Analysis of interatomic Contacts of Structural Units in PDB entry:
1L3A

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 1L3A entry

There are 4 chains in PDB entry 1L3A (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	THR 89	GLU 254
B	THR 89	GLU 271
C	THR 89	HIS 281
D	THR 89	GLU 271

There are 20 helices in PDB entry 1L3A. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	144	148	Right-handed 310
Helix 2	2	A	154	163	Right-handed alpha
Helix 3	3	A	210	213	Right-handed 310
Helix 4	4	A	224	242	Right-handed alpha
Helix 5	5	A	243	249	Right-handed alpha
Helix 6	6	B	144	148	Right-handed 310
Helix 7	7	B	154	163	Right-handed alpha
Helix 8	8	B	224	242	Right-handed alpha
Helix 9	9	B	243	249	Right-handed alpha
Helix 10	10	C	145	148	Right-handed 310
Helix 11	11	C	154	163	Right-handed alpha
Helix 12	12	C	224	243	Right-handed alpha
Helix 13	13	C	243	249	Right-handed alpha
Helix 14	14	C	275	279	Right-handed 310
Helix 15	15	D	118	120	Right-handed 310
Helix 16	16	D	144	148	Right-handed 310
Helix 17	17	D	154	163	Right-handed alpha
Helix 18	18	D	211	213	Right-handed 310
Helix 19	19	D	224	242	Right-handed alpha
Helix 20	20	D	243	249	Right-handed alpha

There are 13 sheets in PDB entry 1L3A. 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,

There are 3 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	92	93	first strand
Strand 2	B	122	126	parallel
Strand 3	B	113	116	anti-parallel

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There are 4 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	96	99	first strand
Strand 2	A	103	110	anti-parallel
Strand 3	A	129	136	anti-parallel
Strand 4	A	149	153	anti-parallel

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There are 3 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	113	116	first strand
Strand 2	A	121	126	anti-parallel
Strand 3	D	91	93	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	170	174	first strand
Strand 2	A	187	194	anti-parallel
Strand 3	A	200	209	anti-parallel
Strand 4	A	214	223	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	92	93	first strand
Strand 2	C	122	126	parallel
Strand 3	C	113	116	anti-parallel

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There are 4 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	96	100	first strand
Strand 2	B	103	110	anti-parallel
Strand 3	B	129	136	anti-parallel
Strand 4	B	149	153	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	170	174	first strand
Strand 2	B	186	194	anti-parallel
Strand 3	B	200	209	anti-parallel
Strand 4	B	214	223	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	92	93	first strand
Strand 2	D	122	126	parallel
Strand 3	D	113	116	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	96	99	first strand
Strand 2	C	103	110	anti-parallel
Strand 3	C	129	139	anti-parallel
Strand 4	C	142	143	anti-parallel

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There are 4 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	96	99	first strand
Strand 2	C	103	110	anti-parallel
Strand 3	C	129	139	anti-parallel
Strand 4	C	149	153	anti-parallel

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There are 4 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	170	174	first strand
Strand 2	C	186	194	anti-parallel
Strand 3	C	200	209	anti-parallel
Strand 4	C	215	223	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	D	96	99	first strand
Strand 2	D	103	110	anti-parallel
Strand 3	D	129	136	anti-parallel
Strand 4	D	149	153	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	D	170	174	first strand
Strand 2	D	186	194	anti-parallel
Strand 3	D	200	209	anti-parallel
Strand 4	D	214	223	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: 1L3A

Analysis of interatomic Contacts of Structural Units in PDB entry:
1L3A