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

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 21ZX entry

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

Chain ID	Initial residue	Terminal residue
A	SER 319	LEU 736
B	PRO 322	LEU 736
C	PRO 320	LEU 736
D	LEU 323	THR 491

There are 38 helices in PDB entry 21ZX. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	AA1	A	325	337	Right-handed alpha
Helix 2	AA2	A	348	350	Right-handed 310
Helix 3	AA3	A	379	383	Right-handed 310
Helix 4	AA4	A	478	489	Right-handed alpha
Helix 5	AA5	A	525	537	Right-handed alpha
Helix 6	AA6	A	550	565	Right-handed alpha
Helix 7	AA7	A	581	589	Right-handed alpha
Helix 8	AA8	A	629	638	Right-handed alpha
Helix 9	AA9	A	638	647	Right-handed alpha
Helix 10	AB1	A	698	703	Right-handed alpha
Helix 11	AB2	B	325	337	Right-handed alpha
Helix 12	AB3	B	348	350	Right-handed 310
Helix 13	AB4	B	379	383	Right-handed 310
Helix 14	AB5	B	478	489	Right-handed alpha
Helix 15	AB6	B	525	537	Right-handed alpha
Helix 16	AB7	B	550	565	Right-handed alpha
Helix 17	AB8	B	580	588	Right-handed alpha
Helix 18	AB9	B	629	647	Right-handed alpha
Helix 19	AC1	C	325	337	Right-handed alpha
Helix 20	AC2	C	348	350	Right-handed 310
Helix 21	AC3	C	379	383	Right-handed 310
Helix 22	AC4	C	478	489	Right-handed alpha
Helix 23	AC5	C	525	537	Right-handed alpha
Helix 24	AC6	C	550	565	Right-handed alpha
Helix 25	AC7	C	581	589	Right-handed alpha
Helix 26	AC8	C	629	638	Right-handed alpha
Helix 27	AC9	C	638	647	Right-handed alpha
Helix 28	AD1	D	325	337	Right-handed alpha
Helix 29	AD2	D	348	350	Right-handed 310
Helix 30	AD3	D	379	383	Right-handed 310
Helix 31	AD4	D	478	489	Right-handed alpha
Helix 32	AD5	D	525	537	Right-handed alpha
Helix 33	AD6	D	550	565	Right-handed alpha
Helix 34	AD7	D	580	589	Right-handed alpha
Helix 35	AD8	D	629	638	Right-handed alpha
Helix 36	AD9	D	638	647	Right-handed alpha
Helix 37	AE1	F	66	76	Right-handed alpha
Helix 38	AE2	G	67	76	Right-handed alpha

There are 33 sheets in PDB entry 21ZX. 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, AB5, AB6, AB7, AB8, AB9, AC1, AC2, AC3, AC4, AC5, AC6, AC7, AC8, AC9, AD1, AD2, AD3, AD4, AD5, AD6,

There are 2 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	342	346	first strand
Strand 2	A	492	496	anti-parallel

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There are 2 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	359	360	first strand
Strand 2	A	469	471	anti-parallel

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There are 2 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	370	371	first strand
Strand 2	A	457	458	anti-parallel

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There are 6 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	423	426	first strand
Strand 2	A	375	378	anti-parallel
Strand 3	A	407	411	anti-parallel
Strand 4	A	385	390	parallel
Strand 5	A	444	447	anti-parallel
Strand 6	A	430	434	anti-parallel

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There are 6 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	541	547	first strand
Strand 2	A	501	506	parallel
Strand 3	A	567	571	parallel
Strand 4	A	617	624	parallel
Strand 5	A	608	614	anti-parallel
Strand 6	A	593	596	anti-parallel

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There are 2 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	510	511	first strand
Strand 2	A	522	523	parallel

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There are 6 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	656	661	first strand
Strand 2	A	688	691	parallel
Strand 3	A	672	679	anti-parallel
Strand 4	A	708	712	anti-parallel
Strand 5	A	727	732	anti-parallel
Strand 6	A	656	661	anti-parallel

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There are 2 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	665	666	first strand
Strand 2	A	721	722	anti-parallel

