Analysis of interatomic Contacts of Structural Units in PDB entry:
23SG

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 23SG entry

There are 10 chains in PDB entry 23SG (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
N	GLU 57	HIS 893
X	GLY 2	TRP 195
a	GLY 2	TRP 195
S	ASP 30	GLY 1237
G	GLY 59	HIS 893
d	LYS 4	GLY 513
A	LYS 4	ALA 504
D	LYS 4	ALA 504
m	GLY 3	LEU 87
g	GLY 3	LEU 87

There are216 helices in PDB entry 23SG. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	AA1	N	57	73	Right-handed alpha
Helix 2	AA2	N	74	86	Right-handed alpha
Helix 3	AA3	N	86	131	Right-handed alpha
Helix 4	AA4	N	133	156	Right-handed alpha
Helix 5	AA5	N	160	214	Right-handed alpha
Helix 6	AA6	N	217	234	Right-handed alpha
Helix 7	AA7	N	239	256	Right-handed alpha
Helix 8	AA8	N	260	276	Right-handed alpha
Helix 9	AA9	N	279	312	Right-handed alpha
Helix 10	AB1	N	316	337	Right-handed alpha
Helix 11	AB2	N	341	354	Right-handed alpha
Helix 12	AB3	N	354	371	Right-handed alpha
Helix 13	AB4	N	374	382	Right-handed alpha
Helix 14	AB5	N	385	397	Right-handed alpha
Helix 15	AB6	N	400	415	Right-handed alpha
Helix 16	AB7	N	416	440	Right-handed alpha
Helix 17	AB8	N	448	464	Right-handed alpha
Helix 18	AB9	N	466	474	Right-handed alpha
Helix 19	AC1	N	478	480	Right-handed 310
Helix 20	AC2	N	481	492	Right-handed alpha
Helix 21	AC3	N	495	513	Right-handed alpha
Helix 22	AC4	N	547	565	Right-handed alpha
Helix 23	AC5	N	566	570	Right-handed 310
Helix 24	AC6	N	573	587	Right-handed alpha
Helix 25	AC7	N	608	613	Right-handed alpha
Helix 26	AC8	N	619	639	Right-handed alpha
Helix 27	AC9	N	679	703	Right-handed alpha
Helix 28	AD1	N	734	750	Right-handed alpha
Helix 29	AD2	N	777	805	Right-handed alpha
Helix 30	AD3	N	809	823	Right-handed alpha
Helix 31	AD4	N	824	840	Right-handed alpha
Helix 32	AD5	N	853	865	Right-handed alpha
Helix 33	AD6	N	866	872	Right-handed alpha
Helix 34	AD7	N	873	893	Right-handed alpha
Helix 35	AD8	X	3	13	Right-handed alpha
Helix 36	AD9	X	19	68	Right-handed alpha
Helix 37	AE1	X	84	94	Right-handed alpha
Helix 38	AE2	X	107	123	Right-handed alpha
Helix 39	AE3	X	132	146	Right-handed alpha
Helix 40	AE4	X	180	185	Right-handed alpha
Helix 41	AE5	a	3	10	Right-handed alpha
Helix 42	AE6	a	23	67	Right-handed alpha
Helix 43	AE7	a	83	96	Right-handed alpha
Helix 44	AE8	a	107	123	Right-handed alpha
Helix 45	AE9	a	124	127	Right-handed 310
Helix 46	AF1	a	131	146	Right-handed alpha
Helix 47	AF2	a	177	179	Right-handed 310
Helix 48	AF3	a	180	185	Right-handed alpha
Helix 49	AF4	S	38	52	Right-handed alpha
Helix 50	AF5	S	68	79	Right-handed alpha
Helix 51	AF6	S	90	98	Right-handed alpha
Helix 52	AF7	S	99	105	Right-handed alpha
Helix 53	AF8	S	107	116	Right-handed alpha
Helix 54	AF9	S	119	141	Right-handed alpha
Helix 55	AG1	S	195	210	Right-handed alpha
Helix 56	AG2	S	218	230	Right-handed alpha
Helix 57	AG3	S	257	264	Right-handed alpha
Helix 58	AG4	S	284	295	Right-handed alpha
Helix 59	AG5	S	298	309	Right-handed alpha
Helix 60	AG6	S	324	332	Right-handed alpha
Helix 61	AG7	S	350	354	Right-handed 310
Helix 62	AG8	S	361	368	Right-handed alpha
Helix 63	AG9	S	369	392	Right-handed alpha
Helix 64	AH1	S	394	410	Right-handed alpha
Helix 65	AH2	S	414	420	Right-handed alpha
