Analysis of interatomic Contacts of Structural Units in PDB entry:
1K9A

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 1K9A entry

There are 6 chains in PDB entry 1K9A (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	ALA 6	LEU 450
B	ILE 4	LEU 450
C	ALA 6	LEU 450
D	ALA 6	LEU 450
E	ALA 6	LEU 450
F	ALA 6	LEU 450

There are 85 helices in PDB entry 1K9A. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	88	96	Right-handed alpha
Helix 2	2	A	148	159	Right-handed alpha
Helix 3	3	A	179	186	Right-handed alpha
Helix 4	4	A	191	193	Right-handed 310
Helix 5	5	A	230	242	Right-handed alpha
Helix 6	6	A	273	282	Right-handed alpha
Helix 7	7	A	287	308	Right-handed alpha
Helix 8	8	A	316	318	Right-handed 310
Helix 9	9	A	354	360	Right-handed alpha
Helix 10	10	A	364	381	Right-handed alpha
Helix 11	11	A	394	401	Right-handed alpha
Helix 12	12	A	412	423	Right-handed alpha
Helix 13	13	A	426	430	Right-handed 310
Helix 14	14	A	432	446	Right-handed alpha
Helix 15	15	B	88	96	Right-handed alpha
Helix 16	16	B	148	159	Right-handed alpha
Helix 17	17	B	179	186	Right-handed alpha
Helix 18	18	B	191	193	Right-handed 310
Helix 19	19	B	230	241	Right-handed alpha
Helix 20	20	B	273	282	Right-handed alpha
Helix 21	21	B	287	308	Right-handed alpha
Helix 22	22	B	316	318	Right-handed 310
Helix 23	23	B	354	359	Right-handed alpha
Helix 24	24	B	364	381	Right-handed alpha
Helix 25	25	B	394	400	Right-handed alpha
Helix 26	26	B	412	423	Right-handed alpha
Helix 27	27	B	426	430	Right-handed 310
Helix 28	28	B	432	447	Right-handed alpha
Helix 29	29	C	73	75	Right-handed 310
Helix 30	30	C	88	95	Right-handed alpha
Helix 31	31	C	148	159	Right-handed alpha
Helix 32	32	C	179	186	Right-handed alpha
Helix 33	33	C	191	193	Right-handed 310
Helix 34	34	C	229	241	Right-handed alpha
Helix 35	35	C	274	282	Right-handed alpha
Helix 36	36	C	287	308	Right-handed alpha
Helix 37	37	C	316	318	Right-handed 310
Helix 38	38	C	354	361	Right-handed alpha
Helix 39	39	C	364	382	Right-handed alpha
Helix 40	40	C	391	400	Right-handed alpha
Helix 41	41	C	412	423	Right-handed alpha
Helix 42	42	C	426	430	Right-handed 310
Helix 43	43	C	432	446	Right-handed alpha
Helix 44	44	D	73	75	Right-handed 310
Helix 45	45	D	89	94	Right-handed alpha
Helix 46	46	D	148	159	Right-handed alpha
Helix 47	47	D	179	186	Right-handed alpha
Helix 48	48	D	191	193	Right-handed 310
Helix 49	49	D	229	241	Right-handed alpha
Helix 50	50	D	273	286	Right-handed alpha
Helix 51	51	D	287	308	Right-handed alpha
Helix 52	52	D	316	318	Right-handed 310
Helix 53	53	D	354	361	Right-handed alpha
Helix 54	54	D	364	381	Right-handed alpha
Helix 55	55	D	391	400	Right-handed alpha
Helix 56	56	D	412	423	Right-handed alpha
Helix 57	57	D	426	430	Right-handed 310
Helix 58	58	D	432	446	Right-handed alpha
Helix 59	59	E	88	96	Right-handed alpha
Helix 60	60	E	148	159	Right-handed alpha
Helix 61	61	E	179	186	Right-handed alpha
Helix 62	62	E	191	193	Right-handed 310
Helix 63	63	E	230	241	Right-handed alpha
Helix 64	64	E	274	279	Right-handed alpha
Helix 65	65	E	280	282	Right-handed 310
Helix 66	66	E	287	308	Right-handed alpha
Helix 67	67	E	316	318	Right-handed 310
Helix 68	68	E	354	359	Right-handed alpha
Helix 69	69	E	364	381	Right-handed alpha
Helix 70	70	E	394	401	Right-handed alpha
Helix 71	71	E	412	423	Right-handed alpha
Helix 72	72	E	426	430	Right-handed 310
Helix 73	73	E	432	446	Right-handed alpha
Helix 74	74	F	88	95	Right-handed alpha
Helix 75	75	F	148	156	Right-handed alpha
Helix 76	76	F	179	186	Right-handed alpha
Helix 77	77	F	230	241	Right-handed alpha
Helix 78	78	F	273	281	Right-handed alpha
Helix 79	79	F	287	308	Right-handed alpha
Helix 80	80	F	354	359	Right-handed alpha
Helix 81	81	F	364	381	Right-handed alpha
Helix 82	82	F	394	402	Right-handed alpha
Helix 83	83	F	412	423	Right-handed alpha
Helix 84	84	F	426	430	Right-handed 310
Helix 85	85	F	432	447	Right-handed alpha

