Analysis of interatomic Contacts of Structural Units in PDB entry:
4X1K

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 4X1K entry

There are 5 chains in PDB entry 4X1K (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	ARG 2	VAL 437
B	GLU 3	ALA 440
C	MET 1	ASP 438
D	ARG 2	ASP 441
E	ILE 9	GLU 141

There are 76 helices in PDB entry 4X1K. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	AA1	A	11	28	Right-handed alpha
Helix 2	AA2	A	47	51	Right-handed 310
Helix 3	AA3	A	72	77	Right-handed alpha
Helix 4	AA4	A	81	85	Right-handed 310
Helix 5	AA5	A	102	109	Right-handed alpha
Helix 6	AA6	A	109	127	Right-handed alpha
Helix 7	AA7	A	147	161	Right-handed alpha
Helix 8	AA8	A	182	195	Right-handed alpha
Helix 9	AA9	A	206	216	Right-handed alpha
Helix 10	AB1	A	223	244	Right-handed alpha
Helix 11	AB2	A	252	259	Right-handed alpha
Helix 12	AB3	A	287	296	Right-handed alpha
Helix 13	AB4	A	297	301	Right-handed 310
Helix 14	AB5	A	324	339	Right-handed alpha
Helix 15	AB6	A	381	383	Right-handed 310
Helix 16	AB7	A	384	401	Right-handed alpha
Helix 17	AB8	A	404	410	Right-handed alpha
Helix 18	AB9	A	415	436	Right-handed alpha
Helix 19	AC1	B	10	28	Right-handed alpha
Helix 20	AC2	B	41	48	Right-handed alpha
Helix 21	AC3	B	72	81	Right-handed alpha
Helix 22	AC4	B	83	87	Right-handed 310
Helix 23	AC5	B	88	90	Right-handed 310
Helix 24	AC6	B	102	108	Right-handed alpha
Helix 25	AC7	B	108	128	Right-handed alpha
Helix 26	AC8	B	144	161	Right-handed alpha
Helix 27	AC9	B	182	198	Right-handed alpha
Helix 28	AD1	B	206	216	Right-handed alpha
Helix 29	AD2	B	223	239	Right-handed alpha
Helix 30	AD3	B	239	244	Right-handed alpha
Helix 31	AD4	B	251	260	Right-handed alpha
Helix 32	AD5	B	287	296	Right-handed alpha
Helix 33	AD6	B	297	301	Right-handed 310
Helix 34	AD7	B	324	339	Right-handed alpha
Helix 35	AD8	B	340	343	Right-handed 310
Helix 36	AD9	B	384	401	Right-handed alpha
Helix 37	AE1	B	405	410	Right-handed alpha
Helix 38	AE2	B	414	437	Right-handed alpha
Helix 39	AE3	C	11	28	Right-handed alpha
Helix 40	AE4	C	47	51	Right-handed 310
Helix 41	AE5	C	72	80	Right-handed alpha
Helix 42	AE6	C	102	108	Right-handed alpha
Helix 43	AE7	C	111	127	Right-handed alpha
Helix 44	AE8	C	143	161	Right-handed alpha
Helix 45	AE9	C	182	195	Right-handed alpha
Helix 46	AF1	C	206	216	Right-handed alpha
Helix 47	AF2	C	223	244	Right-handed alpha
Helix 48	AF3	C	253	260	Right-handed alpha
Helix 49	AF4	C	287	295	Right-handed alpha
Helix 50	AF5	C	296	301	Right-handed 310
Helix 51	AF6	C	324	338	Right-handed alpha
Helix 52	AF7	C	381	383	Right-handed 310
Helix 53	AF8	C	384	401	Right-handed alpha
Helix 54	AF9	C	404	410	Right-handed alpha
Helix 55	AG1	C	416	436	Right-handed alpha
Helix 56	AG2	D	10	27	Right-handed alpha
Helix 57	AG3	D	41	48	Right-handed alpha
Helix 58	AG4	D	71	80	Right-handed alpha
Helix 59	AG5	D	82	86	Right-handed 310
Helix 60	AG6	D	88	90	Right-handed 310
Helix 61	AG7	D	102	108	Right-handed alpha
Helix 62	AG8	D	109	128	Right-handed alpha
Helix 63	AG9	D	146	161	Right-handed alpha
Helix 64	AH1	D	182	198	Right-handed alpha
Helix 65	AH2	D	206	216	Right-handed alpha
Helix 66	AH3	D	223	244	Right-handed alpha
Helix 67	AH4	D	251	260	Right-handed alpha
Helix 68	AH5	D	287	296	Right-handed alpha
Helix 69	AH6	D	297	301	Right-handed 310
Helix 70	AH7	D	306	310	Right-handed 310
Helix 71	AH8	D	324	339	Right-handed alpha
Helix 72	AH9	D	340	343	Right-handed 310
Helix 73	AI1	D	384	401	Right-handed alpha
Helix 74	AI2	D	405	410	Right-handed alpha
Helix 75	AI3	D	415	438	Right-handed alpha
Helix 76	AI4	E	46	141	Right-handed alpha

