Analysis of interatomic Contacts of Structural Units in PDB entry:
1Y18

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 1Y18 entry

There are 8 chains in PDB entry 1Y18 (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
L	GLU 1	CYS 214
H	GLU 1	CYS 233
A	GLU 1	CYS 214
B	GLU 1	CYS 233
C	GLU 1	CYS 214
D	GLU 1	CYS 233
E	GLU 1	CYS 214
F	GLU 1	CYS 233

There are 43 helices in PDB entry 1Y18. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	L	28	32	Right-handed 310
Helix 2	2	L	79	83	Right-handed 310
Helix 3	3	L	121	127	Right-handed alpha
Helix 4	4	L	183	188	Right-handed alpha
Helix 5	5	H	28	32	Right-handed 310
Helix 6	6	H	61	65	Right-handed 310
Helix 7	7	H	73	75	Right-handed 310
Helix 8	8	H	83	87	Right-handed 310
Helix 9	9	H	163	165	Right-handed 310
Helix 10	10	H	196	198	Right-handed 310
Helix 11	11	H	213	216	Right-handed 310
Helix 12	12	A	28	32	Right-handed 310
Helix 13	13	A	79	83	Right-handed 310
Helix 14	14	A	121	127	Right-handed alpha
Helix 15	15	A	183	188	Right-handed alpha
Helix 16	16	B	28	32	Right-handed 310
Helix 17	17	B	73	75	Right-handed 310
Helix 18	18	B	83	87	Right-handed 310
Helix 19	19	B	133	135	Right-handed 310
Helix 20	20	B	163	165	Right-handed 310
Helix 21	21	B	196	198	Right-handed 310
Helix 22	22	B	213	216	Right-handed 310
Helix 23	23	C	28	32	Right-handed 310
Helix 24	24	C	79	83	Right-handed 310
Helix 25	25	C	121	127	Right-handed alpha
Helix 26	26	C	183	188	Right-handed alpha
Helix 27	27	D	28	32	Right-handed 310
Helix 28	28	D	73	75	Right-handed 310
Helix 29	29	D	83	87	Right-handed 310
Helix 30	30	D	163	165	Right-handed 310
Helix 31	31	D	196	198	Right-handed 310
Helix 32	32	D	213	216	Right-handed 310
Helix 33	33	E	28	32	Right-handed 310
Helix 34	34	E	79	83	Right-handed 310
Helix 35	35	E	121	127	Right-handed alpha
Helix 36	36	E	183	188	Right-handed alpha
Helix 37	37	F	28	32	Right-handed 310
Helix 38	38	F	61	64	Right-handed 310
Helix 39	39	F	73	75	Right-handed 310
Helix 40	40	F	83	87	Right-handed 310
Helix 41	41	F	163	165	Right-handed 310
Helix 42	42	F	196	200	Right-handed 310
Helix 43	43	F	213	216	Right-handed 310

There are 44 sheets in PDB entry 1Y18. Click on sheet of interest to get list of strands forming it: A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P, Q, R, S, T, U, V, W, X, Y, Z, AA, AB, AC, AD, AE, AF, AG, AH, AI, AJ, AK, AL, AM, AN, AO, AP, AQ, AR,

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	L	4	5	first strand
Strand 2	L	19	25	anti-parallel
Strand 3	L	70	75	anti-parallel
Strand 4	L	62	67	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	L	9	13	first strand
Strand 2	L	102	106	parallel
Strand 3	L	84	91	anti-parallel
Strand 4	L	34	39	anti-parallel
Strand 5	L	43	49	anti-parallel
Strand 6	L	53	54	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	L	9	13	first strand
Strand 2	L	102	106	parallel
Strand 3	L	84	91	anti-parallel
Strand 4	L	96	98	anti-parallel

