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

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 4IFD entry

There are 5 chains in PDB entry 4IFD (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	ALA 2	ASN 301
B	MET 1	ASN 242
C	LEU 7	ILE 394
D	MET 1	VAL 223
E	GLY -1	VAL 192

There are 91 helices in PDB entry 4IFD. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	8	21	Right-handed alpha
Helix 2	2	A	84	88	Right-handed 310
Helix 3	3	A	98	112	Right-handed alpha
Helix 4	4	A	119	122	Right-handed 310
Helix 5	5	A	146	162	Right-handed alpha
Helix 6	6	A	205	211	Right-handed alpha
Helix 7	7	A	224	229	Right-handed alpha
Helix 8	8	A	258	300	Right-handed alpha
Helix 9	9	B	94	109	Right-handed alpha
Helix 10	10	B	113	117	Right-handed 310
Helix 11	11	B	134	150	Right-handed alpha
Helix 12	12	B	175	180	Right-handed alpha
Helix 13	13	B	207	241	Right-handed alpha
Helix 14	14	C	18	26	Right-handed alpha
Helix 15	15	C	26	36	Right-handed alpha
Helix 16	16	C	123	125	Right-handed 310
Helix 17	17	C	145	162	Right-handed alpha
Helix 18	18	C	226	239	Right-handed alpha
Helix 19	19	C	303	307	Right-handed 310
Helix 20	20	C	335	343	Right-handed alpha
Helix 21	21	C	370	392	Right-handed alpha
Helix 22	22	D	60	78	Right-handed alpha
Helix 23	23	D	79	83	Right-handed 310
Helix 24	24	D	105	124	Right-handed alpha
Helix 25	25	D	150	156	Right-handed alpha
Helix 26	26	D	187	218	Right-handed alpha
Helix 27	27	E	4	17	Right-handed alpha
Helix 28	28	E	89	103	Right-handed alpha
Helix 29	29	E	110	115	Right-handed 310
Helix 30	30	E	137	150	Right-handed alpha
Helix 31	31	E	202	209	Right-handed alpha
Helix 32	32	E	240	263	Right-handed alpha
Helix 33	33	F	106	122	Right-handed alpha
Helix 34	34	F	126	130	Right-handed 310
Helix 35	35	F	163	167	Right-handed 310
Helix 36	36	F	168	184	Right-handed alpha
Helix 37	37	F	205	208	Right-handed 310
Helix 38	38	F	222	248	Right-handed alpha
Helix 39	39	G	159	169	Right-handed alpha
Helix 40	40	G	173	180	Right-handed alpha
Helix 41	41	G	200	218	Right-handed alpha
Helix 42	42	G	222	236	Right-handed alpha
Helix 43	43	H	139	141	Right-handed 310
Helix 44	44	H	145	149	Right-handed 310
Helix 45	45	H	158	162	Right-handed 310
Helix 46	46	H	203	207	Right-handed 310
Helix 47	47	H	237	243	Right-handed alpha
Helix 48	48	H	275	279	Right-handed 310
Helix 49	49	H	290	310	Right-handed alpha
Helix 50	50	H	315	326	Right-handed alpha
Helix 51	51	H	327	329	Right-handed 310
Helix 52	52	H	331	336	Right-handed 310
Helix 53	53	H	337	357	Right-handed alpha
Helix 54	54	I	208	210	Right-handed 310
Helix 55	55	I	219	223	Right-handed 310
Helix 56	56	J	54	58	Right-handed 310
Helix 57	57	J	91	98	Right-handed alpha
Helix 58	58	J	115	125	Right-handed alpha
Helix 59	59	J	125	138	Right-handed alpha
Helix 60	60	J	165	185	Right-handed alpha
Helix 61	61	J	186	188	Right-handed 310
Helix 62	62	J	198	207	Right-handed alpha
Helix 63	63	J	217	223	Right-handed alpha
Helix 64	64	J	227	232	Right-handed alpha
Helix 65	65	J	233	235	Right-handed 310
Helix 66	66	J	260	270	Right-handed alpha
Helix 67	67	J	303	308	Right-handed alpha
Helix 68	68	J	322	326	Right-handed 310
Helix 69	69	J	366	384	Right-handed alpha
Helix 70	70	J	476	488	Right-handed alpha
Helix 71	71	J	496	501	Right-handed alpha
Helix 72	72	J	506	510	Right-handed 310
Helix 73	73	J	518	525	Right-handed alpha
Helix 74	74	J	526	531	Right-handed 310
Helix 75	75	J	573	576	Right-handed 310
Helix 76	76	J	581	591	Right-handed alpha
Helix 77	77	J	605	610	Right-handed alpha
Helix 78	78	J	653	663	Right-handed alpha
Helix 79	79	J	668	692	Right-handed alpha
Helix 80	80	J	721	746	Right-handed alpha
Helix 81	81	J	759	773	Right-handed alpha
Helix 82	82	J	782	792	Right-handed alpha
Helix 83	83	J	799	810	Right-handed alpha
Helix 84	84	J	825	830	Right-handed 310
Helix 85	85	J	848	862	Right-handed alpha
Helix 86	86	J	868	872	Right-handed 310
Helix 87	87	J	873	907	Right-handed alpha
Helix 88	88	J	941	945	Right-handed alpha
Helix 89	89	K	538	554	Right-handed alpha
Helix 90	90	K	595	612	Right-handed alpha
Helix 91	91	K	613	615	Right-handed 310

