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

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 4BBR entry

There is 1 chain in PDB entry 4BBR (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	GLY 3	GLU 1307

There are142 helices in PDB entry 4BBR. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	23	31	Right-handed alpha
Helix 2	2	A	95	106	Right-handed alpha
Helix 3	3	A	119	126	Right-handed alpha
Helix 4	4	A	130	143	Right-handed alpha
Helix 5	5	A	203	213	Right-handed alpha
Helix 6	6	A	215	222	Right-handed alpha
Helix 7	7	A	230	233	Right-handed 310
Helix 8	8	A	243	247	Right-handed 310
Helix 9	9	A	261	282	Right-handed alpha
Helix 10	10	A	286	305	Right-handed alpha
Helix 11	11	A	324	331	Right-handed alpha
Helix 12	12	A	336	342	Right-handed alpha
Helix 13	13	A	368	372	Right-handed alpha
Helix 14	14	A	384	395	Right-handed alpha
Helix 15	15	A	451	453	Right-handed 310
Helix 16	16	A	474	479	Right-handed alpha
Helix 17	17	A	494	505	Right-handed alpha
Helix 18	18	A	507	511	Right-handed 310
Helix 19	19	A	524	536	Right-handed alpha
Helix 20	20	A	543	553	Right-handed alpha
Helix 21	21	A	574	579	Right-handed alpha
Helix 22	22	A	618	623	Right-handed alpha
Helix 23	23	A	629	638	Right-handed alpha
Helix 24	24	A	638	661	Right-handed alpha
Helix 25	25	A	665	670	Right-handed 310
Helix 26	26	A	672	699	Right-handed alpha
Helix 27	27	A	709	737	Right-handed alpha
Helix 28	28	A	741	750	Right-handed alpha
Helix 29	29	A	754	763	Right-handed alpha
Helix 30	30	A	809	846	Right-handed alpha
Helix 31	31	A	874	876	Right-handed 310
Helix 32	32	A	889	898	Right-handed alpha
Helix 33	33	A	915	920	Right-handed alpha
Helix 34	34	A	922	947	Right-handed alpha
Helix 35	35	A	959	972	Right-handed alpha
Helix 36	36	A	982	997	Right-handed alpha
Helix 37	37	A	1004	1026	Right-handed alpha
Helix 38	38	A	1027	1034	Right-handed alpha
Helix 39	39	A	1038	1057	Right-handed alpha
Helix 40	40	A	1064	1078	Right-handed alpha
Helix 41	41	A	1097	1107	Right-handed alpha
Helix 42	42	A	1122	1126	Right-handed 310
Helix 43	43	A	1127	1139	Right-handed alpha
Helix 44	44	A	1166	1173	Right-handed alpha
Helix 45	45	A	1198	1205	Right-handed alpha
Helix 46	46	A	1208	1221	Right-handed alpha
Helix 47	47	A	1222	1224	Right-handed 310
Helix 48	48	A	1256	1271	Right-handed alpha
Helix 49	49	A	1312	1318	Right-handed alpha
Helix 50	50	A	1331	1340	Right-handed alpha
Helix 51	51	A	1340	1359	Right-handed alpha
Helix 52	52	A	1364	1377	Right-handed alpha
Helix 53	53	A	1388	1392	Right-handed 310
Helix 54	54	A	1395	1401	Right-handed alpha
Helix 55	55	A	1404	1415	Right-handed alpha
Helix 56	56	A	1423	1430	Right-handed alpha
Helix 57	57	A	1436	1439	Right-handed 310
Helix 58	58	A	1446	1454	Right-handed alpha
Helix 59	59	B	29	41	Right-handed alpha
Helix 60	60	B	44	57	Right-handed alpha
Helix 61	61	B	57	66	Right-handed alpha
Helix 62	62	B	113	120	Right-handed alpha
Helix 63	63	B	185	192	Right-handed alpha
Helix 64	64	B	282	288	Right-handed alpha
Helix 65	65	B	293	302	Right-handed alpha
Helix 66	66	B	307	321	Right-handed alpha
Helix 67	67	B	326	337	Right-handed alpha
