Analysis of interatomic Contacts of Structural Units in PDB entry:
3T1I

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 3T1I entry

There are 4 chains in PDB entry 3T1I (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	LEU 7	ARG 400
B	LEU 7	ARG 400
C	ASP 8	ARG 400
D	ASP 8	ARG 400

There are 44 helices in PDB entry 3T1I. 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	10	Right-handed 310
Helix 2	2	A	34	50	Right-handed alpha
Helix 3	3	A	68	84	Right-handed alpha
Helix 4	4	A	139	148	Right-handed alpha
Helix 5	5	A	185	195	Right-handed alpha
Helix 6	6	A	206	208	Right-handed 310
Helix 7	7	A	230	234	Right-handed 310
Helix 8	8	A	275	280	Right-handed alpha
Helix 9	9	A	315	317	Right-handed 310
Helix 10	10	A	327	351	Right-handed alpha
Helix 11	11	A	378	386	Right-handed alpha
Helix 12	12	B	8	10	Right-handed 310
Helix 13	13	B	34	50	Right-handed alpha
Helix 14	14	B	68	84	Right-handed alpha
Helix 15	15	B	139	148	Right-handed alpha
Helix 16	16	B	185	195	Right-handed alpha
Helix 17	17	B	206	208	Right-handed 310
Helix 18	18	B	230	234	Right-handed 310
Helix 19	19	B	275	280	Right-handed alpha
Helix 20	20	B	315	317	Right-handed 310
Helix 21	21	B	327	351	Right-handed alpha
Helix 22	22	B	378	386	Right-handed alpha
Helix 23	23	C	8	10	Right-handed 310
Helix 24	24	C	34	50	Right-handed alpha
Helix 25	25	C	68	84	Right-handed alpha
Helix 26	26	C	139	148	Right-handed alpha
Helix 27	27	C	185	195	Right-handed alpha
Helix 28	28	C	206	208	Right-handed 310
Helix 29	29	C	230	234	Right-handed 310
Helix 30	30	C	275	280	Right-handed alpha
Helix 31	31	C	315	317	Right-handed 310
Helix 32	32	C	327	351	Right-handed alpha
Helix 33	33	C	378	386	Right-handed alpha
Helix 34	34	D	8	10	Right-handed 310
Helix 35	35	D	34	50	Right-handed alpha
Helix 36	36	D	68	84	Right-handed alpha
Helix 37	37	D	139	148	Right-handed alpha
Helix 38	38	D	185	195	Right-handed alpha
Helix 39	39	D	206	208	Right-handed 310
Helix 40	40	D	230	234	Right-handed 310
Helix 41	41	D	275	280	Right-handed alpha
Helix 42	42	D	315	317	Right-handed 310
Helix 43	43	D	327	351	Right-handed alpha
Helix 44	44	D	378	386	Right-handed alpha

There are 16 sheets in PDB entry 3T1I. 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,

There are 6 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	150	152	first strand
Strand 2	A	122	124	parallel
Strand 3	A	54	57	parallel
Strand 4	A	12	18	parallel
Strand 5	A	283	290	anti-parallel
Strand 6	A	293	300	anti-parallel

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There are 7 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	92	93	first strand
Strand 2	A	167	171	anti-parallel
Strand 3	A	174	181	anti-parallel
Strand 4	A	210	216	parallel
Strand 5	A	240	243	parallel
Strand 6	A	262	265	parallel
Strand 7	A	250	255	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	162	164	first strand
Strand 2	A	198	200	parallel

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There are 3 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	307	313	first strand
Strand 2	A	362	368	parallel
Strand 3	A	396	399	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	150	152	first strand
Strand 2	B	122	124	parallel
Strand 3	B	54	57	parallel
Strand 4	B	12	18	parallel
Strand 5	B	283	290	anti-parallel
Strand 6	B	293	300	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	92	93	first strand
Strand 2	B	167	171	anti-parallel
Strand 3	B	174	181	anti-parallel
Strand 4	B	210	216	parallel
Strand 5	B	240	243	parallel
Strand 6	B	262	265	parallel
Strand 7	B	250	255	anti-parallel

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There are 2 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	162	164	first strand
Strand 2	B	198	200	parallel

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There are 3 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	307	313	first strand
Strand 2	B	362	368	parallel
Strand 3	B	396	399	parallel

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There are 6 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	150	152	first strand
Strand 2	C	122	124	parallel
Strand 3	C	54	57	parallel
Strand 4	C	12	18	parallel
Strand 5	C	283	290	anti-parallel
Strand 6	C	293	300	anti-parallel

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There are 7 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	92	93	first strand
Strand 2	C	167	171	anti-parallel
Strand 3	C	174	181	anti-parallel
Strand 4	C	210	216	parallel
Strand 5	C	240	243	parallel
Strand 6	C	262	265	parallel
Strand 7	C	250	255	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	C	162	164	first strand
Strand 2	C	198	200	parallel

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There are 3 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	307	313	first strand
Strand 2	C	362	368	parallel
Strand 3	C	396	399	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	150	152	first strand
Strand 2	D	122	124	parallel
Strand 3	D	54	57	parallel
Strand 4	D	12	18	parallel
Strand 5	D	283	290	anti-parallel
Strand 6	D	293	300	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	92	93	first strand
Strand 2	D	167	171	anti-parallel
Strand 3	D	174	181	anti-parallel
Strand 4	D	210	216	parallel
Strand 5	D	240	243	parallel
Strand 6	D	262	265	parallel
Strand 7	D	250	255	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	162	164	first strand
Strand 2	D	198	200	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	D	307	313	first strand
Strand 2	D	362	368	parallel
Strand 3	D	396	399	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: 3T1I

Analysis of interatomic Contacts of Structural Units in PDB entry:
3T1I