Analysis of interatomic Contacts of Structural Units in PDB entry:
1I4K

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 1I4K entry

There are 28 chains in PDB entry 1I4K (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	PRO 3	PRO 74
B	PRO 2	ALA 73
C	PRO 3	ALA 73
D	PRO 2	ALA 73
E	PRO 3	PRO 74
F	PRO 3	ALA 73
G	PRO 3	PRO 74
H	PRO 3	ALA 73
I	PRO 2	PRO 74
J	PRO 3	ALA 73
K	PRO 2	ALA 73
L	PRO 3	ALA 73
M	PRO 2	ALA 73
N	PRO 3	ALA 73
O	PRO 3	ALA 73
P	PRO 2	ALA 73
Q	PRO 3	ALA 73
R	PRO 3	PRO 74
S	PRO 3	ALA 73
T	PRO 3	ALA 73
U	PRO 3	ALA 73
V	PRO 3	ALA 73
W	PRO 3	ALA 73
X	PRO 3	ALA 73
Y	PRO 3	ALA 73
Z	PRO 3	ALA 73
1	PRO 2	ALA 73
2	PRO 2	ALA 73

There are 28 helices in PDB entry 1I4K. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	4	11	Right-handed alpha
Helix 2	2	B	4	11	Right-handed alpha
Helix 3	3	C	4	12	Right-handed alpha
Helix 4	4	D	6	11	Right-handed alpha
Helix 5	5	E	4	11	Right-handed alpha
Helix 6	6	F	4	11	Right-handed alpha
Helix 7	7	G	4	11	Right-handed alpha
Helix 8	8	H	4	12	Right-handed alpha
Helix 9	9	I	4	11	Right-handed alpha
Helix 10	10	J	6	12	Right-handed alpha
Helix 11	11	K	4	10	Right-handed alpha
Helix 12	12	L	4	11	Right-handed alpha
Helix 13	13	M	4	11	Right-handed alpha
Helix 14	14	N	4	11	Right-handed alpha
Helix 15	15	O	5	11	Right-handed alpha
Helix 16	16	P	4	11	Right-handed alpha
Helix 17	17	Q	4	12	Right-handed alpha
Helix 18	18	R	4	12	Right-handed alpha
Helix 19	19	S	4	11	Right-handed alpha
Helix 20	20	T	4	12	Right-handed alpha
Helix 21	21	U	4	11	Right-handed alpha
Helix 22	22	V	6	11	Right-handed alpha
Helix 23	23	W	4	11	Right-handed alpha
Helix 24	24	X	4	11	Right-handed alpha
Helix 25	25	Y	4	11	Right-handed alpha
Helix 26	26	Z	4	11	Right-handed alpha
Helix 27	27	1	4	11	Right-handed alpha
Helix 28	28	2	4	12	Right-handed alpha

There are 5 sheets in PDB entry 1I4K. Click on sheet of interest to get list of strands forming it: A, B, C, D, E,

There are 36 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	16	21	first strand
Strand 2	A	26	34	anti-parallel
Strand 3	A	40	49	anti-parallel
Strand 4	A	52	62	anti-parallel
Strand 5	G	67	71	anti-parallel
Strand 6	G	16	21	anti-parallel
Strand 7	G	25	34	anti-parallel
Strand 8	G	40	49	anti-parallel
Strand 9	G	52	62	anti-parallel
Strand 10	F	67	72	anti-parallel
Strand 11	F	16	21	anti-parallel
Strand 12	F	26	34	anti-parallel
Strand 13	F	40	49	anti-parallel
Strand 14	F	52	62	anti-parallel
Strand 15	E	67	72	anti-parallel
Strand 16	E	16	21	anti-parallel
Strand 17	E	26	34	anti-parallel
Strand 18	E	40	49	anti-parallel
Strand 19	E	52	62	anti-parallel
Strand 20	D	67	72	anti-parallel
Strand 21	D	16	21	anti-parallel
Strand 22	D	25	34	anti-parallel
Strand 23	D	40	49	anti-parallel
Strand 24	D	53	62	anti-parallel
Strand 25	C	67	72	anti-parallel
Strand 26	C	16	21	anti-parallel
Strand 27	C	26	34	anti-parallel
Strand 28	C	40	48	anti-parallel
Strand 29	C	53	62	anti-parallel
Strand 30	B	67	72	anti-parallel
Strand 31	B	16	21	anti-parallel
Strand 32	B	26	34	anti-parallel
Strand 33	B	40	49	anti-parallel
Strand 34	B	52	62	anti-parallel
Strand 35	A	67	72	anti-parallel
Strand 36	A	16	21	anti-parallel