Helix 68	68	B	346	359	Right-handed alpha
Helix 69	69	B	371	390	Right-handed alpha
Helix 70	70	B	400	402	Right-handed 310
Helix 71	71	B	408	439	Right-handed alpha
Helix 72	72	B	443	448	Right-handed alpha
Helix 73	73	B	450	464	Right-handed alpha
Helix 74	74	B	487	495	Right-handed alpha
Helix 75	75	B	515	519	Right-handed 310
Helix 76	76	B	551	560	Right-handed alpha
Helix 77	77	B	567	569	Right-handed 310
Helix 78	78	B	592	605	Right-handed alpha
Helix 79	79	B	654	667	Right-handed alpha
Helix 80	80	B	680	687	Right-handed alpha
Helix 81	81	B	696	701	Right-handed 310
Helix 82	82	B	706	711	Right-handed alpha
Helix 83	83	B	744	749	Right-handed 310
Helix 84	84	B	752	756	Right-handed 310
Helix 85	85	B	758	762	Right-handed 310
Helix 86	86	B	763	775	Right-handed alpha
Helix 87	87	B	806	811	Right-handed 310
Helix 88	88	B	843	848	Right-handed alpha
Helix 89	89	B	1013	1017	Right-handed 310
Helix 90	90	B	1022	1039	Right-handed alpha
Helix 91	91	B	1051	1062	Right-handed alpha
Helix 92	92	B	1098	1102	Right-handed 310
Helix 93	93	B	1131	1142	Right-handed alpha
Helix 94	94	B	1143	1152	Right-handed alpha
Helix 95	95	B	1197	1210	Right-handed alpha
Helix 96	96	C	26	40	Right-handed alpha
Helix 97	97	C	59	69	Right-handed alpha
Helix 98	98	C	76	80	Right-handed 310
Helix 99	99	C	82	86	Right-handed 310
Helix 100	100	C	116	118	Right-handed 310
Helix 101	101	C	167	171	Right-handed 310
Helix 102	102	C	196	201	Right-handed alpha
Helix 103	103	C	204	210	Right-handed 310
Helix 104	104	C	239	265	Right-handed alpha
Helix 105	105	D	16	20	Right-handed 310
Helix 106	106	D	53	74	Right-handed alpha
Helix 107	107	D	119	134	Right-handed alpha
Helix 108	108	D	138	152	Right-handed alpha
Helix 109	109	D	156	168	Right-handed alpha
Helix 110	110	D	173	183	Right-handed alpha
Helix 111	111	D	187	195	Right-handed alpha
Helix 112	112	D	203	218	Right-handed alpha
Helix 113	113	E	2	4	Right-handed 310
Helix 114	114	E	5	26	Right-handed alpha
Helix 115	115	E	31	36	Right-handed alpha
Helix 116	116	E	38	47	Right-handed alpha
Helix 117	117	E	54	59	Right-handed alpha
Helix 118	118	E	67	72	Right-handed alpha
Helix 119	119	E	89	103	Right-handed alpha
Helix 120	120	E	119	124	Right-handed 310
Helix 121	121	E	143	147	Right-handed 310
Helix 122	122	E	157	168	Right-handed alpha
Helix 123	123	E	182	189	Right-handed alpha
Helix 124	124	F	86	103	Right-handed alpha
Helix 125	125	F	116	128	Right-handed alpha
Helix 126	126	G	14	18	Right-handed 310
Helix 127	127	G	21	34	Right-handed alpha
Helix 128	128	J	17	27	Right-handed alpha
Helix 129	129	J	31	39	Right-handed alpha
Helix 130	130	J	43	52	Right-handed alpha
Helix 131	131	J	56	62	Right-handed alpha
Helix 132	132	K	5	10	Right-handed 310
Helix 133	133	K	39	51	Right-handed alpha
Helix 134	134	K	82	110	Right-handed alpha
Helix 135	135	M	58	64	Right-handed alpha
Helix 136	136	M	84	89	Right-handed alpha
Helix 137	137	M	103	117	Right-handed alpha
Helix 138	138	M	127	140	Right-handed alpha
Helix 139	139	M	143	158	Right-handed alpha
Helix 140	140	M	167	183	Right-handed alpha
Helix 141	141	M	188	197	Right-handed alpha
Helix 142	142	M	201	213	Right-handed alpha

