Contacts of the helix formed by residues 5 - 19 (chain A) in PDB entry 1A03
Residue contacts within the protein 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). A
short description of the analytical approach
is given at the end of the page.
Note:
Non-standard 3 letter residue
codes indicate a heterogroup. To identify
and analyse, use LPC software
Legend:
Dist - nearest distance (Å) between atoms of two residues
Surf - contact surface area (Å2) between two residues
HB - hydrophilic-hydrophilic contact (hydrogen bond)
Arom - aromatic-aromatic contact
Phob - hydrophobic-hydrophobic contact
DC - hydrophobic-hydrophilic contact (destabilizing contact)
+/- - indicates presence/absence of a specific contacts
* - indicates residues forming contacts by their side chain
(including CA atoms)
Residues in contact with LEU 5 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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3A SER* 3.7 9.2 - - - +
4A PRO* 1.3 77.5 - - - +
6A ASP* 1.3 65.1 + - - +
8A ALA* 3.0 4.2 + - + +
9A ILE* 2.9 45.3 + - + +
15B ILE* 3.8 27.3 - - + +
37B LEU* 5.0 18.4 - - + -
41B GLU* 5.1 5.4 - - + +
49B GLN* 5.9 1.3 - - - +
52B GLU* 4.6 15.7 - - - +
73B TYR* 3.7 29.6 - - + +
76B PHE* 5.9 7.6 - - + -
80B LEU* 6.3 1.8 - - + -
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Residues in contact with ASP 6 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1A MET 3.1 31.1 + - - +
2A ALA* 4.1 10.0 - - - -
3A SER* 2.9 13.2 + - - +
5A LEU* 1.3 73.1 - - + +
7A GLN* 1.3 55.5 + - - +
9A ILE* 3.4 15.1 - - - +
10A GLY* 2.8 34.9 + - - -
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Residues in contact with GLN 7 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
3A SER 2.8 21.3 + - - +
4A PRO* 3.5 9.9 - - + +
6A ASP* 1.3 75.8 + - - +
8A ALA* 1.3 57.0 + - - +
10A GLY* 5.0 0.9 - - - -
11A LEU* 2.8 55.3 + - + +
11B LEU* 4.7 8.5 - - + +
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Residues in contact with ALA 8 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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4A PRO 2.8 21.3 + - - +
5A LEU* 3.0 4.7 + - + +
7A GLN* 1.3 71.1 - - - +
9A ILE* 1.3 67.7 + - + +
11A LEU* 3.3 2.9 + - - +
12A LEU* 2.9 24.7 + - - +
8B ALA* 5.1 3.4 - - - +
11B LEU* 3.9 37.6 - - + +
12B LEU* 4.4 6.5 - - + +
15B ILE* 4.1 16.6 - - + -
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Residues in contact with ILE 9 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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5A LEU* 2.9 39.1 + - + +
6A ASP* 3.4 21.3 - - - +
8A ALA* 1.3 76.0 - - + +
10A GLY* 1.3 57.4 + - - +
12A LEU* 3.1 7.8 + - - +
13A ILE* 2.8 42.6 + - + +
12B LEU* 5.2 3.4 - - + -
52B GLU* 5.4 3.1 - - - +
73B TYR* 4.8 5.8 - - + +
77B LEU* 3.8 34.3 - - + -
80B LEU* 3.7 31.0 - - + -
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Residues in contact with GLY 10 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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6A ASP* 2.8 24.7 + - - -
7A GLN* 3.7 1.3 - - - -
9A ILE* 1.3 73.1 - - - +
11A LEU* 1.3 55.1 + - - +
13A ILE* 3.6 10.7 - - - +
14A GLY* 2.8 31.0 + - - -
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Residues in contact with LEU 11 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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7A GLN* 2.8 38.9 + - + +
8A ALA 3.6 3.8 - - - +
10A GLY* 1.3 70.8 - - - +
12A LEU* 1.3 57.6 + - - +
14A GLY* 5.0 0.4 - - - -
15A ILE* 2.8 39.6 + - + +
7B GLN* 3.7 21.3 - - - +
8B ALA* 4.7 3.1 - - + -
11B LEU* 3.3 31.6 - - + -
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Residues in contact with LEU 12 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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8A ALA 2.9 17.5 + - - +
9A ILE* 3.5 7.4 - - - +
11A LEU* 1.3 76.3 - - - +
13A ILE* 1.3 67.1 + - + +
15A ILE* 3.5 3.6 - - - +
16A PHE* 2.9 30.5 + - - +
73A TYR* 3.3 34.0 + - + +
74A ILE* 5.4 0.7 - - + -
77A LEU* 3.5 38.8 - - + -
5B LEU* 5.6 0.2 - - + -
8B ALA* 3.8 37.2 - - + +
9B ILE* 4.3 5.4 - - + +
