Analysis of interatomic Contacts of Structural Units in PDB entry:
21EI

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 21EI entry

There are 7 chains in PDB entry 21EI (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	ASP 134	VAL 551
B	SER 26	TYR 550
E	SER 26	ILE 326
D	ASN 115	LYS 214
C	ASN 115	LYS 214
H	ASN 115	LYS 214
G	ILE 118	CYS 211

There are 12 helices in PDB entry 21EI. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	AA1	A	196	198	Right-handed 310
Helix 2	AA2	A	268	272	Right-handed 310
Helix 3	AA3	B	196	199	Right-handed 310
Helix 4	AA4	B	390	394	Right-handed 310
Helix 5	AA5	E	196	198	Right-handed 310
Helix 6	AA6	D	116	128	Right-handed alpha
Helix 7	AA7	D	140	145	Right-handed alpha
Helix 8	AA8	C	118	129	Right-handed alpha
Helix 9	AA9	C	140	144	Right-handed alpha
Helix 10	AB1	H	116	128	Right-handed alpha
Helix 11	AB2	G	119	129	Right-handed alpha
Helix 12	AB3	G	140	145	Right-handed alpha

There are 39 sheets in PDB entry 21EI. 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, AB7, AB8, AB9, AC1, AC2, AC3, AC4, AC5, AC6, AC7, AC8, AC9, AD1, AD2, AD3, AD4, AD5, AD6, AD7, AD8, AD9, AE1, AE2, AE3,

There are 5 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	144	148	first strand
Strand 2	A	220	224	parallel
Strand 3	A	203	208	anti-parallel
Strand 4	A	168	170	anti-parallel
Strand 5	A	175	176	anti-parallel

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There are 4 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	144	148	first strand
Strand 2	A	220	224	parallel
Strand 3	A	203	208	anti-parallel
Strand 4	A	215	216	anti-parallel

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There are 3 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	153	156	first strand
Strand 2	A	190	194	anti-parallel
Strand 3	A	184	186	anti-parallel

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There are 4 strands in AA4 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	229	232	first strand
Strand 2	A	254	256	anti-parallel
Strand 3	A	289	296	anti-parallel
Strand 4	A	277	284	anti-parallel

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There are 3 strands in AA5 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	263	267	first strand
Strand 2	A	307	313	anti-parallel
Strand 3	A	322	324	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	A	333	335	first strand
Strand 2	A	358	360	anti-parallel

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There are 2 strands in AA7 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	350	355	first strand
Strand 2	A	383	388	anti-parallel

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There are 4 strands in AA8 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	373	374	first strand
Strand 2	A	365	370	anti-parallel
Strand 3	A	396	403	anti-parallel
Strand 4	A	408	415	anti-parallel

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There are 3 strands in AA9 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	441	447	first strand
Strand 2	A	514	523	anti-parallel
Strand 3	A	504	511	anti-parallel

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There are 3 strands in AB1 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	456	459	first strand
Strand 2	A	530	538	anti-parallel
Strand 3	A	541	549	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	B	31	32	first strand
Strand 2	B	47	53	anti-parallel
Strand 3	B	92	98	anti-parallel
Strand 4	B	81	84	anti-parallel

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There are 4 strands in AB3 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	39	41	first strand
Strand 2	B	125	132	parallel
Strand 3	B	107	113	anti-parallel
Strand 4	B	57	60	anti-parallel

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There are 5 strands in AB4 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	144	148	first strand
Strand 2	B	220	224	parallel
Strand 3	B	203	208	anti-parallel
Strand 4	B	167	170	anti-parallel
Strand 5	B	175	176	anti-parallel

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There are 4 strands in AB5 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	144	148	first strand
Strand 2	B	220	224	parallel
Strand 3	B	203	208	anti-parallel
Strand 4	B	215	216	anti-parallel

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There are 3 strands in AB6 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	153	156	first strand
Strand 2	B	190	194	anti-parallel
Strand 3	B	183	186	anti-parallel