There are 44 sheets in PDB entry 4IFD. 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 5 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	36	40	first strand
Strand 2	A	46	51	anti-parallel
Strand 3	A	54	65	anti-parallel
Strand 4	A	130	142	anti-parallel
Strand 5	A	76	80	parallel

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There are 5 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	36	40	first strand
Strand 2	A	46	51	anti-parallel
Strand 3	A	54	65	anti-parallel
Strand 4	A	130	142	anti-parallel
Strand 5	A	124	126	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	163	164	first strand
Strand 2	A	185	186	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	167	170	first strand
Strand 2	A	173	176	anti-parallel

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There are 8 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	218	221	first strand
Strand 2	A	194	201	anti-parallel
Strand 3	A	233	240	anti-parallel
Strand 4	A	244	250	anti-parallel
Strand 5	B	195	201	anti-parallel
Strand 6	B	183	190	anti-parallel
Strand 7	B	158	166	anti-parallel
Strand 8	B	169	172	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	256	257	first strand
Strand 2	B	195	201	anti-parallel
Strand 3	A	244	250	anti-parallel
Strand 4	B	205	206	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	25	26	first strand
Strand 2	B	38	44	anti-parallel
Strand 3	B	47	57	anti-parallel
Strand 4	B	121	130	anti-parallel
Strand 5	B	71	78	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	10	12	first strand
Strand 2	K	617	619	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	48	50	first strand
Strand 2	K	582	585	anti-parallel
Strand 3	K	591	594	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	53	56	first strand
Strand 2	C	76	82	anti-parallel
Strand 3	C	85	98	anti-parallel
Strand 4	C	208	220	anti-parallel
Strand 5	C	171	172	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	C	131	136	first strand
Strand 2	C	208	220	parallel
Strand 3	C	85	98	anti-parallel
Strand 4	F	16	17	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	127	128	first strand
Strand 2	C	165	166	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	184	188	first strand
Strand 2	C	175	180	anti-parallel
Strand 3	C	242	249	parallel
Strand 4	C	275	283	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	257	260	first strand
Strand 2	C	265	268	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	328	332	first strand
Strand 2	C	293	301	anti-parallel
Strand 3	C	345	351	anti-parallel
Strand 4	C	357	364	anti-parallel
Strand 5	D	173	186	anti-parallel
Strand 6	D	157	168	anti-parallel
Strand 7	D	130	139	anti-parallel
Strand 8	D	145	147	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	4	7	first strand
Strand 2	D	15	21	anti-parallel
Strand 3	D	24	34	anti-parallel
Strand 4	D	86	96	anti-parallel
Strand 5	D	46	53	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	76	82	first strand
Strand 2	E	120	132	parallel
Strand 3	E	57	68	anti-parallel
Strand 4	E	46	51	anti-parallel
Strand 5	E	34	38	anti-parallel
Strand 6	H	7	11	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	E	153	157	first strand
Strand 2	E	172	179	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	196	199	first strand
Strand 2	E	186	193	anti-parallel
Strand 3	E	211	218	anti-parallel
Strand 4	E	221	228	anti-parallel
Strand 5	F	209	215	anti-parallel
Strand 6	F	199	204	anti-parallel
Strand 7	F	192	196	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	45	50	first strand
Strand 2	F	58	66	anti-parallel
Strand 3	F	69	82	anti-parallel
Strand 4	F	133	146	anti-parallel
Strand 5	F	92	99	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	G	4	5	first strand
Strand 2	G	40	44	anti-parallel
Strand 3	G	53	59	anti-parallel
Strand 4	G	19	21	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	G	25	27	first strand
Strand 2	G	34	36	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	G	148	149	first strand