Helix 66	AH3	S	422	430	Right-handed alpha
Helix 67	AH4	S	433	443	Right-handed alpha
Helix 68	AH5	S	451	463	Right-handed alpha
Helix 69	AH6	S	473	494	Right-handed alpha
Helix 70	AH7	S	495	497	Right-handed 310
Helix 71	AH8	S	500	506	Right-handed alpha
Helix 72	AH9	S	507	513	Right-handed alpha
Helix 73	AI1	S	515	531	Right-handed alpha
Helix 74	AI2	S	531	545	Right-handed alpha
Helix 75	AI3	S	545	553	Right-handed alpha
Helix 76	AI4	S	565	594	Right-handed alpha
Helix 77	AI5	S	598	605	Right-handed alpha
Helix 78	AI6	S	605	633	Right-handed alpha
Helix 79	AI7	S	641	643	Right-handed 310
Helix 80	AI8	S	644	655	Right-handed alpha
Helix 81	AI9	S	655	667	Right-handed alpha
Helix 82	AJ1	S	687	696	Right-handed alpha
Helix 83	AJ2	S	700	716	Right-handed alpha
Helix 84	AJ3	S	720	738	Right-handed alpha
Helix 85	AJ4	S	745	749	Right-handed 310
Helix 86	AJ5	S	757	766	Right-handed alpha
Helix 87	AJ6	S	769	777	Right-handed alpha
Helix 88	AJ7	S	813	818	Right-handed 310
Helix 89	AJ8	S	821	842	Right-handed alpha
Helix 90	AJ9	S	846	859	Right-handed alpha
Helix 91	AK1	S	863	879	Right-handed alpha
Helix 92	AK2	S	888	893	Right-handed alpha
Helix 93	AK3	S	900	908	Right-handed alpha
Helix 94	AK4	S	908	933	Right-handed alpha
Helix 95	AK5	S	934	940	Right-handed alpha
Helix 96	AK6	S	940	945	Right-handed alpha
Helix 97	AK7	S	946	958	Right-handed alpha
Helix 98	AK8	S	960	966	Right-handed 310
Helix 99	AK9	S	967	978	Right-handed alpha
Helix 100	AL1	S	983	992	Right-handed alpha
Helix 101	AL2	S	992	1027	Right-handed alpha
Helix 102	AL3	S	1029	1037	Right-handed alpha
Helix 103	AL4	S	1042	1056	Right-handed alpha
Helix 104	AL5	S	1062	1087	Right-handed alpha
Helix 105	AL6	S	1096	1119	Right-handed alpha
Helix 106	AL7	S	1126	1151	Right-handed alpha
Helix 107	AL8	S	1156	1169	Right-handed alpha
Helix 108	AL9	S	1178	1182	Right-handed 310
Helix 109	AM1	S	1185	1209	Right-handed alpha
Helix 110	AM2	S	1212	1220	Right-handed alpha
Helix 111	AM3	S	1222	1236	Right-handed alpha
Helix 112	AM4	G	60	73	Right-handed alpha
Helix 113	AM5	G	74	86	Right-handed alpha
Helix 114	AM6	G	87	131	Right-handed alpha
Helix 115	AM7	G	133	156	Right-handed alpha
Helix 116	AM8	G	157	159	Right-handed 310
Helix 117	AM9	G	160	216	Right-handed alpha
Helix 118	AN1	G	217	235	Right-handed alpha
Helix 119	AN2	G	239	256	Right-handed alpha
Helix 120	AN3	G	260	276	Right-handed alpha
Helix 121	AN4	G	277	279	Right-handed 310
Helix 122	AN5	G	280	312	Right-handed alpha
Helix 123	AN6	G	316	337	Right-handed alpha
Helix 124	AN7	G	341	353	Right-handed alpha
Helix 125	AN8	G	354	371	Right-handed alpha
Helix 126	AN9	G	374	382	Right-handed alpha
Helix 127	AO1	G	385	397	Right-handed alpha
Helix 128	AO2	G	400	415	Right-handed alpha
Helix 129	AO3	G	416	441	Right-handed alpha
Helix 130	AO4	G	448	464	Right-handed alpha
Helix 131	AO5	G	466	474	Right-handed alpha
Helix 132	AO6	G	481	492	Right-handed alpha
Helix 133	AO7	G	495	514	Right-handed alpha
Helix 134	AO8	G	545	565	Right-handed alpha
Helix 135	AO9	G	566	570	Right-handed 310
Helix 136	AP1	G	573	587	Right-handed alpha
Helix 137	AP2	G	608	614	Right-handed alpha
Helix 138	AP3	G	619	639	Right-handed alpha
Helix 139	AP4	G	640	644	Right-handed 310
Helix 140	AP5	G	678	703	Right-handed alpha
