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

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 21IR entry

There are 4 chains in PDB entry 21IR (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
C	GLU 1755	CYS 1785
D	ASP 1574	PRO 1604
A	VAL 37	LEU 356
B	LEU 2712	PRO 3294

There are 11 helices in PDB entry 21IR. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	AA1	C	1755	1784	Right-handed alpha
Helix 2	AA2	D	1575	1596	Right-handed alpha
Helix 3	AA3	A	116	120	Right-handed 310
Helix 4	AA4	A	227	232	Right-handed 310
Helix 5	AA5	B	2713	2732	Right-handed alpha
Helix 6	AA6	B	2753	2757	Right-handed 310
Helix 7	AA7	B	2937	2942	Right-handed alpha
Helix 8	AA8	B	3056	3060	Right-handed 310
Helix 9	AA9	B	3074	3079	Right-handed alpha
Helix 10	AB1	B	3102	3106	Right-handed 310
Helix 11	AB2	B	3117	3121	Right-handed 310

There are 13 sheets in PDB entry 21IR. 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,

There are 6 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	40	44	first strand
Strand 2	A	133	144	parallel
Strand 3	A	122	129	anti-parallel
Strand 4	A	63	68	anti-parallel
Strand 5	A	77	82	anti-parallel
Strand 6	A	90	92	anti-parallel

Back to list of sheets
Back to top of page

There are 3 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	49	51	first strand
Strand 2	A	110	112	anti-parallel
Strand 3	A	103	104	anti-parallel

Back to list of sheets
Back to top of page

There are 10 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	151	154	first strand
Strand 2	A	167	177	anti-parallel
Strand 3	A	216	224	anti-parallel
Strand 4	A	202	210	anti-parallel
Strand 5	B	2851	2859	parallel
Strand 6	B	2839	2847	anti-parallel
Strand 7	B	2829	2836	anti-parallel
Strand 8	B	2759	2766	anti-parallel
Strand 9	B	2897	2905	anti-parallel
Strand 10	B	2737	2740	anti-parallel

Back to list of sheets
Back to top of page

There are 10 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	151	154	first strand
Strand 2	A	167	177	anti-parallel
Strand 3	A	216	224	anti-parallel
Strand 4	A	202	210	anti-parallel
Strand 5	B	2851	2859	parallel
Strand 6	B	2839	2847	anti-parallel
Strand 7	B	2829	2836	anti-parallel
Strand 8	B	2759	2766	anti-parallel
Strand 9	B	2897	2905	anti-parallel
Strand 10	B	2908	2909	anti-parallel

Back to list of sheets
Back to top of page

There are 2 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	159	160	first strand
Strand 2	A	260	261	parallel

Back to list of sheets
Back to top of page

There are 4 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	190	191	first strand
Strand 2	A	182	187	anti-parallel
Strand 3	A	235	242	anti-parallel
Strand 4	A	248	252	anti-parallel

Back to list of sheets
Back to top of page

There are 3 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	267	271	first strand
Strand 2	A	287	293	anti-parallel
Strand 3	A	320	324	anti-parallel

Back to list of sheets
Back to top of page

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	313	317	first strand
Strand 2	A	301	305	anti-parallel
Strand 3	A	334	339	anti-parallel
Strand 4	A	351	355	anti-parallel

Back to list of sheets
Back to top of page

There are 7 strands in AA9 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	2815	2819	first strand
Strand 2	B	2803	2809	anti-parallel
Strand 3	B	2794	2800	anti-parallel
Strand 4	B	2779	2787	anti-parallel
Strand 5	B	2874	2878	anti-parallel
Strand 6	B	2744	2747	anti-parallel
Strand 7	B	2915	2919	anti-parallel

Back to list of sheets
Back to top of page

There are 8 strands in AB1 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	3009	3010	first strand
Strand 2	B	2997	3003	anti-parallel
Strand 3	B	2987	2994	anti-parallel
Strand 4	B	2977	2984	anti-parallel
Strand 5	B	3062	3065	anti-parallel
Strand 6	B	2944	2955	anti-parallel
Strand 7	B	3088	3096	anti-parallel
Strand 8	B	3099	3101	anti-parallel

Back to list of sheets
Back to top of page

There are 7 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	3046	3051	first strand
Strand 2	B	3038	3043	anti-parallel
Strand 3	B	3025	3032	anti-parallel
Strand 4	B	2963	2972	anti-parallel
Strand 5	B	3088	3096	anti-parallel
Strand 6	B	2944	2955	anti-parallel
Strand 7	B	3109	3113	anti-parallel

Back to list of sheets
Back to top of page

There are 7 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	3220	3226	first strand
Strand 2	B	3212	3217	anti-parallel
Strand 3	B	3202	3208	anti-parallel
Strand 4	B	3147	3154	anti-parallel
Strand 5	B	3261	3267	anti-parallel
Strand 6	B	3124	3127	anti-parallel
Strand 7	B	3288	3290	anti-parallel

Back to list of sheets
Back to top of page

There are 7 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	3189	3191	first strand
Strand 2	B	3182	3184	anti-parallel
Strand 3	B	3171	3176	anti-parallel
Strand 4	B	3160	3166	anti-parallel
Strand 5	B	3243	3246	anti-parallel
Strand 6	B	3133	3136	anti-parallel
Strand 7	B	3284	3285	anti-parallel

Back to list of sheets
Back to top of page

Please mail questions/suggestions concerning this page to Vladimir.Sobolev@weizmann. ac.il

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

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