Strand 2	G	118	125	anti-parallel
Strand 3	G	133	135	anti-parallel
Strand 4	G	95	98	parallel
Strand 5	G	83	87	anti-parallel
Strand 6	G	71	79	anti-parallel
Strand 7	G	118	125	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	G	154	157	first strand
Strand 2	G	193	197	anti-parallel
Strand 3	G	185	189	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	H	54	55	first strand
Strand 2	H	86	91	anti-parallel
Strand 3	H	94	99	anti-parallel
Strand 4	H	68	69	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	60	62	first strand
Strand 2	H	79	82	anti-parallel
Strand 3	H	73	76	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	H	192	193	first strand
Strand 2	H	168	176	anti-parallel
Strand 3	H	182	185	anti-parallel
Strand 4	H	134	137	parallel
Strand 5	H	123	127	anti-parallel
Strand 6	H	111	120	anti-parallel
Strand 7	H	168	176	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	H	197	201	first strand
Strand 2	H	230	235	anti-parallel
Strand 3	H	221	225	anti-parallel
Strand 4	H	214	217	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	I	10	11	first strand
Strand 2	I	62	68	anti-parallel
Strand 3	I	103	111	anti-parallel
Strand 4	I	29	37	parallel
Strand 5	I	21	26	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	I	16	19	first strand
Strand 2	I	51	58	anti-parallel
Strand 3	I	41	48	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	I	188	190	first strand
Strand 2	I	150	159	anti-parallel
Strand 3	I	138	146	anti-parallel
Strand 4	I	229	236	anti-parallel
Strand 5	I	253	258	anti-parallel
Strand 6	I	266	269	anti-parallel
Strand 7	I	274	276	anti-parallel
Strand 8	I	283	285	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	I	188	190	first strand
Strand 2	I	150	159	anti-parallel
Strand 3	I	202	206	anti-parallel
Strand 4	I	242	246	parallel
Strand 5	I	229	236	anti-parallel
Strand 6	I	253	258	anti-parallel
Strand 7	I	266	269	anti-parallel
Strand 8	I	274	276	anti-parallel
Strand 9	I	283	285	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	J	11	12	first strand
Strand 2	J	18	28	anti-parallel
Strand 3	J	31	41	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	J	78	79	first strand
Strand 2	J	84	90	anti-parallel
Strand 3	J	110	114	parallel
Strand 4	J	144	148	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	J	78	79	first strand
Strand 2	J	84	90	anti-parallel
Strand 3	J	190	195	anti-parallel
Strand 4	J	214	216	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	J	299	302	first strand
Strand 2	J	287	290	anti-parallel
Strand 3	J	274	280	anti-parallel
Strand 4	J	315	320	anti-parallel
Strand 5	J	390	397	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	J	402	407	first strand
Strand 2	J	420	426	anti-parallel
Strand 3	J	434	438	anti-parallel
Strand 4	J	464	473	parallel
Strand 5	J	447	455	anti-parallel
Strand 6	J	402	407	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	J	532	533	first strand
Strand 2	J	636	652	parallel
Strand 3	J	620	630	anti-parallel
Strand 4	J	564	571	anti-parallel
Strand 5	J	552	558	anti-parallel
Strand 6	J	539	542	anti-parallel
Strand 7	J	636	652	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	J	594	595	first strand
Strand 2	J	600	601	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	J	701	705	first strand
Strand 2	J	712	717	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	J	751	754	first strand
Strand 2	J	817	820	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	J	935	940	first strand
Strand 2	J	925	930	anti-parallel
Strand 3	J	913	921	anti-parallel
Strand 4	J	978	982	anti-parallel
Strand 5	J	999	1000	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	J	952	954	first strand
Strand 2	J	959	962	anti-parallel
Strand 3	J	971	973	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	J	985	987	first strand
Strand 2	J	994	996	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: 4IFD

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