Analysis of interatomic Contacts of Structural Units in PDB entry:
1B26

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 1B26 entry

There are 6 chains in PDB entry 1B26 (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	SER 4	GLY 412
B	SER 4	GLY 412
C	SER 4	GLY 412
D	SER 4	GLY 412
E	SER 4	GLY 412
F	SER 4	GLY 412

There are 56 helices in PDB entry 1B26. 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	24	31	Right-handed alpha
Helix 3	3	A	79	96	Right-handed alpha
Helix 4	4	A	111	113	Right-handed 310
Helix 5	5	A	116	129	Right-handed alpha
Helix 6	6	A	130	132	Right-handed 310
Helix 7	7	A	149	163	Right-handed alpha
Helix 8	8	A	176	178	Right-handed 310
Helix 9	9	A	184	202	Right-handed alpha
Helix 10	10	A	219	232	Right-handed alpha
Helix 11	11	A	254	263	Right-handed alpha
Helix 12	12	A	278	282	Right-handed alpha
Helix 13	13	A	300	303	Right-handed alpha
Helix 14	14	A	321	329	Right-handed alpha
Helix 15	15	A	337	340	Right-handed alpha
Helix 16	16	A	343	356	Right-handed alpha
Helix 17	17	A	363	388	Right-handed alpha
Helix 18	18	A	392	411	Right-handed alpha
Helix 19	19	B	5	19	Right-handed alpha
Helix 20	20	B	24	31	Right-handed alpha
Helix 21	21	B	79	96	Right-handed alpha
Helix 22	22	B	111	113	Right-handed 310
Helix 23	23	B	116	129	Right-handed alpha
Helix 24	24	B	130	132	Right-handed 310
Helix 25	25	B	149	163	Right-handed alpha
Helix 26	26	B	176	178	Right-handed 310
Helix 27	27	B	184	202	Right-handed alpha
Helix 28	28	B	219	232	Right-handed alpha
Helix 29	29	B	254	263	Right-handed alpha
Helix 30	30	B	278	282	Right-handed alpha
Helix 31	31	B	300	303	Right-handed alpha
Helix 32	32	B	321	329	Right-handed alpha
Helix 33	33	B	337	340	Right-handed alpha
Helix 34	34	B	343	357	Right-handed alpha
Helix 35	35	B	363	388	Right-handed alpha
Helix 36	36	B	392	411	Right-handed alpha
Helix 37	37	C	5	19	Right-handed alpha
Helix 38	38	C	24	31	Right-handed alpha
Helix 39	39	C	79	96	Right-handed alpha
Helix 40	40	C	111	113	Right-handed 310
Helix 41	41	C	116	129	Right-handed alpha
Helix 42	42	C	130	132	Right-handed 310
Helix 43	43	C	149	163	Right-handed alpha
Helix 44	44	C	176	178	Right-handed 310
Helix 45	45	C	184	203	Right-handed alpha
Helix 46	46	C	219	232	Right-handed alpha
Helix 47	47	C	254	263	Right-handed alpha
Helix 48	48	C	278	282	Right-handed alpha
Helix 49	49	C	300	303	Right-handed alpha
Helix 50	50	C	321	329	Right-handed alpha
Helix 51	51	C	337	340	Right-handed alpha
Helix 52	52	C	343	356	Right-handed alpha
Helix 53	53	C	363	388	Right-handed alpha
Helix 54	54	C	392	411	Right-handed alpha
Helix 55	55	D	5	19	Right-handed alpha
Helix 56	56	D	24	31	Right-handed alpha

There are 9 sheets in PDB entry 1B26. Click on sheet of interest to get list of strands forming it: A, B, C, D, E, F, G, H, I,

There are 10 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	139	142	first strand
Strand 2	A	67	73	parallel
Strand 3	A	101	108	parallel
Strand 4	A	50	61	anti-parallel
Strand 5	A	35	44	anti-parallel
Strand 6	F	35	44	anti-parallel
Strand 7	F	50	61	anti-parallel
Strand 8	F	101	108	anti-parallel
Strand 9	F	67	73	parallel
Strand 10	F	139	142	parallel

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There are 7 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	274	276	first strand
Strand 2	A	244	247	anti-parallel
Strand 3	A	235	241	anti-parallel
Strand 4	A	211	215	parallel
Strand 5	A	288	291	parallel
Strand 6	A	310	312	parallel
Strand 7	A	333	335	parallel

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There are 10 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	139	142	first strand
Strand 2	B	67	73	parallel
Strand 3	B	101	108	parallel
Strand 4	B	50	61	anti-parallel
Strand 5	B	35	44	anti-parallel
Strand 6	E	35	44	anti-parallel
Strand 7	E	50	61	anti-parallel
Strand 8	E	101	108	anti-parallel
Strand 9	E	67	73	parallel
Strand 10	E	139	142	parallel

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There are 7 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	274	276	first strand
Strand 2	B	244	247	anti-parallel
Strand 3	B	235	241	anti-parallel
Strand 4	B	211	215	parallel
Strand 5	B	288	291	parallel
Strand 6	B	310	312	parallel
Strand 7	B	333	335	parallel

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There are 10 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	139	142	first strand
Strand 2	C	67	73	parallel
Strand 3	C	101	107	parallel
Strand 4	C	50	61	anti-parallel
Strand 5	C	35	44	anti-parallel
Strand 6	D	35	44	anti-parallel
Strand 7	D	50	61	anti-parallel
Strand 8	D	101	108	anti-parallel
Strand 9	D	67	73	parallel
Strand 10	D	139	142	parallel

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There are 7 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	274	276	first strand
Strand 2	C	245	247	anti-parallel
Strand 3	C	235	240	anti-parallel
Strand 4	C	211	215	parallel
Strand 5	C	288	291	parallel
Strand 6	C	310	312	parallel
Strand 7	C	333	335	parallel

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There are 7 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	274	276	first strand
Strand 2	D	245	247	anti-parallel
Strand 3	D	235	240	anti-parallel
Strand 4	D	211	215	parallel
Strand 5	D	288	291	parallel
Strand 6	D	310	312	parallel
Strand 7	D	333	335	parallel

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There are 7 strands in H sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	274	276	first strand
Strand 2	E	245	247	anti-parallel
Strand 3	E	235	240	anti-parallel
Strand 4	E	211	215	parallel
Strand 5	E	288	291	parallel
Strand 6	E	310	312	parallel
Strand 7	E	333	335	parallel

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There are 7 strands in I sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	274	276	first strand
Strand 2	F	244	247	anti-parallel
Strand 3	F	235	241	anti-parallel
Strand 4	F	211	215	parallel
Strand 5	F	288	291	parallel
Strand 6	F	310	312	parallel
Strand 7	F	333	335	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: 1B26

Analysis of interatomic Contacts of Structural Units in PDB entry:
1B26