Helix 141	AP6	G	734	750	Right-handed alpha
Helix 142	AP7	G	777	805	Right-handed alpha
Helix 143	AP8	G	809	821	Right-handed alpha
Helix 144	AP9	G	824	841	Right-handed alpha
Helix 145	AQ1	G	852	865	Right-handed alpha
Helix 146	AQ2	G	866	872	Right-handed alpha
Helix 147	AQ3	G	873	893	Right-handed alpha
Helix 148	AQ4	d	6	15	Right-handed alpha
Helix 149	AQ5	d	16	30	Right-handed alpha
Helix 150	AQ6	d	54	72	Right-handed alpha
Helix 151	AQ7	d	84	95	Right-handed alpha
Helix 152	AQ8	d	99	113	Right-handed alpha
Helix 153	AQ9	d	114	116	Right-handed 310
Helix 154	AR1	d	120	135	Right-handed alpha
Helix 155	AR2	d	176	180	Right-handed 310
Helix 156	AR3	d	181	189	Right-handed alpha
Helix 157	AR4	d	260	265	Right-handed alpha
Helix 158	AR5	d	265	287	Right-handed alpha
Helix 159	AR6	d	296	298	Right-handed 310
Helix 160	AR7	d	300	306	Right-handed alpha
Helix 161	AR8	d	334	357	Right-handed alpha
Helix 162	AR9	d	371	386	Right-handed alpha
Helix 163	AS1	d	386	409	Right-handed alpha
Helix 164	AS2	d	410	416	Right-handed 310
Helix 165	AS3	d	429	431	Right-handed 310
Helix 166	AS4	d	432	449	Right-handed alpha
Helix 167	AS5	d	451	459	Right-handed alpha
Helix 168	AS6	d	463	476	Right-handed alpha
Helix 169	AS7	d	485	513	Right-handed alpha
Helix 170	AS8	A	6	15	Right-handed alpha
Helix 171	AS9	A	16	30	Right-handed alpha
Helix 172	AT1	A	54	70	Right-handed alpha
Helix 173	AT2	A	84	94	Right-handed alpha
Helix 174	AT3	A	99	117	Right-handed alpha
Helix 175	AT4	A	119	135	Right-handed alpha
Helix 176	AT5	A	152	154	Right-handed 310
Helix 177	AT6	A	178	180	Right-handed 310
Helix 178	AT7	A	181	188	Right-handed alpha
Helix 179	AT8	A	262	264	Right-handed 310
Helix 180	AT9	A	265	288	Right-handed alpha
Helix 181	AU1	A	296	298	Right-handed 310
Helix 182	AU2	A	300	306	Right-handed alpha
Helix 183	AU3	A	335	356	Right-handed alpha
Helix 184	AU4	A	371	385	Right-handed alpha
Helix 185	AU5	A	386	396	Right-handed alpha
Helix 186	AU6	A	396	409	Right-handed alpha
Helix 187	AU7	A	410	416	Right-handed 310
Helix 188	AU8	A	429	431	Right-handed 310
Helix 189	AU9	A	432	459	Right-handed alpha
Helix 190	AV1	A	463	476	Right-handed alpha
Helix 191	AV2	A	485	503	Right-handed alpha
Helix 192	AV3	D	6	14	Right-handed alpha
Helix 193	AV4	D	16	30	Right-handed alpha
Helix 194	AV5	D	54	72	Right-handed alpha
Helix 195	AV6	D	84	95	Right-handed alpha
Helix 196	AV7	D	99	114	Right-handed alpha
Helix 197	AV8	D	115	117	Right-handed 310
Helix 198	AV9	D	120	134	Right-handed alpha
Helix 199	AW1	D	178	180	Right-handed 310
Helix 200	AW2	D	181	188	Right-handed alpha
Helix 201	AW3	D	265	287	Right-handed alpha
Helix 202	AW4	D	300	306	Right-handed alpha
Helix 203	AW5	D	336	357	Right-handed alpha
Helix 204	AW6	D	371	386	Right-handed alpha
Helix 205	AW7	D	386	409	Right-handed alpha
Helix 206	AW8	D	410	416	Right-handed 310
Helix 207	AW9	D	429	431	Right-handed 310
Helix 208	AX1	D	432	459	Right-handed alpha
Helix 209	AX2	D	463	476	Right-handed alpha
Helix 210	AX3	D	485	503	Right-handed alpha
Helix 211	AX4	m	4	10	Right-handed 310
Helix 212	AX5	m	11	16	Right-handed alpha
Helix 213	AX6	m	70	76	Right-handed alpha
Helix 214	AX7	g	4	10	Right-handed 310
Helix 215	AX8	g	11	17	Right-handed alpha
Helix 216	AX9	g	70	77	Right-handed alpha

