Analysis of interatomic Contacts of Structural Units in PDB entry:
1F4A

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 1F4A entry

There are 4 chains in PDB entry 1F4A (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	ILE 3	LYS 1023
B	ILE 3	LYS 1023
C	ILE 3	LYS 1023
D	ILE 3	LYS 1023

There are100 helices in PDB entry 1F4A. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	6	11	Right-handed alpha
Helix 2	2	A	12	18	Right-handed 310
Helix 3	3	A	38	44	Right-handed alpha
Helix 4	4	A	65	69	Right-handed 310
Helix 5	5	A	70	70	Right-handed 310
Helix 6	6	A	71	76	Right-handed alpha
Helix 7	7	A	89	93	Right-handed 310
Helix 8	8	A	130	136	Right-handed alpha
Helix 9	9	A	192	197	Right-handed 310
Helix 10	10	A	368	382	Right-handed alpha
Helix 11	11	A	396	406	Right-handed alpha
Helix 12	12	A	429	431	Right-handed 310
Helix 13	13	A	432	448	Right-handed alpha
Helix 14	14	A	465	479	Right-handed alpha
Helix 15	15	A	519	524	Right-handed alpha
Helix 16	16	A	548	559	Right-handed alpha
Helix 17	17	A	598	603	Right-handed 310
Helix 18	18	A	615	624	Right-handed alpha
Helix 19	19	A	789	794	Right-handed alpha
Helix 20	20	A	805	814	Right-handed alpha
Helix 21	21	A	815	818	Right-handed 310
Helix 22	22	A	923	926	Right-handed 310
Helix 23	23	A	963	970	Right-handed alpha
Helix 24	24	A	972	976	Right-handed 310
Helix 25	25	A	1004	1008	Right-handed 310
Helix 26	26	B	6	11	Right-handed alpha
Helix 27	27	B	12	18	Right-handed 310
Helix 28	28	B	38	44	Right-handed alpha
Helix 29	29	B	65	69	Right-handed 310
Helix 30	30	B	70	70	Right-handed 310
Helix 31	31	B	71	76	Right-handed alpha
Helix 32	32	B	89	93	Right-handed 310
Helix 33	33	B	130	136	Right-handed alpha
Helix 34	34	B	192	197	Right-handed 310
Helix 35	35	B	368	382	Right-handed alpha
Helix 36	36	B	396	406	Right-handed alpha
Helix 37	37	B	429	431	Right-handed 310
Helix 38	38	B	432	448	Right-handed alpha
Helix 39	39	B	465	479	Right-handed alpha
Helix 40	40	B	519	524	Right-handed alpha
Helix 41	41	B	548	559	Right-handed alpha
Helix 42	42	B	598	603	Right-handed 310
Helix 43	43	B	615	624	Right-handed alpha
Helix 44	44	B	789	794	Right-handed alpha
Helix 45	45	B	805	814	Right-handed alpha
Helix 46	46	B	815	818	Right-handed 310
Helix 47	47	B	923	926	Right-handed 310
Helix 48	48	B	963	970	Right-handed alpha
Helix 49	49	B	972	976	Right-handed 310
Helix 50	50	B	1004	1008	Right-handed 310
Helix 51	51	C	6	11	Right-handed alpha
Helix 52	52	C	12	18	Right-handed 310
Helix 53	53	C	38	44	Right-handed alpha
Helix 54	54	C	65	69	Right-handed 310
Helix 55	55	C	70	70	Right-handed 310
Helix 56	56	C	71	76	Right-handed alpha
Helix 57	57	C	89	93	Right-handed 310
Helix 58	58	C	130	136	Right-handed alpha
Helix 59	59	C	192	197	Right-handed 310
Helix 60	60	C	368	382	Right-handed alpha
Helix 61	61	C	396	406	Right-handed alpha
Helix 62	62	C	429	431	Right-handed 310
Helix 63	63	C	432	448	Right-handed alpha
Helix 64	64	C	465	479	Right-handed alpha
Helix 65	65	C	519	524	Right-handed alpha
Helix 66	66	C	548	559	Right-handed alpha
Helix 67	67	C	598	603	Right-handed 310
Helix 68	68	C	615	624	Right-handed alpha
Helix 69	69	C	789	794	Right-handed alpha
Helix 70	70	C	805	814	Right-handed alpha
Helix 71	71	C	815	818	Right-handed 310
Helix 72	72	C	923	926	Right-handed 310
Helix 73	73	C	963	970	Right-handed alpha
Helix 74	74	C	972	976	Right-handed 310
Helix 75	75	C	1004	1008	Right-handed 310
Helix 76	76	D	6	11	Right-handed alpha
Helix 77	77	D	12	18	Right-handed 310
Helix 78	78	D	38	44	Right-handed alpha
Helix 79	79	D	65	69	Right-handed 310
Helix 80	80	D	70	70	Right-handed 310
Helix 81	81	D	71	76	Right-handed alpha
Helix 82	82	D	89	93	Right-handed 310
Helix 83	83	D	130	136	Right-handed alpha
Helix 84	84	D	192	197	Right-handed 310
Helix 85	85	D	368	382	Right-handed alpha
Helix 86	86	D	396	406	Right-handed alpha
Helix 87	87	D	429	431	Right-handed 310
Helix 88	88	D	432	448	Right-handed alpha
Helix 89	89	D	465	479	Right-handed alpha
Helix 90	90	D	519	524	Right-handed alpha
Helix 91	91	D	548	559	Right-handed alpha
Helix 92	92	D	598	603	Right-handed 310
Helix 93	93	D	615	624	Right-handed alpha
Helix 94	94	D	789	794	Right-handed alpha
Helix 95	95	D	805	814	Right-handed alpha
Helix 96	96	D	815	818	Right-handed 310
Helix 97	97	D	923	926	Right-handed 310
Helix 98	98	D	963	970	Right-handed alpha
Helix 99	99	D	972	976	Right-handed 310
Helix 100	100	D	1004	1008	Right-handed 310

