Analysis of interatomic Contacts of Structural Units in PDB entry:
4X23

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 4X23 entry

There are 24 chains in PDB entry 4X23 (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
I	T 2	T 147
J	A 1	A 146
A	ARG 40	GLU 134
B	ASP 24	GLY 102
C	SER 15	PRO 116
D	GLU 32	SER 121
E	ARG 40	LEU 137
F	ASP 24	GLY 102
G	SER 15	PRO 116
H	GLU 32	SER 121
V	VAL 712	TYR 733
U	ASN 716	LEU 720
S	T 2	T 147
T	A 1	A 146
K	ARG 40	GLU 134
L	ASP 24	GLY 102
M	SER 15	PRO 116
N	GLU 32	SER 121
O	ARG 40	LEU 137
P	ASP 24	GLY 102
Q	SER 15	PRO 116
R	GLU 32	THR 119
X	ARG 713	TYR 733
W	SER 715	ARG 717

There are 68 helices in PDB entry 4X23. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	AA1	A	44	56	Right-handed alpha
Helix 2	AA2	A	63	77	Right-handed alpha
Helix 3	AA3	A	85	114	Right-handed alpha
Helix 4	AA4	A	120	132	Right-handed alpha
Helix 5	AA5	B	25	29	Right-handed 310
Helix 6	AA6	B	30	41	Right-handed alpha
Helix 7	AA7	B	49	76	Right-handed alpha
Helix 8	AA8	B	82	92	Right-handed alpha
Helix 9	AA9	C	25	36	Right-handed alpha
Helix 10	AB1	C	45	71	Right-handed alpha
Helix 11	AB2	C	78	87	Right-handed alpha
Helix 12	AB3	C	89	96	Right-handed alpha
Helix 13	AB4	C	111	115	Right-handed 310
Helix 14	AB5	D	34	46	Right-handed alpha
Helix 15	AB6	D	52	81	Right-handed alpha
Helix 16	AB7	D	87	99	Right-handed alpha
Helix 17	AB8	D	101	118	Right-handed alpha
Helix 18	AB9	E	44	56	Right-handed alpha
Helix 19	AC1	E	63	79	Right-handed alpha
Helix 20	AC2	E	85	114	Right-handed alpha
Helix 21	AC3	E	120	132	Right-handed alpha
Helix 22	AC4	F	25	29	Right-handed 310
Helix 23	AC5	F	30	41	Right-handed alpha
Helix 24	AC6	F	49	76	Right-handed alpha
Helix 25	AC7	F	82	92	Right-handed alpha
Helix 26	AC8	G	25	36	Right-handed alpha
Helix 27	AC9	G	45	71	Right-handed alpha
Helix 28	AD1	G	78	87	Right-handed alpha
Helix 29	AD2	G	89	96	Right-handed alpha
Helix 30	AD3	G	111	115	Right-handed 310
Helix 31	AD4	H	34	46	Right-handed alpha
Helix 32	AD5	H	52	81	Right-handed alpha
Helix 33	AD6	H	87	99	Right-handed alpha
Helix 34	AD7	H	102	121	Right-handed alpha
Helix 35	AD8	K	44	56	Right-handed alpha
Helix 36	AD9	K	63	79	Right-handed alpha
Helix 37	AE1	K	85	114	Right-handed alpha
Helix 38	AE2	K	120	132	Right-handed alpha
Helix 39	AE3	L	25	29	Right-handed 310
Helix 40	AE4	L	30	41	Right-handed alpha
Helix 41	AE5	L	49	76	Right-handed alpha
Helix 42	AE6	L	82	92	Right-handed alpha
Helix 43	AE7	M	25	36	Right-handed alpha
Helix 44	AE8	M	45	71	Right-handed alpha
Helix 45	AE9	M	78	87	Right-handed alpha
Helix 46	AF1	M	89	96	Right-handed alpha
Helix 47	AF2	M	111	115	Right-handed 310
Helix 48	AF3	N	34	46	Right-handed alpha
Helix 49	AF4	N	52	81	Right-handed alpha
Helix 50	AF5	N	87	99	Right-handed alpha
Helix 51	AF6	N	102	118	Right-handed alpha
Helix 52	AF7	O	44	56	Right-handed alpha
Helix 53	AF8	O	63	79	Right-handed alpha
Helix 54	AF9	O	85	114	Right-handed alpha
Helix 55	AG1	O	120	132	Right-handed alpha
Helix 56	AG2	P	25	29	Right-handed 310
Helix 57	AG3	P	30	41	Right-handed alpha
Helix 58	AG4	P	49	76	Right-handed alpha
Helix 59	AG5	P	82	92	Right-handed alpha
Helix 60	AG6	Q	25	36	Right-handed alpha
Helix 61	AG7	Q	45	71	Right-handed alpha
Helix 62	AG8	Q	78	87	Right-handed alpha
Helix 63	AG9	Q	89	96	Right-handed alpha
Helix 64	AH1	Q	111	115	Right-handed 310
Helix 65	AH2	R	34	46	Right-handed alpha
Helix 66	AH3	R	52	81	Right-handed alpha
Helix 67	AH4	R	87	99	Right-handed alpha
Helix 68	AH5	R	100	118	Right-handed alpha

There are 20 sheets in PDB entry 4X23. 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,

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	83	84	first strand
Strand 2	B	80	81	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	118	119	first strand
Strand 2	B	45	46	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	B	96	98	first strand
Strand 2	G	99	101	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	C	41	42	first strand
Strand 2	D	85	86	parallel

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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	C	76	77	first strand
Strand 2	D	50	51	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	C	100	101	first strand
Strand 2	F	97	98	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	E	83	84	first strand
Strand 2	F	80	81	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	E	118	119	first strand
Strand 2	F	45	46	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	G	41	42	first strand
Strand 2	H	85	86	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	G	76	77	first strand
Strand 2	H	50	51	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	K	83	84	first strand
Strand 2	L	80	81	parallel

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There are 2 strands in AB3 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	K	118	119	first strand
Strand 2	L	45	46	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	L	97	98	first strand
Strand 2	Q	100	101	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	M	41	42	first strand
Strand 2	N	85	86	parallel

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There are 2 strands in AB6 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	M	76	77	first strand
Strand 2	N	50	51	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	M	100	101	first strand
Strand 2	P	97	98	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	O	83	84	first strand
Strand 2	P	80	81	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	O	118	119	first strand
Strand 2	P	45	46	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	Q	41	42	first strand
Strand 2	R	85	86	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	Q	76	77	first strand
Strand 2	R	50	51	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: 4X23

Analysis of interatomic Contacts of Structural Units in PDB entry:
4X23