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There are 4 strands in AB7 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	229	234	first strand
Strand 2	B	249	256	anti-parallel
Strand 3	B	289	296	anti-parallel
Strand 4	B	277	284	anti-parallel

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There are 3 strands in AB8 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	263	267	first strand
Strand 2	B	307	313	anti-parallel
Strand 3	B	318	324	anti-parallel

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There are 3 strands in AB9 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	333	337	first strand
Strand 2	B	352	360	anti-parallel
Strand 3	B	383	386	anti-parallel

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There are 5 strands in AC1 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	342	345	first strand
Strand 2	B	408	418	parallel
Strand 3	B	395	403	anti-parallel
Strand 4	B	365	370	anti-parallel
Strand 5	B	373	374	anti-parallel

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There are 3 strands in AC2 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	441	446	first strand
Strand 2	B	518	523	anti-parallel
Strand 3	B	501	507	anti-parallel

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There are 4 strands in AC3 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	490	491	first strand
Strand 2	B	457	462	anti-parallel
Strand 3	B	530	538	anti-parallel
Strand 4	B	541	549	anti-parallel

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There are 2 strands in AC4 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	510	511	first strand
Strand 2	B	514	515	anti-parallel

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There are 4 strands in AC5 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	31	32	first strand
Strand 2	E	47	53	anti-parallel
Strand 3	E	92	98	anti-parallel
Strand 4	E	81	84	anti-parallel

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There are 4 strands in AC6 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	38	42	first strand
Strand 2	E	125	133	parallel
Strand 3	E	107	113	anti-parallel
Strand 4	E	57	60	anti-parallel

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There are 5 strands in AC7 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	144	148	first strand
Strand 2	E	220	224	parallel
Strand 3	E	203	208	anti-parallel
Strand 4	E	168	170	anti-parallel
Strand 5	E	175	176	anti-parallel

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There are 4 strands in AC8 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	144	148	first strand
Strand 2	E	220	224	parallel
Strand 3	E	203	208	anti-parallel
Strand 4	E	215	216	anti-parallel

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There are 3 strands in AC9 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	153	156	first strand
Strand 2	E	190	194	anti-parallel
Strand 3	E	183	186	anti-parallel

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There are 4 strands in AD1 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	229	232	first strand
Strand 2	E	254	256	anti-parallel
Strand 3	E	289	295	anti-parallel
Strand 4	E	250	251	anti-parallel

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There are 4 strands in AD2 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	229	232	first strand
Strand 2	E	254	256	anti-parallel
Strand 3	E	289	295	anti-parallel
Strand 4	E	278	282	anti-parallel

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There are 3 strands in AD3 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	263	265	first strand
Strand 2	E	309	313	anti-parallel
Strand 3	E	318	322	anti-parallel

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There are 2 strands in AD4 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	132	139	first strand
Strand 2	D	156	163	anti-parallel

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There are 3 strands in AD5 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	150	153	first strand
Strand 2	D	171	189	anti-parallel
Strand 3	D	197	213	anti-parallel

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There are 2 strands in AD6 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	132	139	first strand
Strand 2	C	156	163	anti-parallel

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There are 3 strands in AD7 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	150	153	first strand
Strand 2	C	171	189	anti-parallel
Strand 3	C	197	213	anti-parallel

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There are 2 strands in AD8 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	134	139	first strand
Strand 2	H	156	161	anti-parallel

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There are 3 strands in AD9 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	150	152	first strand
Strand 2	H	171	189	anti-parallel
Strand 3	H	197	213	anti-parallel

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There are 2 strands in AE1 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	G	133	139	first strand
Strand 2	G	156	162	anti-parallel

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There are 3 strands in AE2 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	G	150	153	first strand
Strand 2	G	179	189	anti-parallel
Strand 3	G	199	205	anti-parallel

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There are 2 strands in AE3 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	G	174	175	first strand
Strand 2	G	209	210	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: 21EI

Analysis of interatomic Contacts of Structural Units in PDB entry:
21EI