There are 56 sheets in PDB entry 1F4A. 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, AS, AT, AU, AV, AW, AX, AY, AZ, BA, BB, BC, BD,

There are 7 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	23	24	first strand
Strand 2	A	157	163	anti-parallel
Strand 3	A	149	154	anti-parallel
Strand 4	A	180	189	anti-parallel
Strand 5	A	120	129	anti-parallel
Strand 6	A	56	63	anti-parallel
Strand 7	A	82	86	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	51	53	first strand
Strand 2	A	212	217	anti-parallel
Strand 3	A	138	143	anti-parallel
Strand 4	A	169	172	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	99	101	first strand
Strand 2	A	202	204	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	146	147	first strand
Strand 2	A	207	208	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	221	231	first strand
Strand 2	A	237	247	anti-parallel
Strand 3	A	288	296	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	A	265	272	first strand
Strand 2	A	254	262	anti-parallel
Strand 3	A	309	317	anti-parallel
Strand 4	A	322	330	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	335	338	first strand
Strand 2	A	341	344	anti-parallel
Strand 3	A	347	348	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	484	485	first strand
Strand 2	A	453	457	parallel
Strand 3	A	408	412	parallel
Strand 4	A	386	388	parallel
Strand 5	A	351	355	parallel
Strand 6	A	562	567	parallel
Strand 7	A	533	538	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	575	578	first strand
Strand 2	A	584	587	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	627	632	first strand
Strand 2	A	635	640	anti-parallel
Strand 3	A	677	681	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	661	669	first strand
Strand 2	A	651	658	anti-parallel
Strand 3	A	692	702	anti-parallel
Strand 4	A	713	725	anti-parallel

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There are 5 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	739	742	first strand
Strand 2	A	746	751	anti-parallel
Strand 3	A	754	759	anti-parallel
Strand 4	A	765	770	anti-parallel
Strand 5	A	773	774	anti-parallel

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There are 9 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	822	829	first strand
Strand 2	A	833	844	anti-parallel
Strand 3	A	847	859	anti-parallel
Strand 4	A	864	872	anti-parallel
Strand 5	A	1013	1022	anti-parallel
Strand 6	A	949	960	anti-parallel
Strand 7	A	938	946	anti-parallel
Strand 8	A	894	901	anti-parallel
Strand 9	A	914	921	anti-parallel