There are 56 sheets in PDB entry 4BBR. Click on sheet of interest to get list of strands forming it: AA, AB, AC, AD, AE, AF, AG, AH, AI, AJ, AK, AL, AM, AN, AO, AP, AQ, AR, AS, AT, A, DB, BA, BB, BC, BD, BE, BF, BG, BH, BI, BJ, BK, BL, BM, BN, BO, BP, BQ, BR, BS, BT, BU, CA, CB, CC, C, EA, EB, EC, GA, GB, IA, IB, KA, MA,

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	1418	1419	first strand
Strand 2	A	16	18	anti-parallel
Strand 3	B	1215	1217	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	82	91	first strand
Strand 2	A	235	241	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	151	153	first strand
Strand 2	A	161	163	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	175	177	first strand
Strand 2	A	180	185	anti-parallel
Strand 3	A	198	202	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	250	251	first strand
Strand 2	A	257	260	anti-parallel
Strand 3	M	80	83	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	320	321	first strand
Strand 2	A	313	316	anti-parallel
Strand 3	M	95	97	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	343	345	first strand
Strand 2	B	1128	1130	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	348	355	first strand
Strand 2	B	1104	1106	anti-parallel
Strand 3	A	363	367	first strand
Strand 4	A	455	463	parallel
Strand 5	A	441	445	anti-parallel
Strand 6	A	468	470	anti-parallel
Strand 7	A	486	490	anti-parallel
Strand 8	A	348	355	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	375	379	first strand
Strand 2	A	431	435	anti-parallel
Strand 3	A	402	406	anti-parallel
Strand 4	A	412	414	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	540	542	first strand
Strand 2	A	571	573	anti-parallel

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There are 10 strands in AK sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	565	567	first strand
Strand 2	H	95	103	anti-parallel
Strand 3	H	4	16	first strand
Strand 4	H	54	60	anti-parallel
Strand 5	H	23	30	first strand
Strand 6	H	37	43	first strand
Strand 7	H	112	118	first strand
Strand 8	H	121	127	first strand
Strand 9	H	140	145	first strand
Strand 10	H	54	60	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	A	588	589	first strand
Strand 2	A	606	607	anti-parallel
Strand 3	A	612	614	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	766	767	first strand
Strand 2	A	799	800	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	769	770	first strand
Strand 2	A	773	774	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	849	850	first strand
Strand 2	A	856	857	anti-parallel
Strand 3	A	863	865	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	878	882	first strand
Strand 2	A	953	957	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	A	1281	1287	first strand
Strand 2	A	1303	1309	anti-parallel
Strand 3	A	1116	1119	anti-parallel
Strand 4	A	1328	1329	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	1141	1142	first strand
Strand 2	A	1272	1274	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	1226	1228	first strand
Strand 2	A	1237	1240	anti-parallel
Strand 3	A	1191	1197	anti-parallel
Strand 4	A	1147	1154	anti-parallel
Strand 5	I	42	45	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	A	1290	1292	first strand
Strand 2	A	1298	1300	anti-parallel

