Analysis of interatomic Contacts of Structural Units in PDB entry:
1EKM

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 1EKM entry

There are 3 chains in PDB entry 1EKM (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	ALA 17	VAL 672
B	ALA 17	VAL 672
C	ALA 17	VAL 672

There are 57 helices in PDB entry 1EKM. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	29	44	Right-handed alpha
Helix 2	2	A	60	70	Right-handed alpha
Helix 3	3	A	117	122	Right-handed alpha
Helix 4	4	A	123	130	Right-handed alpha
Helix 5	5	A	131	141	Right-handed alpha
Helix 6	6	A	144	149	Right-handed 310
Helix 7	7	A	184	188	Right-handed 310
Helix 8	8	A	224	232	Right-handed alpha
Helix 9	9	A	311	314	Right-handed 310
Helix 10	10	A	318	323	Right-handed alpha
Helix 11	11	A	379	382	Right-handed 310
Helix 12	12	A	489	493	Right-handed 310
Helix 13	13	A	507	512	Right-handed alpha
Helix 14	14	A	516	520	Right-handed 310
Helix 15	15	A	557	563	Right-handed alpha
Helix 16	16	A	564	568	Right-handed 310
Helix 17	17	A	596	603	Right-handed alpha
Helix 18	18	A	627	631	Right-handed 310
Helix 19	19	A	664	671	Right-handed alpha
Helix 20	20	B	29	44	Right-handed alpha
Helix 21	21	B	60	70	Right-handed alpha
Helix 22	22	B	117	122	Right-handed alpha
Helix 23	23	B	123	130	Right-handed alpha
Helix 24	24	B	131	141	Right-handed alpha
Helix 25	25	B	144	149	Right-handed 310
Helix 26	26	B	184	188	Right-handed 310
Helix 27	27	B	224	232	Right-handed alpha
Helix 28	28	B	311	314	Right-handed 310
Helix 29	29	B	318	323	Right-handed alpha
Helix 30	30	B	379	382	Right-handed 310
Helix 31	31	B	489	493	Right-handed 310
Helix 32	32	B	507	512	Right-handed alpha
Helix 33	33	B	516	520	Right-handed 310
Helix 34	34	B	557	563	Right-handed alpha
Helix 35	35	B	564	568	Right-handed 310
Helix 36	36	B	596	603	Right-handed alpha
Helix 37	37	B	627	631	Right-handed 310
Helix 38	38	B	664	671	Right-handed alpha
Helix 39	39	C	29	44	Right-handed alpha
Helix 40	40	C	60	70	Right-handed alpha
Helix 41	41	C	117	122	Right-handed alpha
Helix 42	42	C	123	130	Right-handed alpha
Helix 43	43	C	131	141	Right-handed alpha
Helix 44	44	C	144	149	Right-handed 310
Helix 45	45	C	184	188	Right-handed 310
Helix 46	46	C	224	232	Right-handed alpha
Helix 47	47	C	311	314	Right-handed 310
Helix 48	48	C	318	323	Right-handed alpha
Helix 49	49	C	379	382	Right-handed 310
Helix 50	50	C	489	493	Right-handed 310
Helix 51	51	C	507	512	Right-handed alpha
Helix 52	52	C	516	520	Right-handed 310
Helix 53	53	C	557	563	Right-handed alpha
Helix 54	54	C	564	568	Right-handed 310
Helix 55	55	C	596	603	Right-handed alpha
Helix 56	56	C	627	631	Right-handed 310
Helix 57	57	C	664	671	Right-handed alpha

There are 22 sheets in PDB entry 1EKM. 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,

There are 4 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	49	57	first strand
Strand 2	A	78	85	anti-parallel
Strand 3	A	91	97	anti-parallel
Strand 4	A	102	109	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	151	157	first strand
Strand 2	A	170	177	anti-parallel
Strand 3	A	193	197	anti-parallel
Strand 4	A	202	207	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	243	245	first strand
Strand 2	B	243	245	anti-parallel

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There are 8 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	570	574	first strand
Strand 2	A	614	624	anti-parallel
Strand 3	A	456	466	anti-parallel
Strand 4	A	288	304	anti-parallel
Strand 5	A	275	285	anti-parallel
Strand 6	A	264	271	anti-parallel
Strand 7	A	258	261	anti-parallel
Strand 8	A	253	255	anti-parallel