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There are 9 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	822	829	first strand
Strand 2	A	833	844	anti-parallel
Strand 3	A	847	859	anti-parallel
Strand 4	A	864	872	anti-parallel
Strand 5	A	1013	1022	anti-parallel
Strand 6	A	949	960	anti-parallel
Strand 7	A	982	990	anti-parallel
Strand 8	A	881	888	anti-parallel
Strand 9	A	776	783	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	23	24	first strand
Strand 2	B	157	163	anti-parallel
Strand 3	B	149	154	anti-parallel
Strand 4	B	180	189	anti-parallel
Strand 5	B	120	129	anti-parallel
Strand 6	B	56	63	anti-parallel
Strand 7	B	82	86	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	B	51	53	first strand
Strand 2	B	212	217	anti-parallel
Strand 3	B	138	143	anti-parallel
Strand 4	B	169	172	anti-parallel

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There are 2 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	99	101	first strand
Strand 2	B	202	204	anti-parallel

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There are 2 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	146	147	first strand
Strand 2	B	207	208	anti-parallel

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There are 3 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	221	231	first strand
Strand 2	B	237	247	anti-parallel
Strand 3	B	288	296	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	265	272	first strand
Strand 2	B	254	262	anti-parallel
Strand 3	B	309	317	anti-parallel
Strand 4	B	322	330	anti-parallel

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There are 3 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	335	338	first strand
Strand 2	B	341	344	anti-parallel
Strand 3	B	347	348	anti-parallel

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There are 7 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	484	485	first strand
Strand 2	B	453	457	parallel
Strand 3	B	408	412	parallel
Strand 4	B	386	388	parallel
Strand 5	B	351	355	parallel
Strand 6	B	562	567	parallel
Strand 7	B	533	538	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	575	578	first strand
Strand 2	B	584	587	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	627	632	first strand
Strand 2	B	635	640	anti-parallel
Strand 3	B	677	681	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	B	661	669	first strand
Strand 2	B	651	658	anti-parallel
Strand 3	B	692	702	anti-parallel
Strand 4	B	713	725	anti-parallel

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There are 5 strands in Z sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	739	742	first strand
Strand 2	B	746	751	anti-parallel
Strand 3	B	754	759	anti-parallel
Strand 4	B	765	770	anti-parallel
Strand 5	B	773	774	anti-parallel

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There are 9 strands in AA sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	822	829	first strand
Strand 2	B	833	844	anti-parallel
Strand 3	B	847	859	anti-parallel
Strand 4	B	864	872	anti-parallel
Strand 5	B	1013	1022	anti-parallel
Strand 6	B	949	960	anti-parallel
Strand 7	B	938	946	anti-parallel
Strand 8	B	894	901	anti-parallel
Strand 9	B	914	921	anti-parallel

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There are 9 strands in AB sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	822	829	first strand
Strand 2	B	833	844	anti-parallel
Strand 3	B	847	859	anti-parallel
Strand 4	B	864	872	anti-parallel
Strand 5	B	1013	1022	anti-parallel
Strand 6	B	949	960	anti-parallel
Strand 7	B	982	990	anti-parallel
Strand 8	B	881	888	anti-parallel
Strand 9	B	776	783	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	23	24	first strand
Strand 2	C	157	163	anti-parallel
Strand 3	C	149	154	anti-parallel
Strand 4	C	180	189	anti-parallel
Strand 5	C	120	129	anti-parallel
Strand 6	C	56	63	anti-parallel
Strand 7	C	82	86	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	C	51	53	first strand
Strand 2	C	212	217	anti-parallel
Strand 3	C	138	143	anti-parallel
Strand 4	C	169	172	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	99	101	first strand
Strand 2	C	202	204	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	146	147	first strand
Strand 2	C	207	208	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	C	221	231	first strand
Strand 2	C	237	247	anti-parallel
Strand 3	C	288	296	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	C	265	272	first strand
Strand 2	C	254	262	anti-parallel
Strand 3	C	309	317	anti-parallel
Strand 4	C	322	330	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	335	338	first strand
Strand 2	C	341	344	anti-parallel
Strand 3	C	347	348	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	484	485	first strand
Strand 2	C	453	457	parallel
Strand 3	C	408	412	parallel
Strand 4	C	386	388	parallel
Strand 5	C	351	355	parallel
Strand 6	C	562	567	parallel
Strand 7	C	533	538	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	575	578	first strand
Strand 2	C	584	587	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	627	632	first strand
Strand 2	C	635	640	anti-parallel
Strand 3	C	677	681	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	C	661	669	first strand
Strand 2	C	651	658	anti-parallel
Strand 3	C	692	702	anti-parallel
Strand 4	C	713	725	anti-parallel