Back to list of sheets
Back to top of page

There are 37 strands in B sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	52	56	first strand
Strand 2	H	40	49	anti-parallel
Strand 3	H	59	62	anti-parallel
Strand 4	N	67	72	anti-parallel
Strand 5	N	15	21	anti-parallel
Strand 6	N	26	34	anti-parallel
Strand 7	N	40	49	anti-parallel
Strand 8	N	52	62	anti-parallel
Strand 9	M	67	72	anti-parallel
Strand 10	M	16	21	anti-parallel
Strand 11	M	26	34	anti-parallel
Strand 12	M	40	49	anti-parallel
Strand 13	M	52	62	anti-parallel
Strand 14	L	69	72	anti-parallel
Strand 15	L	16	20	anti-parallel
Strand 16	L	25	34	anti-parallel
Strand 17	L	40	49	anti-parallel
Strand 18	L	52	62	anti-parallel
Strand 19	K	67	72	anti-parallel
Strand 20	K	16	21	anti-parallel
Strand 21	K	25	34	anti-parallel
Strand 22	K	40	49	anti-parallel
Strand 23	K	53	62	anti-parallel
Strand 24	J	67	72	anti-parallel
Strand 25	J	16	21	anti-parallel
Strand 26	J	26	34	anti-parallel
Strand 27	J	40	49	anti-parallel
Strand 28	J	52	62	anti-parallel
Strand 29	I	67	72	anti-parallel
Strand 30	I	16	21	anti-parallel
Strand 31	I	26	34	anti-parallel
Strand 32	I	40	49	anti-parallel
Strand 33	I	52	62	anti-parallel
Strand 34	H	67	72	anti-parallel
Strand 35	H	16	21	anti-parallel
Strand 36	H	26	34	anti-parallel
Strand 37	H	40	49	anti-parallel

Back to list of sheets
Back to top of page

There are 33 strands in C sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	O	53	57	first strand
Strand 2	O	40	48	anti-parallel
Strand 3	O	26	34	anti-parallel
Strand 4	O	16	21	anti-parallel
Strand 5	O	67	72	anti-parallel
Strand 6	P	52	62	anti-parallel
Strand 7	P	40	49	anti-parallel
Strand 8	P	26	34	anti-parallel
Strand 9	P	16	21	anti-parallel
Strand 10	P	67	71	anti-parallel
Strand 11	Q	53	62	anti-parallel
Strand 12	Q	40	48	anti-parallel
Strand 13	Q	26	34	anti-parallel
Strand 14	Q	16	21	anti-parallel
Strand 15	Q	67	72	anti-parallel
Strand 16	R	53	62	anti-parallel
Strand 17	R	40	48	anti-parallel
Strand 18	R	26	34	anti-parallel
Strand 19	R	16	21	anti-parallel
Strand 20	R	67	72	anti-parallel
Strand 21	S	52	62	anti-parallel
Strand 22	S	40	49	anti-parallel
Strand 23	S	25	34	anti-parallel
Strand 24	S	16	21	anti-parallel
Strand 25	S	67	72	anti-parallel
Strand 26	T	52	62	anti-parallel
Strand 27	T	40	49	anti-parallel
Strand 28	T	26	34	anti-parallel
Strand 29	T	16	21	anti-parallel
Strand 30	T	67	71	anti-parallel
Strand 31	U	59	62	anti-parallel
Strand 32	U	40	49	anti-parallel
Strand 33	U	52	56	anti-parallel

Back to list of sheets
Back to top of page

There are 8 strands in D sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	O	53	57	first strand
Strand 2	O	40	48	anti-parallel
Strand 3	O	60	62	anti-parallel
Strand 4	U	67	72	anti-parallel
Strand 5	U	16	21	anti-parallel
Strand 6	U	26	34	anti-parallel
Strand 7	U	40	49	anti-parallel
Strand 8	U	52	56	anti-parallel

Back to list of sheets
Back to top of page

There are 37 strands in E sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	Y	52	55	first strand
Strand 2	Y	40	49	anti-parallel
Strand 3	Y	60	62	anti-parallel
Strand 4	X	67	72	anti-parallel
Strand 5	X	16	21	anti-parallel
Strand 6	X	26	34	anti-parallel
Strand 7	X	40	49	anti-parallel
Strand 8	X	52	62	anti-parallel
Strand 9	W	67	72	anti-parallel
Strand 10	W	16	21	anti-parallel
Strand 11	W	26	34	anti-parallel
Strand 12	W	40	49	anti-parallel
Strand 13	W	52	62	anti-parallel
Strand 14	V	67	72	anti-parallel
Strand 15	V	16	21	anti-parallel
Strand 16	V	26	34	anti-parallel
Strand 17	V	40	49	anti-parallel
Strand 18	V	52	62	anti-parallel
Strand 19	2	67	72	anti-parallel
Strand 20	2	16	21	anti-parallel
Strand 21	2	26	34	anti-parallel
Strand 22	2	40	48	anti-parallel
Strand 23	2	55	62	anti-parallel
Strand 24	1	67	71	anti-parallel
Strand 25	1	16	21	anti-parallel
Strand 26	1	26	34	anti-parallel
Strand 27	1	40	48	anti-parallel
Strand 28	1	53	62	anti-parallel
Strand 29	Z	67	72	anti-parallel
Strand 30	Z	16	21	anti-parallel
Strand 31	Z	26	34	anti-parallel
Strand 32	Z	40	49	anti-parallel
Strand 33	Z	52	62	anti-parallel
Strand 34	Y	67	72	anti-parallel
Strand 35	Y	16	21	anti-parallel
Strand 36	Y	26	34	anti-parallel
Strand 37	Y	40	49	anti-parallel

Back to list of sheets
Back to top of page

Please mail questions/suggestions concerning this page to Vladimir.Sobolev@weizmann. ac.il

Analysis of interatomic Contacts of Structural Units in PDB entry: 1I4K

Analysis of interatomic Contacts of Structural Units in PDB entry:
1I4K