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There are 5 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	570	574	first strand
Strand 2	A	614	624	anti-parallel
Strand 3	A	456	466	anti-parallel
Strand 4	A	288	304	anti-parallel
Strand 5	A	316	317	anti-parallel

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There are 10 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	343	350	first strand
Strand 2	A	356	377	anti-parallel
Strand 3	A	386	402	anti-parallel
Strand 4	A	405	414	anti-parallel
Strand 5	A	419	427	anti-parallel
Strand 6	A	634	646	anti-parallel
Strand 7	A	540	544	anti-parallel
Strand 8	A	522	526	anti-parallel
Strand 9	A	474	482	anti-parallel
Strand 10	A	498	504	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	343	350	first strand
Strand 2	A	356	377	anti-parallel
Strand 3	A	386	402	anti-parallel
Strand 4	A	661	663	anti-parallel

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There are 3 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	432	433	first strand
Strand 2	A	451	454	anti-parallel
Strand 3	A	444	448	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	49	57	first strand
Strand 2	B	78	85	anti-parallel
Strand 3	B	91	97	anti-parallel
Strand 4	B	102	109	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	151	157	first strand
Strand 2	B	170	177	anti-parallel
Strand 3	B	193	197	anti-parallel
Strand 4	B	202	207	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	570	574	first strand
Strand 2	B	614	624	anti-parallel
Strand 3	B	456	466	anti-parallel
Strand 4	B	288	304	anti-parallel
Strand 5	B	275	285	anti-parallel
Strand 6	B	264	271	anti-parallel
Strand 7	B	258	261	anti-parallel
Strand 8	B	253	255	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	570	574	first strand
Strand 2	B	614	624	anti-parallel
Strand 3	B	456	466	anti-parallel
Strand 4	B	288	304	anti-parallel
Strand 5	B	316	317	anti-parallel

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There are 10 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	343	350	first strand
Strand 2	B	356	377	anti-parallel
Strand 3	B	386	402	anti-parallel
Strand 4	B	405	414	anti-parallel
Strand 5	B	419	427	anti-parallel
Strand 6	B	634	646	anti-parallel
Strand 7	B	540	544	anti-parallel
Strand 8	B	522	526	anti-parallel
Strand 9	B	474	482	anti-parallel
Strand 10	B	498	504	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	343	350	first strand
Strand 2	B	356	377	anti-parallel
Strand 3	B	386	402	anti-parallel
Strand 4	B	661	663	anti-parallel

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There are 3 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	432	433	first strand
Strand 2	B	451	454	anti-parallel
Strand 3	B	444	448	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	C	49	57	first strand
Strand 2	C	78	85	anti-parallel
Strand 3	C	91	97	anti-parallel
Strand 4	C	102	109	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	C	151	157	first strand
Strand 2	C	170	177	anti-parallel
Strand 3	C	193	197	anti-parallel
Strand 4	C	202	207	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	570	574	first strand
Strand 2	C	614	624	anti-parallel
Strand 3	C	456	466	anti-parallel
Strand 4	C	288	304	anti-parallel
Strand 5	C	275	285	anti-parallel
Strand 6	C	264	271	anti-parallel
Strand 7	C	258	261	anti-parallel
Strand 8	C	253	255	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	570	574	first strand
Strand 2	C	614	624	anti-parallel
Strand 3	C	456	466	anti-parallel
Strand 4	C	288	304	anti-parallel
Strand 5	C	316	317	anti-parallel

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There are 10 strands in T sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	343	350	first strand
Strand 2	C	356	377	anti-parallel
Strand 3	C	386	402	anti-parallel
Strand 4	C	405	414	anti-parallel
Strand 5	C	419	427	anti-parallel
Strand 6	C	634	646	anti-parallel
Strand 7	C	540	544	anti-parallel
Strand 8	C	522	526	anti-parallel
Strand 9	C	474	482	anti-parallel
Strand 10	C	498	504	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	C	343	350	first strand
Strand 2	C	356	377	anti-parallel
Strand 3	C	386	402	anti-parallel
Strand 4	C	661	663	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	432	433	first strand
Strand 2	C	451	454	anti-parallel
Strand 3	C	444	448	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: 1EKM

Analysis of interatomic Contacts of Structural Units in PDB entry:
1EKM