There are 22 sheets in PDB entry 23SG. Click on sheet of interest to get list of strands forming it: AA1, AA2, AA3, AA4, AA5, AA6, AA7, AA8, AA9, AB1, AB2, AB3, AB4, AB5, AB6, AB7, AB8, AB9, AC1, AC2, AC3, AC4,

There are 6 strands in AA1 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	N	590	593	first strand
Strand 2	N	598	602	anti-parallel
Strand 3	N	644	654	parallel
Strand 4	N	657	667	anti-parallel
Strand 5	N	672	678	anti-parallel
Strand 6	S	214	215	parallel

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There are 2 strands in AA2 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	N	708	713	first strand
Strand 2	N	720	725	anti-parallel

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There are 4 strands in AA3 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	S	248	249	first strand
Strand 2	S	279	283	parallel
Strand 3	S	316	320	anti-parallel
Strand 4	S	345	347	parallel

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There are 2 strands in AA4 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	S	265	272	first strand
Strand 2	S	356	360	anti-parallel

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There are 2 strands in AA5 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	S	805	807	first strand
Strand 2	S	810	812	anti-parallel

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There are 2 strands in AA6 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	G	589	593	first strand
Strand 2	G	598	602	anti-parallel

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There are 3 strands in AA7 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	G	646	653	first strand
Strand 2	G	659	666	anti-parallel
Strand 3	G	672	676	anti-parallel

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There are 2 strands in AA8 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	G	708	713	first strand
Strand 2	G	720	725	anti-parallel

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There are 2 strands in AA9 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	d	79	81	first strand
Strand 2	d	425	427	anti-parallel

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There are 3 strands in AB1 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	d	148	151	first strand
Strand 2	d	136	141	anti-parallel
Strand 3	d	244	248	anti-parallel

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There are 5 strands in AB2 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	d	156	160	first strand
Strand 2	d	166	175	anti-parallel
Strand 3	d	198	210	anti-parallel
Strand 4	d	216	226	anti-parallel
Strand 5	d	229	230	anti-parallel

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There are 5 strands in AB3 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	d	156	160	first strand
Strand 2	d	166	175	anti-parallel
Strand 3	d	198	210	anti-parallel
Strand 4	d	216	226	anti-parallel
Strand 5	d	235	238	anti-parallel

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There are 3 strands in AB4 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	d	328	330	first strand
Strand 2	d	291	294	anti-parallel
Strand 3	D	313	315	parallel

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There are 3 strands in AB5 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	d	313	315	first strand
Strand 2	A	291	294	parallel
Strand 3	A	328	330	anti-parallel

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There are 2 strands in AB6 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	79	81	first strand
Strand 2	A	425	427	anti-parallel

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There are 3 strands in AB7 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	148	151	first strand
Strand 2	A	136	141	anti-parallel
Strand 3	A	244	248	anti-parallel

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There are 5 strands in AB8 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	156	160	first strand
Strand 2	A	166	176	anti-parallel
Strand 3	A	197	210	anti-parallel
Strand 4	A	216	225	anti-parallel
Strand 5	A	235	238	anti-parallel

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There are 2 strands in AB9 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	79	81	first strand
Strand 2	D	425	427	anti-parallel

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There are 3 strands in AC1 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	148	151	first strand
Strand 2	D	136	141	anti-parallel
Strand 3	D	244	248	anti-parallel

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There are 5 strands in AC2 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	156	160	first strand
Strand 2	D	166	176	anti-parallel
Strand 3	D	197	210	anti-parallel
Strand 4	D	216	226	anti-parallel
Strand 5	D	229	230	anti-parallel

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There are 5 strands in AC3 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	156	160	first strand
Strand 2	D	166	176	anti-parallel
Strand 3	D	197	210	anti-parallel
Strand 4	D	216	226	anti-parallel
Strand 5	D	235	238	anti-parallel

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There are 2 strands in AC4 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	291	293	first strand
Strand 2	D	328	330	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: 23SG

Analysis of interatomic Contacts of Structural Units in PDB entry:
23SG