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

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 2EXI entry

There are 4 chains in PDB entry 2EXI (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	LYS 3	LEU 535
B	LYS 3	LEU 535
C	LYS 3	LEU 535
D	LYS 3	LEU 535

There are 4 helices in PDB entry 2EXI. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	493	500	Right-handed 310
Helix 2	2	B	493	500	Right-handed 310
Helix 3	3	C	493	496	Right-handed 310
Helix 4	4	D	493	500	Right-handed 310

There are 49 sheets in PDB entry 2EXI. Click on sheet of interest to get list of strands forming it: A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z, AA, AB, AC, AD, AE, AF, AG, AH, AI, AJ, AK, AL, AM, AN, AO, AP, AQ, AR, AS, AT, AU, AV, AW,

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	4	5	first strand
Strand 2	A	313	314	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	17	21	first strand
Strand 2	A	24	29	anti-parallel
Strand 3	A	39	43	anti-parallel
Strand 4	A	50	53	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	34	35	first strand
Strand 2	A	345	346	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	77	81	first strand
Strand 2	A	84	92	anti-parallel
Strand 3	A	102	109	anti-parallel
Strand 4	A	120	121	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	130	133	first strand
Strand 2	A	139	146	anti-parallel
Strand 3	A	155	164	anti-parallel
Strand 4	A	169	178	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	187	194	first strand
Strand 2	A	197	204	anti-parallel
Strand 3	A	212	218	anti-parallel
Strand 4	A	226	227	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	187	194	first strand
Strand 2	A	197	204	anti-parallel
Strand 3	A	212	218	anti-parallel
Strand 4	A	234	235	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	245	254	first strand
Strand 2	A	260	267	anti-parallel
Strand 3	A	288	298	anti-parallel
Strand 4	A	301	304	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	331	332	first strand
Strand 2	A	524	534	anti-parallel
Strand 3	A	389	397	anti-parallel
Strand 4	A	461	468	anti-parallel
Strand 5	A	471	477	anti-parallel
Strand 6	A	484	485	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	355	356	first strand
Strand 2	A	364	367	anti-parallel
Strand 3	A	524	534	anti-parallel
Strand 4	A	389	397	anti-parallel
Strand 5	A	461	468	anti-parallel
Strand 6	A	471	477	anti-parallel
Strand 7	A	490	491	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	379	384	first strand
Strand 2	A	510	517	anti-parallel
Strand 3	A	405	414	anti-parallel
Strand 4	A	417	426	anti-parallel
Strand 5	A	430	439	anti-parallel
Strand 6	A	442	444	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	379	384	first strand
Strand 2	A	510	517	anti-parallel
Strand 3	A	405	414	anti-parallel
Strand 4	A	417	426	anti-parallel
Strand 5	A	430	439	anti-parallel
Strand 6	A	452	453	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	4	5	first strand
Strand 2	B	313	314	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	17	21	first strand
Strand 2	B	24	29	anti-parallel
Strand 3	B	39	43	anti-parallel
Strand 4	B	50	53	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	34	35	first strand
Strand 2	B	345	346	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	77	81	first strand
Strand 2	B	84	92	anti-parallel
Strand 3	B	102	109	anti-parallel
Strand 4	B	120	123	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	130	133	first strand
Strand 2	B	139	146	anti-parallel
Strand 3	B	155	164	anti-parallel
Strand 4	B	169	170	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	130	133	first strand
Strand 2	B	139	146	anti-parallel
Strand 3	B	155	164	anti-parallel
Strand 4	B	175	178	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	187	194	first strand
Strand 2	B	197	204	anti-parallel
Strand 3	B	212	218	anti-parallel
Strand 4	B	226	227	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	187	194	first strand
Strand 2	B	197	204	anti-parallel
Strand 3	B	212	218	anti-parallel
Strand 4	B	234	235	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	245	254	first strand
Strand 2	B	260	267	anti-parallel
Strand 3	B	288	298	anti-parallel
Strand 4	B	301	304	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	331	332	first strand
Strand 2	B	524	534	anti-parallel
Strand 3	B	364	367	anti-parallel
Strand 4	B	355	356	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	331	332	first strand
Strand 2	B	524	534	anti-parallel
Strand 3	B	389	397	anti-parallel
Strand 4	B	461	468	anti-parallel
Strand 5	B	471	477	anti-parallel
Strand 6	B	484	491	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	379	384	first strand