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There are 2 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	342	346	first strand
Strand 2	B	492	496	anti-parallel

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There are 2 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	359	360	first strand
Strand 2	B	469	471	anti-parallel

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There are 2 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	370	371	first strand
Strand 2	B	457	458	anti-parallel

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There are 6 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	423	426	first strand
Strand 2	B	375	378	anti-parallel
Strand 3	B	407	411	anti-parallel
Strand 4	B	385	393	parallel
Strand 5	B	444	447	anti-parallel
Strand 6	B	430	432	anti-parallel

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There are 6 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	541	547	first strand
Strand 2	B	501	506	parallel
Strand 3	B	567	571	parallel
Strand 4	B	617	624	parallel
Strand 5	B	608	614	anti-parallel
Strand 6	B	593	596	anti-parallel

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There are 2 strands in AB5 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	510	511	first strand
Strand 2	B	522	523	parallel

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There are 6 strands in AB6 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	656	661	first strand
Strand 2	B	688	691	parallel
Strand 3	B	672	679	anti-parallel
Strand 4	B	708	712	anti-parallel
Strand 5	B	727	732	anti-parallel
Strand 6	B	656	661	anti-parallel

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There are 2 strands in AB7 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	665	666	first strand
Strand 2	B	721	722	anti-parallel

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There are 2 strands in AB8 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	323	324	first strand
Strand 2	C	598	599	parallel

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There are 2 strands in AB9 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	342	346	first strand
Strand 2	C	492	496	anti-parallel

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There are 2 strands in AC1 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	359	360	first strand
Strand 2	C	469	471	anti-parallel

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There are 2 strands in AC2 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	370	371	first strand
Strand 2	C	457	458	anti-parallel

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There are 6 strands in AC3 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	423	426	first strand
Strand 2	C	375	378	anti-parallel
Strand 3	C	407	411	anti-parallel
Strand 4	C	385	390	parallel
Strand 5	C	442	447	anti-parallel
Strand 6	C	430	435	anti-parallel

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There are 6 strands in AC4 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	541	547	first strand
Strand 2	C	501	506	parallel
Strand 3	C	567	571	parallel
Strand 4	C	617	624	parallel
Strand 5	C	608	614	anti-parallel
Strand 6	C	593	596	anti-parallel

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There are 2 strands in AC5 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	510	511	first strand
Strand 2	C	522	523	parallel

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There are 6 strands in AC6 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	656	661	first strand
Strand 2	C	688	691	parallel
Strand 3	C	672	679	anti-parallel
Strand 4	C	708	712	anti-parallel
Strand 5	C	727	732	anti-parallel
Strand 6	C	656	661	anti-parallel

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There are 2 strands in AC7 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	665	666	first strand
Strand 2	C	721	722	anti-parallel

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There are 2 strands in AC8 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	342	346	first strand
Strand 2	D	492	496	anti-parallel

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There are 2 strands in AC9 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	359	360	first strand
Strand 2	D	469	471	anti-parallel

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There are 2 strands in AD1 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	370	371	first strand
Strand 2	D	457	458	anti-parallel

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There are 6 strands in AD2 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	423	426	first strand
Strand 2	D	375	378	anti-parallel
Strand 3	D	407	411	anti-parallel
Strand 4	D	385	392	parallel
Strand 5	D	444	447	anti-parallel
Strand 6	D	430	432	anti-parallel

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There are 6 strands in AD3 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	541	547	first strand
Strand 2	D	501	506	parallel
Strand 3	D	567	571	parallel
Strand 4	D	617	624	parallel
Strand 5	D	608	614	anti-parallel
Strand 6	D	593	596	anti-parallel

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There are 2 strands in AD4 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	510	511	first strand
Strand 2	D	522	523	parallel

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There are 6 strands in AD5 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	656	661	first strand
Strand 2	D	688	691	parallel
Strand 3	D	672	679	anti-parallel
Strand 4	D	708	712	anti-parallel
Strand 5	D	727	732	anti-parallel
Strand 6	D	656	661	anti-parallel

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There are 2 strands in AD6 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	665	666	first strand
Strand 2	D	721	722	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: 21ZX

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