Analysis of interatomic Contacts of Structural Units in PDB entry:
3ECA

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 3ECA entry

There are 4 chains in PDB entry 3ECA (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	LEU 1	TYR 326
B	LEU 1	TYR 326
C	LEU 1	TYR 326
D	LEU 1	TYR 326

There are 59 helices in PDB entry 3ECA. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	AA1	A	12	15	Right-handed 310
Helix 2	AA2	A	31	39	Right-handed alpha
Helix 3	AA3	A	40	45	Right-handed 310
Helix 4	AA4	A	57	61	Right-handed 310
Helix 5	AA5	A	62	77	Right-handed alpha
Helix 6	AA6	A	78	80	Right-handed 310
Helix 7	AA7	A	91	103	Right-handed alpha
Helix 8	AA8	A	124	137	Right-handed alpha
Helix 9	AA9	A	138	142	Right-handed 310
Helix 10	AB1	A	197	201	Right-handed 310
Helix 11	AB2	A	225	234	Right-handed alpha
Helix 12	AB3	A	250	263	Right-handed alpha
Helix 13	AB4	A	285	290	Right-handed alpha
Helix 14	AB5	A	298	310	Right-handed alpha
Helix 15	AB6	A	315	324	Right-handed alpha
Helix 16	AB7	B	12	15	Right-handed 310
Helix 17	AB8	B	31	38	Right-handed alpha
Helix 18	AB9	B	39	45	Right-handed 310
Helix 19	AC1	B	57	61	Right-handed 310
Helix 20	AC2	B	62	77	Right-handed alpha
Helix 21	AC3	B	78	80	Right-handed 310
Helix 22	AC4	B	91	103	Right-handed alpha
Helix 23	AC5	B	124	137	Right-handed alpha
Helix 24	AC6	B	138	142	Right-handed 310
Helix 25	AC7	B	197	201	Right-handed 310
Helix 26	AC8	B	225	234	Right-handed alpha
Helix 27	AC9	B	250	263	Right-handed alpha
Helix 28	AD1	B	285	290	Right-handed alpha
Helix 29	AD2	B	298	310	Right-handed alpha
Helix 30	AD3	B	315	326	Right-handed alpha
Helix 31	AD4	C	31	35	Right-handed 310
Helix 32	AD5	C	39	45	Right-handed 310
Helix 33	AD6	C	57	61	Right-handed 310
Helix 34	AD7	C	62	77	Right-handed alpha
Helix 35	AD8	C	78	80	Right-handed 310
Helix 36	AD9	C	91	103	Right-handed alpha
Helix 37	AE1	C	124	138	Right-handed alpha
Helix 38	AE2	C	139	142	Right-handed 310
Helix 39	AE3	C	197	201	Right-handed 310
Helix 40	AE4	C	225	234	Right-handed alpha
Helix 41	AE5	C	250	263	Right-handed alpha
Helix 42	AE6	C	285	290	Right-handed alpha
Helix 43	AE7	C	298	310	Right-handed alpha
Helix 44	AE8	C	315	324	Right-handed alpha
Helix 45	AE9	D	12	15	Right-handed 310
Helix 46	AF1	D	31	38	Right-handed alpha
Helix 47	AF2	D	39	45	Right-handed 310
Helix 48	AF3	D	57	61	Right-handed 310
Helix 49	AF4	D	62	77	Right-handed alpha
Helix 50	AF5	D	78	80	Right-handed 310
Helix 51	AF6	D	91	103	Right-handed alpha
Helix 52	AF7	D	124	138	Right-handed alpha
Helix 53	AF8	D	139	142	Right-handed 310
Helix 54	AF9	D	197	201	Right-handed 310
Helix 55	AG1	D	225	234	Right-handed alpha
Helix 56	AG2	D	250	263	Right-handed alpha
Helix 57	AG3	D	285	290	Right-handed alpha
Helix 58	AG4	D	298	310	Right-handed alpha
Helix 59	AG5	D	315	326	Right-handed alpha

There are 15 sheets in PDB entry 3ECA. 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, AB6,

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	47	56	first strand
Strand 2	A	3	10	parallel
Strand 3	A	82	86	parallel
Strand 4	A	109	112	parallel
Strand 5	A	147	150	parallel
Strand 6	A	153	156	anti-parallel
Strand 7	A	180	183	anti-parallel
Strand 8	A	186	189	anti-parallel

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There are 2 strands in AA2 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	160	162	first strand
Strand 2	A	171	173	anti-parallel

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There are 4 strands in AA3 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	214	218	first strand
Strand 2	A	238	243	parallel
Strand 3	A	266	271	parallel
Strand 4	A	291	293	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	B	47	56	first strand
Strand 2	B	3	10	parallel
Strand 3	B	82	86	parallel
Strand 4	B	109	112	parallel
Strand 5	B	147	150	parallel
Strand 6	B	153	156	anti-parallel
Strand 7	B	180	183	anti-parallel
Strand 8	B	186	189	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	16	17	first strand
Strand 2	B	25	26	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	160	162	first strand
Strand 2	B	171	173	anti-parallel

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There are 4 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	214	218	first strand
Strand 2	B	238	243	parallel
Strand 3	B	266	271	parallel
Strand 4	B	292	293	parallel

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There are 8 strands in AA8 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	47	56	first strand
Strand 2	C	3	10	parallel
Strand 3	C	82	86	parallel
Strand 4	C	109	112	parallel
Strand 5	C	147	150	parallel
Strand 6	C	153	156	anti-parallel
Strand 7	C	180	183	anti-parallel
Strand 8	C	186	189	anti-parallel

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There are 2 strands in AA9 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	16	17	first strand
Strand 2	C	25	26	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	C	160	162	first strand
Strand 2	C	171	173	anti-parallel

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There are 4 strands in AB2 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	214	218	first strand
Strand 2	C	238	243	parallel
Strand 3	C	266	271	parallel
Strand 4	C	291	293	parallel

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There are 8 strands in AB3 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	47	56	first strand
Strand 2	D	3	10	parallel
Strand 3	D	82	86	parallel
Strand 4	D	109	112	parallel
Strand 5	D	147	150	parallel
Strand 6	D	153	156	anti-parallel
Strand 7	D	180	183	anti-parallel
Strand 8	D	186	189	anti-parallel

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There are 2 strands in AB4 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	16	17	first strand
Strand 2	D	25	26	anti-parallel

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There are 2 strands in AB5 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	160	162	first strand
Strand 2	D	171	173	anti-parallel

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There are 4 strands in AB6 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	214	218	first strand
Strand 2	D	238	243	parallel
Strand 3	D	266	271	parallel
Strand 4	D	291	293	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: 3ECA

Analysis of interatomic Contacts of Structural Units in PDB entry:
3ECA