	first strand
Strand 2	B	357	372	parallel

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There are 15 strands in BG sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	323	326	first strand
Strand 2	B	329	332	anti-parallel
Strand 3	B	335	342	anti-parallel
Strand 4	B	346	354	anti-parallel
Strand 5	B	357	372	parallel
Strand 6	B	520	530	parallel
Strand 7	B	672	684	parallel
Strand 8	B	536	548	anti-parallel
Strand 9	B	586	594	anti-parallel
Strand 10	B	600	608	anti-parallel
Strand 11	B	701	708	anti-parallel
Strand 12	B	485	493	anti-parallel
Strand 13	B	471	479	anti-parallel
Strand 14	B	451	468	anti-parallel
Strand 15	B	723	726	anti-parallel

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There are 20 strands in BH sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	323	326	first strand
Strand 2	B	329	332	anti-parallel
Strand 3	B	335	342	anti-parallel
Strand 4	B	346	354	anti-parallel
Strand 5	B	357	372	parallel
Strand 6	B	520	530	parallel
Strand 7	B	672	684	parallel
Strand 8	B	536	548	anti-parallel
Strand 9	B	586	594	anti-parallel
Strand 10	B	600	608	anti-parallel
Strand 11	B	701	708	anti-parallel
Strand 12	B	485	493	anti-parallel
Strand 13	B	471	479	anti-parallel
Strand 14	B	451	468	anti-parallel
Strand 15	B	423	445	anti-parallel
Strand 16	B	409	417	anti-parallel
Strand 17	B	94	102	anti-parallel
Strand 18	B	123	130	anti-parallel
Strand 19	B	137	144	anti-parallel
Strand 20	B	151	154	parallel

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There are 20 strands in BI sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	323	326	first strand
Strand 2	B	329	332	anti-parallel
Strand 3	B	335	342	anti-parallel
Strand 4	B	346	354	anti-parallel
Strand 5	B	357	372	parallel
Strand 6	B	520	530	parallel
Strand 7	B	672	684	parallel
Strand 8	B	536	548	anti-parallel
Strand 9	B	586	594	anti-parallel
Strand 10	B	600	608	anti-parallel
Strand 11	B	701	708	anti-parallel
Strand 12	B	485	493	anti-parallel
Strand 13	B	471	479	anti-parallel
Strand 14	B	451	468	anti-parallel
Strand 15	B	423	445	anti-parallel
Strand 16	B	409	417	anti-parallel
Strand 17	B	94	102	anti-parallel
Strand 18	B	123	130	anti-parallel
Strand 19	B	137	144	anti-parallel
Strand 20	B	164	165	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	723	726	first strand
Strand 2	B	451	468	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	208	211	first strand
Strand 2	B	224	231	anti-parallel
Strand 3	B	242	250	anti-parallel
Strand 4	B	260	266	anti-parallel
Strand 5	B	269	271	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	497	499	first strand
Strand 2	B	515	518	anti-parallel
Strand 3	B	508	512	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: 4BTX

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