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

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 2CEX entry

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

Chain ID	Initial residue	Terminal residue
A	ASP 2	ASN 305
B	ASP 2	PRO 306
C	ASP 2	ASN 305
D	ALA 1	ASN 305

There are 62 helices in PDB entry 2CEX. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	15	32	Right-handed alpha
Helix 2	2	A	48	58	Right-handed alpha
Helix 3	3	A	68	74	Right-handed 310
Helix 4	4	A	75	83	Right-handed 310
Helix 5	5	A	89	99	Right-handed alpha
Helix 6	6	A	100	113	Right-handed alpha
Helix 7	7	A	137	142	Right-handed 310
Helix 8	8	A	151	161	Right-handed alpha
Helix 9	9	A	169	171	Right-handed 310
Helix 10	10	A	172	179	Right-handed alpha
Helix 11	11	A	189	195	Right-handed alpha
Helix 12	12	A	196	200	Right-handed 310
Helix 13	13	A	220	224	Right-handed alpha
Helix 14	14	A	227	263	Right-handed alpha
Helix 15	15	A	272	278	Right-handed alpha
Helix 16	16	A	279	303	Right-handed alpha
Helix 17	17	B	15	32	Right-handed alpha
Helix 18	18	B	48	58	Right-handed alpha
Helix 19	19	B	67	74	Right-handed 310
Helix 20	20	B	75	83	Right-handed 310
Helix 21	21	B	89	100	Right-handed alpha
Helix 22	22	B	100	113	Right-handed alpha
Helix 23	23	B	137	142	Right-handed alpha
Helix 24	24	B	151	162	Right-handed alpha
Helix 25	25	B	169	171	Right-handed 310
Helix 26	26	B	172	179	Right-handed alpha
Helix 27	27	B	189	195	Right-handed alpha
Helix 28	28	B	220	224	Right-handed alpha
Helix 29	29	B	227	263	Right-handed alpha
Helix 30	30	B	271	290	Right-handed alpha
Helix 31	31	B	291	304	Right-handed alpha
Helix 32	32	C	15	28	Right-handed alpha
Helix 33	33	C	48	58	Right-handed alpha
Helix 34	34	C	67	74	Right-handed 310
Helix 35	35	C	75	83	Right-handed 310
Helix 36	36	C	89	99	Right-handed alpha
Helix 37	37	C	100	113	Right-handed alpha
Helix 38	38	C	137	141	Right-handed 310
Helix 39	39	C	151	161	Right-handed alpha
Helix 40	40	C	169	171	Right-handed 310
Helix 41	41	C	172	179	Right-handed alpha
Helix 42	42	C	189	195	Right-handed alpha
Helix 43	43	C	196	200	Right-handed 310
Helix 44	44	C	220	226	Right-handed alpha
Helix 45	45	C	227	263	Right-handed alpha
Helix 46	46	C	272	278	Right-handed alpha
Helix 47	47	C	279	291	Right-handed alpha
Helix 48	48	D	15	32	Right-handed alpha
Helix 49	49	D	48	58	Right-handed alpha
Helix 50	50	D	67	73	Right-handed 310
Helix 51	51	D	75	82	Right-handed 310
Helix 52	52	D	89	99	Right-handed alpha
Helix 53	53	D	100	113	Right-handed alpha
Helix 54	54	D	151	161	Right-handed alpha
Helix 55	55	D	169	171	Right-handed 310
Helix 56	56	D	172	179	Right-handed alpha
Helix 57	57	D	189	195	Right-handed alpha
Helix 58	58	D	220	225	Right-handed alpha
Helix 59	59	D	227	263	Right-handed alpha
Helix 60	60	D	272	279	Right-handed alpha
Helix 61	61	D	279	290	Right-handed alpha
Helix 62	62	D	291	304	Right-handed alpha

There are 8 sheets in PDB entry 2CEX. Click on sheet of interest to get list of strands forming it: AA, AB, BA, BB, BC, CA, CB, DA,

There are 8 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	36	41	first strand
Strand 2	A	3	8	parallel
Strand 3	A	63	66	parallel
Strand 4	A	211	219	anti-parallel
Strand 5	A	116	131	anti-parallel
Strand 6	A	184	188	anti-parallel
Strand 7	A	145	148	parallel
Strand 8	A	164	167	parallel

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There are 7 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	36	41	first strand
Strand 2	A	3	8	parallel
Strand 3	A	63	66	parallel
Strand 4	A	211	219	anti-parallel
Strand 5	A	116	131	anti-parallel
Strand 6	A	203	205	anti-parallel
Strand 7	A	266	268	parallel

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There are 6 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	36	41	first strand
Strand 2	B	3	8	parallel
Strand 3	B	63	66	parallel
Strand 4	B	203	219	anti-parallel
Strand 5	B	116	131	anti-parallel
Strand 6	B	184	188	anti-parallel

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There are 5 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	36	41	first strand
Strand 2	B	3	8	parallel
Strand 3	B	63	66	parallel
Strand 4	B	203	219	anti-parallel
Strand 5	B	266	268	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	145	148	first strand
Strand 2	B	164	167	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	38	41	first strand
Strand 2	C	5	8	parallel
Strand 3	C	63	66	parallel
Strand 4	C	203	219	anti-parallel
Strand 5	C	116	131	anti-parallel
Strand 6	C	184	188	anti-parallel
Strand 7	C	145	147	parallel
Strand 8	C	164	166	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	38	41	first strand
Strand 2	C	5	8	parallel
Strand 3	C	63	66	parallel
Strand 4	C	203	219	anti-parallel
Strand 5	C	266	268	parallel

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There are 11 strands in DA sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	36	41	first strand
Strand 2	D	3	8	parallel
Strand 3	D	63	66	parallel
Strand 4	D	203	219	anti-parallel
Strand 5	D	164	166	first strand
Strand 6	D	145	147	parallel
Strand 7	D	184	188	parallel
Strand 8	D	116	131	anti-parallel
Strand 9	D	203	219	anti-parallel
Strand 10	D	266	268	parallel
Strand 11	D	203	219	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: 2CEX

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