Analysis of interatomic Contacts of Structural Units in PDB entry:
1CA4

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 1CA4 entry

There are 6 chains in PDB entry 1CA4 (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	ALA 334	LEU 501
B	ALA 334	LEU 501
C	ALA 334	LEU 501
D	ALA 334	LEU 501
E	ALA 334	LEU 501
F	ALA 334	LEU 501

There are 29 helices in PDB entry 1CA4. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	335	347	Right-handed alpha
Helix 2	2	A	361	369	Right-handed alpha
Helix 3	3	A	400	402	Right-handed 310
Helix 4	4	A	419	421	Right-handed 310
Helix 5	5	A	454	456	Right-handed 310
Helix 6	6	B	335	347	Right-handed alpha
Helix 7	7	B	361	369	Right-handed alpha
Helix 8	8	B	400	402	Right-handed 310
Helix 9	9	B	419	421	Right-handed 310
Helix 10	10	B	454	456	Right-handed 310
Helix 11	11	C	335	347	Right-handed alpha
Helix 12	12	C	361	369	Right-handed alpha
Helix 13	13	C	400	402	Right-handed 310
Helix 14	14	C	419	421	Right-handed 310
Helix 15	15	C	454	456	Right-handed 310
Helix 16	16	D	335	347	Right-handed alpha
Helix 17	17	D	361	369	Right-handed alpha
Helix 18	18	D	400	402	Right-handed 310
Helix 19	19	D	419	421	Right-handed 310
Helix 20	20	D	454	456	Right-handed 310
Helix 21	21	E	335	347	Right-handed alpha
Helix 22	22	E	361	369	Right-handed alpha
Helix 23	23	E	400	402	Right-handed 310
Helix 24	24	E	419	421	Right-handed 310
Helix 25	25	F	335	347	Right-handed alpha
Helix 26	26	F	361	369	Right-handed alpha
Helix 27	27	F	400	402	Right-handed 310
Helix 28	28	F	419	421	Right-handed 310
Helix 29	29	F	454	456	Right-handed 310

There are 12 sheets in PDB entry 1CA4. Click on sheet of interest to get list of strands forming it: A, B, C, D, E, F, G, H, I, J, K, L,

There are 4 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	353	359	first strand
Strand 2	A	489	496	anti-parallel
Strand 3	A	430	434	anti-parallel
Strand 4	A	443	447	anti-parallel

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There are 3 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	389	395	first strand
Strand 2	A	408	414	anti-parallel
Strand 3	A	467	469	anti-parallel

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There are 4 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	353	359	first strand
Strand 2	B	489	496	anti-parallel
Strand 3	B	430	434	anti-parallel
Strand 4	B	443	447	anti-parallel

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There are 3 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	389	395	first strand
Strand 2	B	408	414	anti-parallel
Strand 3	B	467	469	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	C	353	359	first strand
Strand 2	C	489	496	anti-parallel
Strand 3	C	430	434	anti-parallel
Strand 4	C	443	447	anti-parallel

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There are 3 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	389	395	first strand
Strand 2	C	408	414	anti-parallel
Strand 3	C	467	469	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	D	353	359	first strand
Strand 2	D	489	496	anti-parallel
Strand 3	D	430	434	anti-parallel
Strand 4	D	443	447	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	D	375	377	first strand
Strand 2	D	389	395	anti-parallel
Strand 3	D	408	414	anti-parallel
Strand 4	D	467	469	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	E	353	359	first strand
Strand 2	E	489	496	anti-parallel
Strand 3	E	430	434	anti-parallel
Strand 4	E	443	447	anti-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	E	389	395	first strand
Strand 2	E	408	414	anti-parallel
Strand 3	E	467	469	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	F	353	359	first strand
Strand 2	F	489	496	anti-parallel
Strand 3	F	430	434	anti-parallel
Strand 4	F	443	447	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	389	395	first strand
Strand 2	F	408	414	anti-parallel
Strand 3	F	467	469	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: 1CA4

Analysis of interatomic Contacts of Structural Units in PDB entry:
1CA4