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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	D	48	49	first strand
Strand 2	G	3	13	anti-parallel
Strand 3	G	68	79	anti-parallel
Strand 4	G	59	61	anti-parallel
Strand 5	A	1441	1445	anti-parallel
Strand 6	F	132	137	anti-parallel
Strand 7	F	143	147	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	48	49	first strand
Strand 2	G	3	13	anti-parallel
Strand 3	G	68	79	anti-parallel
Strand 4	G	43	49	anti-parallel
Strand 5	G	38	39	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	69	71	first strand
Strand 2	B	85	103	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	109	111	first strand
Strand 2	B	85	103	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	149	150	first strand
Strand 2	B	125	139	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	164	171	first strand
Strand 2	B	125	139	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	203	205	first strand
Strand 2	B	208	211	anti-parallel
Strand 3	B	481	482	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	404	407	first strand
Strand 2	B	214	218	anti-parallel
Strand 3	B	497	499	parallel
Strand 4	B	536	538	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	223	227	first strand
Strand 2	B	234	240	anti-parallel
Strand 3	B	254	259	anti-parallel
Strand 4	B	269	271	anti-parallel
Strand 5	B	280	281	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	544	545	first strand
Strand 2	B	633	641	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	650	651	first strand
Strand 2	B	633	641	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	690	694	first strand
Strand 2	B	633	641	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	703	704	first strand
Strand 2	B	740	741	parallel
Strand 3	B	633	641	anti-parallel
Strand 4	B	650	651	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	703	704	first strand
Strand 2	B	740	741	parallel
Strand 3	B	633	641	anti-parallel
Strand 4	B	690	694	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	564	565	first strand
Strand 2	B	585	590	anti-parallel
Strand 3	B	578	582	anti-parallel
Strand 4	B	623	627	parallel
Strand 5	B	614	618	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	793	796	first strand
Strand 2	B	853	862	anti-parallel
Strand 3	B	962	972	anti-parallel
Strand 4	B	946	956	anti-parallel
Strand 5	L	56	57	anti-parallel
Strand 6	L	30	31	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	793	796	first strand
Strand 2	B	853	862	anti-parallel
Strand 3	B	962	972	anti-parallel
Strand 4	B	946	956	anti-parallel
Strand 5	B	904	906	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	804	805	first strand
Strand 2	B	1042	1043	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	821	827	first strand
Strand 2	B	1085	1094	anti-parallel
Strand 3	B	839	842	first strand
Strand 4	B	987	994	parallel
Strand 5	B	979	982	anti-parallel
Strand 6	B	1010	1012	anti-parallel
Strand 7	B	1069	1070	first strand
Strand 8	B	821	827	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	865	866	first strand
Strand 2	B	870	871	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	873	874	first strand
Strand 2	B	914	917	anti-parallel
Strand 3	B	934	936	anti-parallel
Strand 4	B	882	883	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	910	912	first strand
Strand 2	B	939	940	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	1158	1163	first strand
Strand 2	B	1191	1196	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	7	13	first strand
Strand 2	C	17	23	anti-parallel
Strand 3	C	228	234	anti-parallel
Strand 4	C	173	180	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	119	120	first strand
Strand 2	C	96	104	anti-parallel
Strand 3	C	152	162	anti-parallel
Strand 4	C	43	54	anti-parallel
Strand 5	L	65	68	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	111	114	first strand
Strand 2	C	143	147	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	D	36	38	first strand
Strand 2	D	44	46	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	60	62	first strand
Strand 2	E	78	82	anti-parallel
Strand 3	E	107	112	parallel
Strand 4	E	131	136	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	87	88	first strand
Strand 2	E	115	116	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	152	155	first strand
Strand 2	E	195	202	anti-parallel
Strand 3	E	206	214	anti-parallel
Strand 4	E	177	178	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	G	86	95	first strand
Strand 2	G	142	153	anti-parallel
Strand 3	G	98	103	first strand
Strand 4	G	106	111	first strand
Strand 5	G	156	162	first strand
Strand 6	G	169	170	first strand
Strand 7	G	142	153	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	G	121	122	first strand
Strand 2	G	129	131	anti-parallel
Strand 3	G	136	137	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	I	14	19	first strand
Strand 2	I	24	29	anti-parallel
Strand 3	I	35	37	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	I	70	71	first strand
Strand 2	I	83	87	anti-parallel
Strand 3	I	99	103	anti-parallel
Strand 4	I	109	111	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	K	21	23	first strand
Strand 2	K	30	36	anti-parallel
Strand 3	K	70	77	anti-parallel
Strand 4	K	56	62	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	M	34	37	first strand
Strand 2	M	42	45	anti-parallel
Strand 3	M	51	53	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: 4BBR

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