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There are 4 strands in D sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	L	114	118	first strand
Strand 2	L	129	139	anti-parallel
Strand 3	L	173	182	anti-parallel
Strand 4	L	159	163	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	L	153	154	first strand
Strand 2	L	144	150	anti-parallel
Strand 3	L	191	198	anti-parallel
Strand 4	L	205	210	anti-parallel

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There are 4 strands in F sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	3	7	first strand
Strand 2	H	18	25	anti-parallel
Strand 3	H	77	82	anti-parallel
Strand 4	H	67	72	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	10	12	first strand
Strand 2	H	107	111	parallel
Strand 3	H	88	98	anti-parallel
Strand 4	H	33	39	anti-parallel
Strand 5	H	45	51	anti-parallel
Strand 6	H	57	59	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	H	10	12	first strand
Strand 2	H	107	111	parallel
Strand 3	H	88	98	anti-parallel
Strand 4	H	100	103	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	H	120	124	first strand
Strand 2	H	137	147	anti-parallel
Strand 3	H	185	194	anti-parallel
Strand 4	H	171	173	anti-parallel

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There are 4 strands in J sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	120	124	first strand
Strand 2	H	137	147	anti-parallel
Strand 3	H	185	194	anti-parallel
Strand 4	H	177	178	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	153	157	first strand
Strand 2	H	207	212	anti-parallel
Strand 3	H	217	222	anti-parallel

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There are 4 strands in L sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	4	5	first strand
Strand 2	A	19	25	anti-parallel
Strand 3	A	70	75	anti-parallel
Strand 4	A	62	67	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	9	13	first strand
Strand 2	A	102	106	parallel
Strand 3	A	84	91	anti-parallel
Strand 4	A	34	39	anti-parallel
Strand 5	A	43	49	anti-parallel
Strand 6	A	53	54	anti-parallel

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There are 4 strands in N sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	9	13	first strand
Strand 2	A	102	106	parallel
Strand 3	A	84	91	anti-parallel
Strand 4	A	96	98	anti-parallel

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There are 4 strands in O sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	114	118	first strand
Strand 2	A	129	139	anti-parallel
Strand 3	A	173	182	anti-parallel
Strand 4	A	159	163	anti-parallel

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There are 4 strands in P sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	153	154	first strand
Strand 2	A	144	150	anti-parallel
Strand 3	A	191	198	anti-parallel
Strand 4	A	205	210	anti-parallel

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There are 4 strands in Q sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	3	7	first strand
Strand 2	B	18	25	anti-parallel
Strand 3	B	77	82	anti-parallel
Strand 4	B	67	72	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	10	12	first strand
Strand 2	B	107	111	parallel
Strand 3	B	88	98	anti-parallel
Strand 4	B	33	39	anti-parallel
Strand 5	B	45	51	anti-parallel
Strand 6	B	57	59	anti-parallel

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There are 4 strands in S sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	10	12	first strand
Strand 2	B	107	111	parallel
Strand 3	B	88	98	anti-parallel
Strand 4	B	100	103	anti-parallel

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There are 4 strands in T sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	120	124	first strand
Strand 2	B	137	147	anti-parallel
Strand 3	B	185	194	anti-parallel
Strand 4	B	171	173	anti-parallel

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There are 4 strands in U sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	120	124	first strand
Strand 2	B	137	147	anti-parallel
Strand 3	B	185	194	anti-parallel
Strand 4	B	177	178	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	153	157	first strand
Strand 2	B	207	212	anti-parallel
Strand 3	B	217	222	anti-parallel

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There are 4 strands in W sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	4	5	first strand
Strand 2	C	18	25	anti-parallel
Strand 3	C	70	76	anti-parallel
Strand 4	C	62	67	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	9	13	first strand
Strand 2	C	102	106	parallel
Strand 3	C	84	91	anti-parallel
Strand 4	C	34	39	anti-parallel
Strand 5	C	43	49	anti-parallel
Strand 6	C	53	54	anti-parallel

