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

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 21DU entry

There are 5 chains in PDB entry 21DU (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	SER 6	LEU 246
B	SER 2	ASN 340
C	SER 8	ARG 62
N	GLN 1	VAL 126
R	THR 841	GLN 1127

There are 29 helices in PDB entry 21DU. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	AA1	A	6	32	Right-handed alpha
Helix 2	AA2	A	44	53	Right-handed alpha
Helix 3	AA3	A	54	56	Right-handed 310
Helix 4	AA4	A	95	101	Right-handed 310
Helix 5	AA5	A	117	130	Right-handed alpha
Helix 6	AA6	A	145	156	Right-handed alpha
Helix 7	AA7	A	159	164	Right-handed alpha
Helix 8	AA8	A	165	170	Right-handed alpha
Helix 9	AA9	A	183	204	Right-handed alpha
Helix 10	AB1	A	222	243	Right-handed alpha
Helix 11	AB2	B	3	26	Right-handed alpha
Helix 12	AB3	C	9	25	Right-handed alpha
Helix 13	AB4	C	29	44	Right-handed alpha
Helix 14	AB5	C	45	48	Right-handed 310
Helix 15	AB6	N	87	91	Right-handed 310
Helix 16	AB7	R	844	848	Right-handed 310
Helix 17	AB8	R	858	889	Right-handed alpha
Helix 18	AB9	R	895	923	Right-handed alpha
Helix 19	AC1	R	926	959	Right-handed alpha
Helix 20	AC2	R	969	993	Right-handed alpha
Helix 21	AC3	R	994	999	Right-handed alpha
Helix 22	AC4	R	1017	1024	Right-handed alpha
Helix 23	AC5	R	1025	1053	Right-handed alpha
Helix 24	AC6	R	1059	1077	Right-handed alpha
Helix 25	AC7	R	1079	1081	Right-handed 310
Helix 26	AC8	R	1082	1087	Right-handed alpha
Helix 27	AC9	R	1091	1105	Right-handed alpha
Helix 28	AD1	R	1105	1115	Right-handed alpha
Helix 29	AD2	R	1120	1125	Right-handed alpha

There are 10 sheets in PDB entry 21DU. Click on sheet of interest to get list of strands forming it: AA1, AA2, AA3, AA4, AA5, AA6, AA7, AA8, AA9, AB1,

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	69	76	first strand
Strand 2	A	79	86	anti-parallel
Strand 3	A	33	39	parallel
Strand 4	A	105	111	parallel
Strand 5	A	138	144	parallel
Strand 6	A	211	215	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	B	47	52	first strand
Strand 2	B	335	339	anti-parallel
Strand 3	B	327	331	anti-parallel
Strand 4	B	315	320	anti-parallel

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There are 4 strands in AA3 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	58	63	first strand
Strand 2	B	69	74	anti-parallel
Strand 3	B	78	83	anti-parallel
Strand 4	B	88	94	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	B	104	105	first strand
Strand 2	B	111	113	anti-parallel
Strand 3	B	120	125	anti-parallel
Strand 4	B	134	140	anti-parallel

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There are 4 strands in AA5 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	148	151	first strand
Strand 2	B	156	160	anti-parallel
Strand 3	B	165	170	anti-parallel
Strand 4	B	176	181	anti-parallel

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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	B	187	192	first strand
Strand 2	B	198	203	anti-parallel
Strand 3	B	208	212	anti-parallel
Strand 4	B	217	222	anti-parallel

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There are 4 strands in AA7 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	240	245	anti-parallel
Strand 3	B	250	254	anti-parallel
Strand 4	B	259	264	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	B	276	278	first strand
Strand 2	B	284	287	anti-parallel
Strand 3	B	293	298	anti-parallel
Strand 4	B	304	309	anti-parallel

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There are 4 strands in AA9 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	N	3	8	first strand
Strand 2	N	17	25	anti-parallel
Strand 3	N	78	84	anti-parallel
Strand 4	N	68	73	anti-parallel

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There are 5 strands in AB1 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	N	58	60	first strand
Strand 2	N	45	51	anti-parallel
Strand 3	N	34	39	anti-parallel
Strand 4	N	92	98	anti-parallel
Strand 5	N	122	124	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: 21DU

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