There are 12 sheets in PDB entry 4X1K. Click on sheet of interest to get list of strands forming it: AA1, AA2, AA3, AA4, AA5, AA6, AA7, AA8, AA9, AB1, AB2, AB3,

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	A	92	94	first strand
Strand 2	A	65	69	parallel
Strand 3	A	5	9	parallel
Strand 4	A	134	139	parallel
Strand 5	A	165	172	parallel
Strand 6	A	200	205	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	A	53	55	first strand
Strand 2	A	61	63	anti-parallel

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There are 2 strands in AA3 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	269	270	first strand
Strand 2	A	378	379	anti-parallel

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There are 5 strands in AA4 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	373	375	first strand
Strand 2	A	318	321	anti-parallel
Strand 3	A	349	356	parallel
Strand 4	E	17	25	anti-parallel
Strand 5	E	12	14	anti-parallel

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There are 10 strands in AA5 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	92	94	first strand
Strand 2	B	65	69	parallel
Strand 3	B	4	9	parallel
Strand 4	B	134	140	parallel
Strand 5	B	165	172	parallel
Strand 6	B	200	205	parallel
Strand 7	B	267	271	parallel
Strand 8	B	374	381	anti-parallel
Strand 9	B	312	320	anti-parallel
Strand 10	B	351	354	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	B	53	55	first strand
Strand 2	B	61	63	anti-parallel

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There are 5 strands in AA7 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	92	94	first strand
Strand 2	C	65	69	parallel
Strand 3	C	3	9	parallel
Strand 4	C	132	140	parallel
Strand 5	C	165	166	parallel

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There are 6 strands in AA8 sheet. Click on strand of interest for CSU analysis.

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	92	94	first strand
Strand 2	C	65	69	parallel
Strand 3	C	3	9	parallel
Strand 4	C	132	140	parallel
Strand 5	C	169	172	parallel
Strand 6	C	202	205	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	C	53	55	first strand
Strand 2	C	61	63	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	C	352	355	first strand
Strand 2	C	316	319	parallel
Strand 3	C	377	378	anti-parallel

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There are 10 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	92	94	first strand
Strand 2	D	65	69	parallel
Strand 3	D	3	9	parallel
Strand 4	D	132	140	parallel
Strand 5	D	165	172	parallel
Strand 6	D	200	205	parallel
Strand 7	D	267	270	parallel
Strand 8	D	375	381	anti-parallel
Strand 9	D	312	320	anti-parallel
Strand 10	D	351	356	parallel

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There are 2 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	53	55	first strand
Strand 2	D	61	63	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: 4X1K

Analysis of interatomic Contacts of Structural Units in PDB entry:
4X1K