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There are 4 strands in Y sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	9	13	first strand
Strand 2	C	102	106	parallel
Strand 3	C	84	91	anti-parallel
Strand 4	C	96	98	anti-parallel

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There are 4 strands in Z sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	114	118	first strand
Strand 2	C	129	139	anti-parallel
Strand 3	C	173	182	anti-parallel
Strand 4	C	159	163	anti-parallel

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There are 4 strands in AA sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	153	154	first strand
Strand 2	C	144	150	anti-parallel
Strand 3	C	191	198	anti-parallel
Strand 4	C	205	210	anti-parallel

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There are 4 strands in AB sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	3	7	first strand
Strand 2	D	18	25	anti-parallel
Strand 3	D	77	82	anti-parallel
Strand 4	D	67	72	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	10	12	first strand
Strand 2	D	107	111	parallel
Strand 3	D	88	98	anti-parallel
Strand 4	D	33	39	anti-parallel
Strand 5	D	45	51	anti-parallel
Strand 6	D	57	59	anti-parallel

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There are 4 strands in AD sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	10	12	first strand
Strand 2	D	107	111	parallel
Strand 3	D	88	98	anti-parallel
Strand 4	D	100	103	anti-parallel

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There are 4 strands in AE sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	120	124	first strand
Strand 2	D	137	147	anti-parallel
Strand 3	D	185	194	anti-parallel
Strand 4	D	171	173	anti-parallel

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There are 4 strands in AF sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	120	124	first strand
Strand 2	D	137	147	anti-parallel
Strand 3	D	185	194	anti-parallel
Strand 4	D	177	178	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	153	157	first strand
Strand 2	D	207	212	anti-parallel
Strand 3	D	217	222	anti-parallel

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There are 4 strands in AH sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	4	5	first strand
Strand 2	E	19	25	anti-parallel
Strand 3	E	70	75	anti-parallel
Strand 4	E	62	67	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	9	13	first strand
Strand 2	E	102	106	parallel
Strand 3	E	84	91	anti-parallel
Strand 4	E	34	39	anti-parallel
Strand 5	E	43	49	anti-parallel
Strand 6	E	53	54	anti-parallel

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There are 4 strands in AJ sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	9	13	first strand
Strand 2	E	102	106	parallel
Strand 3	E	84	91	anti-parallel
Strand 4	E	96	98	anti-parallel

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There are 4 strands in AK sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	114	118	first strand
Strand 2	E	129	139	anti-parallel
Strand 3	E	173	182	anti-parallel
Strand 4	E	159	163	anti-parallel

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There are 4 strands in AL sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	153	154	first strand
Strand 2	E	144	150	anti-parallel
Strand 3	E	191	198	anti-parallel
Strand 4	E	205	210	anti-parallel

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There are 4 strands in AM sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	3	7	first strand
Strand 2	F	18	25	anti-parallel
Strand 3	F	77	82	anti-parallel
Strand 4	F	68	72	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	10	12	first strand
Strand 2	F	107	111	parallel
Strand 3	F	88	98	anti-parallel
Strand 4	F	33	39	anti-parallel
Strand 5	F	45	51	anti-parallel
Strand 6	F	57	59	anti-parallel

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There are 4 strands in AO sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	10	12	first strand
Strand 2	F	107	111	parallel
Strand 3	F	88	98	anti-parallel
Strand 4	F	100	103	anti-parallel

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There are 4 strands in AP sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	120	124	first strand
Strand 2	F	137	147	anti-parallel
Strand 3	F	185	194	anti-parallel
Strand 4	F	171	173	anti-parallel

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There are 4 strands in AQ sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	120	124	first strand
Strand 2	F	137	147	anti-parallel
Strand 3	F	185	194	anti-parallel
Strand 4	F	177	178	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	153	157	first strand
Strand 2	F	206	212	anti-parallel
Strand 3	F	217	223	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: 1Y18

Analysis of interatomic Contacts of Structural Units in PDB entry:
1Y18