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

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 3IMB entry

There are 12 chains in PDB entry 3IMB (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	MET 1	LEU 238
B	MET 1	LEU 238
C	MET 1	LEU 238
D	MET 1	LEU 238
E	G -4	G 4
F	C -4	C 4
G	G -4	G 4
H	C -4	C 4
I	G -4	G 4
J	C -4	C 4
K	G -4	G 4
L	C -4	C 4

There are 27 helices in PDB entry 3IMB. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	5	19	Right-handed alpha
Helix 2	2	A	34	44	Right-handed alpha
Helix 3	3	A	85	94	Right-handed alpha
Helix 4	4	A	150	154	Right-handed 310
Helix 5	5	A	188	194	Right-handed alpha
Helix 6	6	A	223	225	Right-handed 310
Helix 7	7	A	226	230	Right-handed alpha
Helix 8	8	B	5	19	Right-handed alpha
Helix 9	9	B	34	45	Right-handed alpha
Helix 10	10	B	85	94	Right-handed alpha
Helix 11	11	B	149	154	Right-handed 310
Helix 12	12	B	188	194	Right-handed alpha
Helix 13	13	B	223	225	Right-handed 310
Helix 14	14	B	226	230	Right-handed alpha
Helix 15	15	C	5	18	Right-handed alpha
Helix 16	16	C	34	44	Right-handed alpha
Helix 17	17	C	85	94	Right-handed alpha
Helix 18	18	C	150	154	Right-handed 310
Helix 19	19	C	188	194	Right-handed alpha
Helix 20	20	C	223	225	Right-handed 310
Helix 21	21	C	226	230	Right-handed alpha
Helix 22	22	D	5	19	Right-handed alpha
Helix 23	23	D	34	44	Right-handed alpha
Helix 24	24	D	85	94	Right-handed alpha
Helix 25	25	D	188	194	Right-handed alpha
Helix 26	26	D	223	225	Right-handed 310
Helix 27	27	D	226	230	Right-handed alpha

There are 18 sheets in PDB entry 3IMB. 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,

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	22	23	first strand
Strand 2	A	173	185	anti-parallel
Strand 3	A	231	236	anti-parallel
Strand 4	B	231	236	anti-parallel
Strand 5	B	173	185	anti-parallel
Strand 6	B	22	23	anti-parallel

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There are 8 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	60	65	first strand
Strand 2	A	156	164	parallel
Strand 3	A	173	185	anti-parallel
Strand 4	A	231	236	anti-parallel
Strand 5	B	231	236	anti-parallel
Strand 6	B	173	185	anti-parallel
Strand 7	B	156	164	anti-parallel
Strand 8	B	60	65	parallel

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There are 5 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	73	77	first strand
Strand 2	A	219	222	anti-parallel
Strand 3	A	198	206	anti-parallel
Strand 4	A	106	114	anti-parallel
Strand 5	A	95	98	anti-parallel

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There are 4 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	73	77	first strand
Strand 2	A	219	222	anti-parallel
Strand 3	A	198	206	anti-parallel
Strand 4	A	214	215	anti-parallel

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There are 4 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	82	83	first strand
Strand 2	A	141	146	anti-parallel
Strand 3	A	133	138	anti-parallel
Strand 4	A	124	130	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	73	77	first strand
Strand 2	B	219	222	anti-parallel
Strand 3	B	198	206	anti-parallel
Strand 4	B	106	114	anti-parallel
Strand 5	B	95	98	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	B	73	77	first strand
Strand 2	B	219	222	anti-parallel
Strand 3	B	198	206	anti-parallel
Strand 4	B	214	215	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	82	83	first strand
Strand 2	B	141	146	anti-parallel
Strand 3	B	133	138	anti-parallel
Strand 4	B	124	130	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	C	22	23	first strand
Strand 2	C	173	185	anti-parallel
Strand 3	C	156	164	anti-parallel
Strand 4	C	60	65	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	22	23	first strand
Strand 2	C	173	185	anti-parallel
Strand 3	C	231	236	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	73	77	first strand
Strand 2	C	219	222	anti-parallel
Strand 3	C	198	206	anti-parallel
Strand 4	C	106	114	anti-parallel
Strand 5	C	95	98	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	73	77	first strand
Strand 2	C	219	222	anti-parallel
Strand 3	C	198	206	anti-parallel
Strand 4	C	214	215	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	82	83	first strand
Strand 2	C	141	146	anti-parallel
Strand 3	C	133	138	anti-parallel
Strand 4	C	124	130	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	D	22	23	first strand
Strand 2	D	173	185	anti-parallel
Strand 3	D	156	164	anti-parallel
Strand 4	D	60	65	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	D	22	23	first strand
Strand 2	D	173	185	anti-parallel
Strand 3	D	231	236	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	73	77	first strand
Strand 2	D	219	222	anti-parallel
Strand 3	D	198	206	anti-parallel
Strand 4	D	106	114	anti-parallel
Strand 5	D	95	98	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	D	73	77	first strand
Strand 2	D	219	222	anti-parallel
Strand 3	D	198	206	anti-parallel
Strand 4	D	214	215	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	82	83	first strand
Strand 2	D	141	146	anti-parallel
Strand 3	D	133	138	anti-parallel
Strand 4	D	124	130	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: 3IMB

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