Analysis of interatomic Contacts of Structural Units in PDB entry:
2E21

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 2E21 entry

There are 4 chains in PDB entry 2E21 (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	MET 1	VAL 317
B	MET 1	SER 314
C	MET 1	SER 314
D	MET 1	SER 314

There are 61 helices in PDB entry 2E21. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	2	19	Right-handed alpha
Helix 2	2	A	34	48	Right-handed alpha
Helix 3	3	A	68	83	Right-handed alpha
Helix 4	4	A	93	98	Right-handed alpha
Helix 5	5	A	104	125	Right-handed alpha
Helix 6	6	A	134	148	Right-handed alpha
Helix 7	7	A	151	157	Right-handed alpha
Helix 8	8	A	173	184	Right-handed alpha
Helix 9	9	A	192	196	Right-handed 310
Helix 10	10	A	199	208	Right-handed alpha
Helix 11	11	A	208	216	Right-handed alpha
Helix 12	12	A	218	248	Right-handed alpha
Helix 13	13	A	256	260	Right-handed alpha
Helix 14	14	A	263	276	Right-handed alpha
Helix 15	15	A	279	288	Right-handed alpha
Helix 16	16	A	289	291	Right-handed 310
Helix 17	17	B	2	19	Right-handed alpha
Helix 18	18	B	34	48	Right-handed alpha
Helix 19	19	B	68	83	Right-handed alpha
Helix 20	20	B	93	101	Right-handed alpha
Helix 21	21	B	104	125	Right-handed alpha
Helix 22	22	B	134	149	Right-handed alpha
Helix 23	23	B	151	157	Right-handed alpha
Helix 24	24	B	173	184	Right-handed alpha
Helix 25	25	B	199	207	Right-handed alpha
Helix 26	26	B	207	214	Right-handed alpha
Helix 27	27	B	218	246	Right-handed alpha
Helix 28	28	B	255	262	Right-handed alpha
Helix 29	29	B	263	276	Right-handed alpha
Helix 30	30	B	279	289	Right-handed alpha
Helix 31	31	C	2	19	Right-handed alpha
Helix 32	32	C	34	48	Right-handed alpha
Helix 33	33	C	67	84	Right-handed alpha
Helix 34	34	C	93	101	Right-handed alpha
Helix 35	35	C	104	125	Right-handed alpha
Helix 36	36	C	134	149	Right-handed alpha
Helix 37	37	C	151	157	Right-handed alpha
Helix 38	38	C	173	184	Right-handed alpha
Helix 39	39	C	192	196	Right-handed 310
Helix 40	40	C	199	208	Right-handed alpha
Helix 41	41	C	208	213	Right-handed alpha
Helix 42	42	C	218	247	Right-handed alpha
Helix 43	43	C	255	261	Right-handed alpha
Helix 44	44	C	263	276	Right-handed alpha
Helix 45	45	C	279	287	Right-handed alpha
Helix 46	46	C	288	291	Right-handed 310
Helix 47	47	D	2	19	Right-handed alpha
Helix 48	48	D	34	47	Right-handed alpha
Helix 49	49	D	67	83	Right-handed alpha
Helix 50	50	D	93	101	Right-handed alpha
Helix 51	51	D	104	124	Right-handed alpha
Helix 52	52	D	134	149	Right-handed alpha
Helix 53	53	D	151	157	Right-handed alpha
Helix 54	54	D	173	184	Right-handed alpha
Helix 55	55	D	199	207	Right-handed alpha
Helix 56	56	D	207	213	Right-handed alpha
Helix 57	57	D	218	248	Right-handed alpha
Helix 58	58	D	255	261	Right-handed alpha
Helix 59	59	D	263	276	Right-handed alpha
Helix 60	60	D	279	288	Right-handed alpha
Helix 61	61	D	289	291	Right-handed 310

There are 8 sheets in PDB entry 2E21. Click on sheet of interest to get list of strands forming it: A, B, C, D, E, F, G, H,

There are 6 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	87	91	first strand
Strand 2	A	55	62	parallel
Strand 3	A	26	30	parallel
Strand 4	A	128	130	parallel
Strand 5	A	165	166	parallel
Strand 6	A	161	162	anti-parallel

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There are 5 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	249	250	first strand
Strand 2	A	253	255	anti-parallel
Strand 3	A	310	313	anti-parallel
Strand 4	A	303	307	anti-parallel
Strand 5	A	295	297	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	87	91	first strand
Strand 2	B	55	62	parallel
Strand 3	B	26	30	parallel
Strand 4	B	128	130	parallel
Strand 5	B	165	166	parallel
Strand 6	B	161	162	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	295	297	first strand
Strand 2	B	303	306	anti-parallel
Strand 3	B	311	313	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	87	91	first strand
Strand 2	C	55	62	parallel
Strand 3	C	26	30	parallel
Strand 4	C	128	130	parallel
Strand 5	C	165	166	parallel
Strand 6	C	161	162	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	253	254	first strand
Strand 2	C	311	313	anti-parallel
Strand 3	C	304	306	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	86	91	first strand
Strand 2	D	55	62	parallel
Strand 3	D	26	30	parallel
Strand 4	D	128	130	parallel
Strand 5	D	165	166	parallel
Strand 6	D	161	162	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	249	250	first strand
Strand 2	D	253	254	anti-parallel
Strand 3	D	311	313	anti-parallel
Strand 4	D	303	306	anti-parallel
Strand 5	D	295	297	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: 2E21

Analysis of interatomic Contacts of Structural Units in PDB entry:
2E21