Strand 2	B	510	517	anti-parallel
Strand 3	B	405	414	anti-parallel
Strand 4	B	417	426	anti-parallel
Strand 5	B	430	439	anti-parallel
Strand 6	B	442	444	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	379	384	first strand
Strand 2	B	510	517	anti-parallel
Strand 3	B	405	414	anti-parallel
Strand 4	B	417	426	anti-parallel
Strand 5	B	430	439	anti-parallel
Strand 6	B	452	453	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	4	5	first strand
Strand 2	C	313	314	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	17	21	first strand
Strand 2	C	24	29	anti-parallel
Strand 3	C	39	43	anti-parallel
Strand 4	C	50	53	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	34	35	first strand
Strand 2	C	345	346	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	77	81	first strand
Strand 2	C	84	92	anti-parallel
Strand 3	C	102	109	anti-parallel
Strand 4	C	120	123	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	130	133	first strand
Strand 2	C	139	146	anti-parallel
Strand 3	C	155	164	anti-parallel
Strand 4	C	169	178	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	187	194	first strand
Strand 2	C	197	204	anti-parallel
Strand 3	C	212	218	anti-parallel
Strand 4	C	226	227	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	C	187	194	first strand
Strand 2	C	197	204	anti-parallel
Strand 3	C	212	218	anti-parallel
Strand 4	C	234	235	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	C	245	254	first strand
Strand 2	C	260	267	anti-parallel
Strand 3	C	288	298	anti-parallel
Strand 4	C	301	304	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	331	332	first strand
Strand 2	C	524	534	anti-parallel
Strand 3	C	364	367	anti-parallel
Strand 4	C	355	356	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	331	332	first strand
Strand 2	C	524	534	anti-parallel
Strand 3	C	389	397	anti-parallel
Strand 4	C	461	468	anti-parallel
Strand 5	C	471	477	anti-parallel
Strand 6	C	483	491	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	379	384	first strand
Strand 2	C	510	517	anti-parallel
Strand 3	C	405	414	anti-parallel
Strand 4	C	417	426	anti-parallel
Strand 5	C	430	439	anti-parallel
Strand 6	C	442	444	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	379	384	first strand
Strand 2	C	510	517	anti-parallel
Strand 3	C	405	414	anti-parallel
Strand 4	C	417	426	anti-parallel
Strand 5	C	430	439	anti-parallel
Strand 6	C	452	453	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	D	4	5	first strand
Strand 2	D	313	314	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	D	17	21	first strand
Strand 2	D	24	29	anti-parallel
Strand 3	D	39	43	anti-parallel
Strand 4	D	50	53	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	34	35	first strand
Strand 2	D	345	346	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	77	81	first strand
Strand 2	D	84	92	anti-parallel
Strand 3	D	102	109	anti-parallel
Strand 4	D	120	123	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	130	133	first strand
Strand 2	D	139	146	anti-parallel
Strand 3	D	155	164	anti-parallel
Strand 4	D	169	178	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	187	194	first strand
Strand 2	D	197	204	anti-parallel
Strand 3	D	212	218	anti-parallel
Strand 4	D	226	227	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	187	194	first strand
Strand 2	D	197	204	anti-parallel
Strand 3	D	212	218	anti-parallel
Strand 4	D	234	235	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	245	254	first strand
Strand 2	D	260	267	anti-parallel
Strand 3	D	288	298	anti-parallel
Strand 4	D	301	304	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	331	332	first strand
Strand 2	D	524	534	anti-parallel
Strand 3	D	389	397	anti-parallel
Strand 4	D	461	468	anti-parallel
Strand 5	D	471	477	anti-parallel
Strand 6	D	484	485	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	355	356	first strand
Strand 2	D	364	367	anti-parallel
Strand 3	D	524	534	anti-parallel
Strand 4	D	389	397	anti-parallel
Strand 5	D	461	468	anti-parallel
Strand 6	D	471	477	anti-parallel
Strand 7	D	490	491	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	379	384	first strand
Strand 2	D	510	517	anti-parallel
Strand 3	D	405	414	anti-parallel
Strand 4	D	417	426	anti-parallel
Strand 5	D	430	439	anti-parallel
Strand 6	D	442	444	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	379	384	first strand
Strand 2	D	510	517	anti-parallel
Strand 3	D	405	414	anti-parallel
Strand 4	D	417	426	anti-parallel
Strand 5	D	430	439	anti-parallel
Strand 6	D	452	453	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: 2EXI

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