Analysis of interatomic Contacts of Structural Units in PDB entry:
2XEX

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 2XEX entry

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

Chain ID	Initial residue	Terminal residue
A	ALA 2	GLU 693
B	ALA 2	GLU 693

There are 41 helices in PDB entry 2XEX. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	18	21	Right-handed 310
Helix 2	2	A	22	35	Right-handed alpha
Helix 3	3	A	89	99	Right-handed alpha
Helix 4	4	A	113	126	Right-handed alpha
Helix 5	5	A	143	156	Right-handed alpha
Helix 6	6	A	168	172	Right-handed 310
Helix 7	7	A	200	202	Right-handed 310
Helix 8	8	A	203	220	Right-handed alpha
Helix 9	9	A	222	231	Right-handed alpha
Helix 10	10	A	236	250	Right-handed alpha
Helix 11	11	A	266	278	Right-handed alpha
Helix 12	12	A	280	284	Right-handed 310
Helix 13	13	A	416	434	Right-handed alpha
Helix 14	14	A	454	469	Right-handed alpha
Helix 15	15	A	534	536	Right-handed 310
Helix 16	16	A	537	551	Right-handed alpha
Helix 17	17	A	577	594	Right-handed alpha
Helix 18	18	A	615	626	Right-handed alpha
Helix 19	19	A	649	651	Right-handed 310
Helix 20	20	A	653	662	Right-handed alpha
Helix 21	21	A	679	691	Right-handed alpha
Helix 22	22	B	19	21	Right-handed 310
Helix 23	23	B	22	34	Right-handed alpha
Helix 24	24	B	46	51	Right-handed 310
Helix 25	25	B	89	99	Right-handed alpha
Helix 26	26	B	113	126	Right-handed alpha
Helix 27	27	B	143	156	Right-handed alpha
Helix 28	28	B	168	172	Right-handed 310
Helix 29	29	B	200	220	Right-handed alpha
Helix 30	30	B	222	231	Right-handed alpha
Helix 31	31	B	236	250	Right-handed alpha
Helix 32	32	B	266	278	Right-handed alpha
Helix 33	33	B	416	434	Right-handed alpha
Helix 34	34	B	454	468	Right-handed alpha
Helix 35	35	B	534	536	Right-handed 310
Helix 36	36	B	537	551	Right-handed alpha
Helix 37	37	B	577	594	Right-handed alpha
Helix 38	38	B	615	626	Right-handed alpha
Helix 39	39	B	649	651	Right-handed 310
Helix 40	40	B	653	662	Right-handed alpha
Helix 41	41	B	679	691	Right-handed alpha

There are 26 sheets in PDB entry 2XEX. 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, BM,

There are 7 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	67	72	first strand
Strand 2	A	75	80	anti-parallel
Strand 3	A	10	16	parallel
Strand 4	A	101	107	parallel
Strand 5	A	130	135	parallel
Strand 6	A	254	258	parallel
Strand 7	A	159	161	parallel

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There are 4 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	163	166	first strand
Strand 2	A	174	177	anti-parallel
Strand 3	A	182	185	anti-parallel
Strand 4	A	195	197	anti-parallel

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There are 3 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	294	301	first strand
Strand 2	A	287	291	anti-parallel
Strand 3	A	396	397	anti-parallel

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There are 8 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	348	352	first strand
Strand 2	A	339	343	anti-parallel
Strand 3	A	388	391	anti-parallel
Strand 4	A	310	319	anti-parallel
Strand 5	A	323	332	anti-parallel
Strand 6	A	374	378	anti-parallel
Strand 7	A	355	358	anti-parallel
Strand 8	A	363	365	anti-parallel

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There are 2 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	334	336	first strand
Strand 2	A	368	370	anti-parallel

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There are 4 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	438	440	first strand
Strand 2	A	448	452	anti-parallel
Strand 3	A	408	414	anti-parallel
Strand 4	A	473	475	anti-parallel

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There are 4 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	438	440	first strand
Strand 2	A	448	452	anti-parallel
Strand 3	A	408	414	anti-parallel
Strand 4	A	479	480	anti-parallel

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There are 2 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	473	475	first strand
Strand 2	A	408	414	anti-parallel

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There are 2 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	483	486	first strand
Strand 2	A	598	612	parallel

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There are 4 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	629	636	first strand
Strand 2	A	639	647	anti-parallel
Strand 3	A	598	612	anti-parallel
Strand 4	A	667	677	anti-parallel

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There are 4 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	629	636	first strand
Strand 2	A	639	647	anti-parallel
Strand 3	A	598	612	anti-parallel
Strand 4	A	483	486	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	667	677	first strand
Strand 2	A	598	612	anti-parallel

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There are 4 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	490	498	first strand
Strand 2	A	505	515	anti-parallel
Strand 3	A	562	570	anti-parallel
Strand 4	A	523	526	parallel

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There are 7 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	67	72	first strand
Strand 2	B	75	80	anti-parallel
Strand 3	B	10	17	parallel
Strand 4	B	101	107	parallel
Strand 5	B	130	135	parallel
Strand 6	B	254	258	parallel
Strand 7	B	159	161	parallel

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There are 4 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	163	166	first strand
Strand 2	B	174	177	anti-parallel
Strand 3	B	182	185	anti-parallel
Strand 4	B	195	197	anti-parallel

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There are 2 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	287	290	first strand
Strand 2	B	298	301	anti-parallel

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There are 8 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	348	351	first strand
Strand 2	B	340	343	anti-parallel
Strand 3	B	388	390	anti-parallel
Strand 4	B	310	319	anti-parallel
Strand 5	B	323	332	anti-parallel
Strand 6	B	374	378	anti-parallel
Strand 7	B	355	359	anti-parallel
Strand 8	B	362	365	anti-parallel

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There are 2 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	334	336	first strand
Strand 2	B	368	370	anti-parallel

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There are 4 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	438	440	first strand
Strand 2	B	448	452	anti-parallel
Strand 3	B	408	414	anti-parallel
Strand 4	B	473	475	anti-parallel

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There are 4 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	438	440	first strand
Strand 2	B	448	452	anti-parallel
Strand 3	B	408	414	anti-parallel
Strand 4	B	479	480	anti-parallel

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There are 2 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	473	475	first strand
Strand 2	B	408	414	anti-parallel

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There are 2 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	483	486	first strand
Strand 2	B	598	612	parallel

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There are 4 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	629	636	first strand
Strand 2	B	639	647	anti-parallel
Strand 3	B	598	612	anti-parallel
Strand 4	B	667	677	anti-parallel

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There are 4 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	629	636	first strand
Strand 2	B	639	647	anti-parallel
Strand 3	B	598	612	anti-parallel
Strand 4	B	483	486	parallel

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There are 2 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	667	677	first strand
Strand 2	B	598	612	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	490	498	first strand
Strand 2	B	505	515	anti-parallel
Strand 3	B	562	570	anti-parallel
Strand 4	B	523	526	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: 2XEX

Analysis of interatomic Contacts of Structural Units in PDB entry:
2XEX