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There are 5 strands in AN sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	739	742	first strand
Strand 2	C	746	751	anti-parallel
Strand 3	C	754	759	anti-parallel
Strand 4	C	765	770	anti-parallel
Strand 5	C	773	774	anti-parallel

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There are 9 strands in AO sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	822	829	first strand
Strand 2	C	833	844	anti-parallel
Strand 3	C	847	859	anti-parallel
Strand 4	C	864	872	anti-parallel
Strand 5	C	1013	1022	anti-parallel
Strand 6	C	949	960	anti-parallel
Strand 7	C	938	946	anti-parallel
Strand 8	C	894	901	anti-parallel
Strand 9	C	914	921	anti-parallel

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There are 9 strands in AP sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	822	829	first strand
Strand 2	C	833	844	anti-parallel
Strand 3	C	847	859	anti-parallel
Strand 4	C	864	872	anti-parallel
Strand 5	C	1013	1022	anti-parallel
Strand 6	C	949	960	anti-parallel
Strand 7	C	982	990	anti-parallel
Strand 8	C	881	888	anti-parallel
Strand 9	C	776	783	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	23	24	first strand
Strand 2	D	157	163	anti-parallel
Strand 3	D	149	154	anti-parallel
Strand 4	D	180	189	anti-parallel
Strand 5	D	120	129	anti-parallel
Strand 6	D	56	63	anti-parallel
Strand 7	D	82	86	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	51	53	first strand
Strand 2	D	212	217	anti-parallel
Strand 3	D	138	143	anti-parallel
Strand 4	D	169	172	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	99	101	first strand
Strand 2	D	202	204	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	146	147	first strand
Strand 2	D	207	208	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	221	231	first strand
Strand 2	D	237	247	anti-parallel
Strand 3	D	288	296	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	265	272	first strand
Strand 2	D	254	262	anti-parallel
Strand 3	D	309	317	anti-parallel
Strand 4	D	322	330	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	335	338	first strand
Strand 2	D	341	344	anti-parallel
Strand 3	D	347	348	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	484	485	first strand
Strand 2	D	453	457	parallel
Strand 3	D	408	412	parallel
Strand 4	D	386	388	parallel
Strand 5	D	351	355	parallel
Strand 6	D	562	567	parallel
Strand 7	D	533	538	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	575	578	first strand
Strand 2	D	584	587	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	627	632	first strand
Strand 2	D	635	640	anti-parallel
Strand 3	D	677	681	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	661	669	first strand
Strand 2	D	651	658	anti-parallel
Strand 3	D	692	702	anti-parallel
Strand 4	D	713	725	anti-parallel

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There are 5 strands in BB sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	739	742	first strand
Strand 2	D	746	751	anti-parallel
Strand 3	D	754	759	anti-parallel
Strand 4	D	765	770	anti-parallel
Strand 5	D	773	774	anti-parallel

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There are 9 strands in BC sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	822	829	first strand
Strand 2	D	833	844	anti-parallel
Strand 3	D	847	859	anti-parallel
Strand 4	D	864	872	anti-parallel
Strand 5	D	1013	1022	anti-parallel
Strand 6	D	949	960	anti-parallel
Strand 7	D	938	946	anti-parallel
Strand 8	D	894	901	anti-parallel
Strand 9	D	914	921	anti-parallel

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There are 9 strands in BD sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	822	829	first strand
Strand 2	D	833	844	anti-parallel
Strand 3	D	847	859	anti-parallel
Strand 4	D	864	872	anti-parallel
Strand 5	D	1013	1022	anti-parallel
Strand 6	D	949	960	anti-parallel
Strand 7	D	982	990	anti-parallel
Strand 8	D	881	888	anti-parallel
Strand 9	D	776	783	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: 1F4A

Analysis of interatomic Contacts of Structural Units in PDB entry:
1F4A