Analysis of interatomic Contacts of Structural Units in PDB entry:
9CT1

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 9CT1 entry

There are 4 chains in PDB entry 9CT1 (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	ILE 1	ASN 223
B	LEU 4	VAL 189
C	ILE 1	ASN 223
D	LEU 4	VAL 189

There are 8 helices in PDB entry 9CT1. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	AA1	A	38	42	Right-handed 310
Helix 2	AA2	A	144	152	Right-handed alpha
Helix 3	AA3	A	212	223	Right-handed alpha
Helix 4	AA4	B	91	98	Right-handed 310
Helix 5	AA5	C	38	42	Right-handed 310
Helix 6	AA6	C	144	152	Right-handed alpha
Helix 7	AA7	C	212	223	Right-handed alpha
Helix 8	AA8	D	91	99	Right-handed 310

There are 14 sheets in PDB entry 9CT1. 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,

There are 7 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	5	6	first strand
Strand 2	A	136	141	anti-parallel
Strand 3	A	115	120	anti-parallel
Strand 4	A	180	182	anti-parallel
Strand 5	A	187	195	anti-parallel
Strand 6	A	204	208	anti-parallel
Strand 7	A	160	163	anti-parallel

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There are 6 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	5	6	first strand
Strand 2	A	136	141	anti-parallel
Strand 3	A	115	120	anti-parallel
Strand 4	A	180	182	anti-parallel
Strand 5	A	187	195	anti-parallel
Strand 6	B	28	30	anti-parallel

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There are 7 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	15	19	first strand
Strand 2	A	23	31	anti-parallel
Strand 3	A	34	37	anti-parallel
Strand 4	A	86	90	anti-parallel
Strand 5	A	63	72	anti-parallel
Strand 6	A	47	50	anti-parallel
Strand 7	A	15	19	anti-parallel

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There are 2 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	22	26	first strand
Strand 2	B	184	188	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	B	36	39	first strand
Strand 2	B	51	54	anti-parallel
Strand 3	B	171	176	anti-parallel
Strand 4	B	161	168	anti-parallel
Strand 5	B	138	143	anti-parallel
Strand 6	B	127	132	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	B	66	70	first strand
Strand 2	B	82	86	anti-parallel

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There are 2 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	100	102	first strand
Strand 2	B	114	116	anti-parallel

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There are 7 strands in AA8 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	5	6	first strand
Strand 2	C	136	141	anti-parallel
Strand 3	C	115	120	anti-parallel
Strand 4	C	180	182	anti-parallel
Strand 5	C	187	195	anti-parallel
Strand 6	C	204	208	anti-parallel
Strand 7	C	160	163	anti-parallel

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There are 6 strands in AA9 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	5	6	first strand
Strand 2	C	136	141	anti-parallel
Strand 3	C	115	120	anti-parallel
Strand 4	C	180	182	anti-parallel
Strand 5	C	187	195	anti-parallel
Strand 6	D	28	30	anti-parallel

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There are 7 strands in AB1 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	15	19	first strand
Strand 2	C	23	31	anti-parallel
Strand 3	C	34	37	anti-parallel
Strand 4	C	86	90	anti-parallel
Strand 5	C	63	72	anti-parallel
Strand 6	C	47	50	anti-parallel
Strand 7	C	15	19	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	D	22	26	first strand
Strand 2	D	184	188	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	D	36	39	first strand
Strand 2	D	51	54	anti-parallel
Strand 3	D	171	176	anti-parallel
Strand 4	D	161	168	anti-parallel
Strand 5	D	138	142	anti-parallel
Strand 6	D	128	132	anti-parallel

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There are 2 strands in AB4 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	66	70	first strand
Strand 2	D	82	86	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	D	101	103	first strand
Strand 2	D	113	115	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: 9CT1

Analysis of interatomic Contacts of Structural Units in PDB entry:
9CT1