There are 35 sheets in PDB entry 1K9A. 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,

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	57	61	first strand
Strand 2	A	47	51	anti-parallel
Strand 3	A	35	41	anti-parallel
Strand 4	A	13	16	anti-parallel
Strand 5	A	65	67	anti-parallel

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There are 2 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	77	78	first strand
Strand 2	A	177	178	parallel

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There are 5 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	137	139	first strand
Strand 2	A	126	134	anti-parallel
Strand 3	A	116	121	anti-parallel
Strand 4	A	103	108	anti-parallel
Strand 5	A	169	170	parallel

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There are 5 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	195	203	first strand
Strand 2	A	207	214	anti-parallel
Strand 3	A	217	224	anti-parallel
Strand 4	A	262	267	anti-parallel
Strand 5	A	251	256	anti-parallel

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There are 2 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	310	311	first strand
Strand 2	A	337	338	anti-parallel

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There are 2 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	320	322	first strand
Strand 2	A	328	330	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	57	61	first strand
Strand 2	B	47	51	anti-parallel
Strand 3	B	35	41	anti-parallel
Strand 4	B	13	16	anti-parallel
Strand 5	B	65	67	anti-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	B	77	78	first strand
Strand 2	B	177	178	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	104	108	first strand
Strand 2	B	116	122	anti-parallel
Strand 3	B	125	134	anti-parallel
Strand 4	B	137	139	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	B	195	202	first strand
Strand 2	B	207	214	anti-parallel
Strand 3	B	217	224	anti-parallel
Strand 4	B	262	266	anti-parallel
Strand 5	B	251	256	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	320	322	first strand
Strand 2	B	328	330	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	C	57	61	first strand
Strand 2	C	47	52	anti-parallel
Strand 3	C	35	41	anti-parallel
Strand 4	C	13	16	anti-parallel
Strand 5	C	65	67	anti-parallel

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There are 2 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	77	78	first strand
Strand 2	C	177	178	parallel

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There are 4 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	106	107	first strand
Strand 2	C	116	122	anti-parallel
Strand 3	C	125	133	anti-parallel
Strand 4	C	138	139	anti-parallel

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There are 5 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	195	200	first strand
Strand 2	C	209	214	anti-parallel
Strand 3	C	217	224	anti-parallel
Strand 4	C	262	267	anti-parallel
Strand 5	C	251	256	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	272	273	first strand
Strand 2	C	320	322	anti-parallel
Strand 3	C	328	330	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	57	61	first strand
Strand 2	D	47	51	anti-parallel
Strand 3	D	35	41	anti-parallel
Strand 4	D	13	16	anti-parallel
Strand 5	D	65	67	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	D	77	78	first strand
Strand 2	D	177	178	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	D	104	107	first strand
Strand 2	D	117	122	anti-parallel
Strand 3	D	125	130	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	138	139	first strand
Strand 2	D	145	146	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	195	200	first strand
Strand 2	D	209	214	anti-parallel
Strand 3	D	217	224	anti-parallel
Strand 4	D	262	267	anti-parallel
Strand 5	D	251	256	anti-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	D	320	322	first strand
Strand 2	D	328	330	anti-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	D	340	341	first strand
Strand 2	D	362	363	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	57	61	first strand
Strand 2	E	47	52	anti-parallel
Strand 3	E	35	41	anti-parallel
Strand 4	E	13	16	anti-parallel
Strand 5	E	65	67	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	77	78	first strand
Strand 2	E	177	178	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	E	104	108	first strand
Strand 2	E	116	122	anti-parallel
Strand 3	E	125	134	anti-parallel
Strand 4	E	137	139	anti-parallel
Strand 5	E	145	146	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	251	256	first strand
Strand 2	E	262	267	anti-parallel
Strand 3	E	217	222	anti-parallel
Strand 4	E	208	214	anti-parallel
Strand 5	E	195	197	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	251	256	first strand
Strand 2	E	262	267	anti-parallel
Strand 3	E	217	222	anti-parallel
Strand 4	E	208	214	anti-parallel
Strand 5	E	202	203	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	E	272	273	first strand
Strand 2	E	320	322	anti-parallel
Strand 3	E	328	330	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	57	61	first strand
Strand 2	F	47	52	anti-parallel
Strand 3	F	35	41	anti-parallel
Strand 4	F	13	16	anti-parallel
Strand 5	F	65	67	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	F	77	78	first strand
Strand 2	F	177	178	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	104	108	first strand
Strand 2	F	116	121	anti-parallel
Strand 3	F	126	134	anti-parallel
Strand 4	F	137	139	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	195	202	first strand
Strand 2	F	209	214	anti-parallel
Strand 3	F	220	223	anti-parallel
Strand 4	F	262	266	anti-parallel
Strand 5	F	251	256	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	310	311	first strand
Strand 2	F	337	338	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	F	320	322	first strand
Strand 2	F	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: 1K9A

Analysis of interatomic Contacts of Structural Units in PDB entry:
1K9A