Analysis of interatomic Contacts of Structural Units in PDB entry:
2XLF

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 2XLF entry

There are 4 chains in PDB entry 2XLF (CSU analysis of residue contacts immediately below table)

Chain ID	Initial residue	Terminal residue
A	HIS 36	SER 268
B	HIS 36	SER 268
C	HIS 36	SER 268
D	HIS 36	SER 268

There are 22 helices in PDB entry 2XLF. Click on helix of interest for CSU analysis.

Helix number	Helix ID	Chain ID	Initial residue	Terminal residue	Helix class
Helix 1	1	A	180	189	Right-handed alpha
Helix 2	2	A	202	212	Right-handed alpha
Helix 3	3	A	213	216	Right-handed 310
Helix 4	4	A	236	241	Right-handed alpha
Helix 5	5	A	244	261	Right-handed alpha
Helix 6	6	B	180	189	Right-handed alpha
Helix 7	7	B	202	212	Right-handed alpha
Helix 8	8	B	213	216	Right-handed 310
Helix 9	9	B	223	226	Right-handed 310
Helix 10	10	B	236	241	Right-handed alpha
Helix 11	11	B	244	261	Right-handed alpha
Helix 12	12	C	180	189	Right-handed alpha
Helix 13	13	C	202	212	Right-handed alpha
Helix 14	14	C	213	216	Right-handed 310
Helix 15	15	C	223	226	Right-handed 310
Helix 16	16	C	236	241	Right-handed alpha
Helix 17	17	C	244	260	Right-handed alpha
Helix 18	18	D	180	189	Right-handed alpha
Helix 19	19	D	202	212	Right-handed alpha
Helix 20	20	D	213	216	Right-handed 310
Helix 21	21	D	236	242	Right-handed alpha
Helix 22	22	D	244	261	Right-handed alpha

There are 20 sheets in PDB entry 2XLF. Click on sheet of interest to get list of strands forming it: AA, AB, AC, AD, AE, BA, BB, BC, BD, BE, CA, CB, CC, CD, CE, A, DB, C, DD, DE,

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	50	54	first strand
Strand 2	A	58	67	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	140	143	first strand
Strand 2	A	93	98	anti-parallel
Strand 3	A	159	167	anti-parallel
Strand 4	A	70	79	anti-parallel
Strand 5	A	58	67	anti-parallel
Strand 6	A	266	267	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	140	143	first strand
Strand 2	A	93	98	anti-parallel
Strand 3	A	159	167	anti-parallel
Strand 4	A	70	79	anti-parallel
Strand 5	A	58	67	anti-parallel
Strand 6	A	50	54	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	266	267	first strand
Strand 2	A	58	67	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	A	218	220	first strand
Strand 2	A	88	90	anti-parallel
Strand 3	A	147	152	anti-parallel
Strand 4	A	105	112	anti-parallel
Strand 5	A	128	134	anti-parallel
Strand 6	A	228	232	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	50	54	first strand
Strand 2	B	58	67	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	140	143	first strand
Strand 2	B	93	98	anti-parallel
Strand 3	B	159	167	anti-parallel
Strand 4	B	70	79	anti-parallel
Strand 5	B	58	67	anti-parallel
Strand 6	B	266	267	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	140	143	first strand
Strand 2	B	93	98	anti-parallel
Strand 3	B	159	167	anti-parallel
Strand 4	B	70	79	anti-parallel
Strand 5	B	58	67	anti-parallel
Strand 6	B	50	54	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	266	267	first strand
Strand 2	B	58	67	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	B	218	220	first strand
Strand 2	B	88	90	anti-parallel
Strand 3	B	147	152	anti-parallel
Strand 4	B	105	112	anti-parallel
Strand 5	B	128	134	anti-parallel
Strand 6	B	228	232	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	50	53	first strand
Strand 2	C	59	67	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	140	143	first strand
Strand 2	C	93	98	anti-parallel
Strand 3	C	159	167	anti-parallel
Strand 4	C	70	79	anti-parallel
Strand 5	C	59	67	anti-parallel
Strand 6	C	266	267	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	140	143	first strand
Strand 2	C	93	98	anti-parallel
Strand 3	C	159	167	anti-parallel
Strand 4	C	70	79	anti-parallel
Strand 5	C	59	67	anti-parallel
Strand 6	C	50	53	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	266	267	first strand
Strand 2	C	59	67	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	C	218	220	first strand
Strand 2	C	88	90	anti-parallel
Strand 3	C	147	152	anti-parallel
Strand 4	C	105	112	anti-parallel
Strand 5	C	128	134	anti-parallel
Strand 6	C	228	232	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	50	54	first strand
Strand 2	D	58	67	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	139	143	first strand
Strand 2	D	93	99	anti-parallel
Strand 3	D	159	167	anti-parallel
Strand 4	D	70	79	anti-parallel
Strand 5	D	58	67	anti-parallel
Strand 6	D	266	267	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	139	143	first strand
Strand 2	D	93	99	anti-parallel
Strand 3	D	159	167	anti-parallel
Strand 4	D	70	79	anti-parallel
Strand 5	D	58	67	anti-parallel
Strand 6	D	50	54	anti-parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	266	267	first strand
Strand 2	D	58	67	parallel

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

Strand number	Chain ID	Initial residue	Terminal residue	Strand sense
Strand 1	D	218	220	first strand
Strand 2	D	88	90	anti-parallel
Strand 3	D	147	152	anti-parallel
Strand 4	D	105	112	anti-parallel
Strand 5	D	128	134	anti-parallel
Strand 6	D	228	232	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: 2XLF

Analysis of interatomic Contacts of Structural Units in PDB entry:
2XLF