12B LEU* 4.1 18.8 - - + -
77B LEU* 4.6 3.6 - - + -
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Residues in contact with ILE 13 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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9A ILE* 2.8 30.0 + - + +
10A GLY* 3.6 11.2 - - - +
12A LEU* 1.3 76.7 - - + +
14A GLY* 1.3 60.6 + - - +
16A PHE* 3.4 10.3 + - + +
17A HIS* 2.8 31.6 + - - +
70A PHE* 4.5 21.1 - - + -
77B LEU* 3.7 26.5 - - + -
81B ALA* 4.5 10.1 - - + -
84B TYR* 3.5 32.8 - - + +
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Residues in contact with GLY 14 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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10A GLY 2.8 18.3 + - - -
11A LEU* 3.8 0.7 - - - -
13A ILE* 1.3 79.4 - - - +
15A ILE* 1.3 61.6 + - - +
17A HIS* 2.9 9.7 + - - +
18A LYS* 2.9 27.8 + - - +
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Residues in contact with ILE 15 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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11A LEU* 2.8 25.7 + - + +
12A LEU* 3.5 9.2 - - - +
14A GLY* 1.3 69.5 - - - -
16A PHE* 1.3 59.6 + - - +
18A LYS* 3.2 7.5 + - + +
19A TYR* 2.8 39.0 + - + +
22A LYS* 4.6 14.4 - - - +
4B PRO* 3.8 32.1 - - + +
5B LEU* 3.9 29.6 - - + +
7B GLN* 5.7 2.0 - - - +
8B ALA* 4.5 5.6 - - + -
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Residues in contact with PHE 16 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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12A LEU 2.9 19.4 + - - +
13A ILE* 3.5 8.1 - - + +
15A ILE* 1.3 78.6 - - - +
17A HIS* 1.3 56.8 + - + +
19A TYR* 4.3 12.6 - + - -
20A SER* 2.8 60.0 + - - -
27A HIS* 3.7 19.7 - + - -
29A LEU* 4.2 23.3 - - + -
69A ASN 5.3 0.2 - - - -
70A PHE* 3.6 36.1 - + - -
73A TYR* 3.3 63.0 - + + -
5B LEU* 4.9 2.2 - - - -
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Residues in contact with HIS 17 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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13A ILE 2.8 20.2 + - - +
14A GLY* 2.9 7.8 + - - +
16A PHE* 1.3 81.2 - - + +
18A LYS* 1.3 63.6 + - + +
20A SER* 3.6 4.3 - - - -
25A ASP* 3.2 41.7 + - - +
26A LYS 2.8 33.4 + - - +
27A HIS* 2.8 44.0 + + + -
84B TYR* 6.0 1.8 - + - -
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Residues in contact with LYS 18 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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14A GLY 2.9 19.4 + - - +
15A ILE* 3.6 11.2 - - + +
17A HIS* 1.3 76.7 - - + +
19A TYR* 1.3 66.8 + - - +
21A GLY 2.8 29.8 + - - +
22A LYS* 3.1 23.0 + - - +
25A ASP* 3.7 33.7 + - + +
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Residues in contact with TYR 19 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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15A ILE* 2.8 29.9 + - + +
16A PHE* 3.6 17.7 - + - +
18A LYS* 1.3 71.1 - - - +
20A SER* 1.3 63.0 + - - +
21A GLY 2.9 2.1 + - - -
22A LYS* 3.4 23.2 + - + +
29A LEU* 3.5 29.9 - - + +
33A GLU* 3.2 35.1 - - + +
34A LEU* 3.5 16.1 - - - +
36A GLU* 5.9 0.9 - - + -
37A LEU* 3.2 45.4 - - + +
60A LEU* 5.6 0.8 - - + +
73A TYR* 5.5 5.4 - + - -
5B LEU* 4.9 14.6 - - + -
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A short description of the
analytical approach
The contact analysis used in this page
is based upon the approach
developed in:
Sobolev V., Wade R.C., Vriend G.
and Edelman M. PROTEINS (1996)
25, 120-129.
Contact legitimacy depends on the hydrophobic-hydrophilic
properties of the contacting atoms. In order to
define it, for each inter-atomic contact,
eight atom classes have been introduced:
I Hydrophilic - N and O that can donate and accept hydrogen bonds
(e.g., oxygen of hydroxyl group of Ser. or Thr)
II Acceptor - N or O that can only accept a hydrogen bond
III Donor - N that can only donate a hydrogen bond
IV Hydrophobic - Cl, Br, I and all C atoms that are not in
aromatic rings and do not have a covalent bond to
a N or O atom
V Aromatic - C in aromatic rings irrespective of any other
bonds formed by the atom
VI Neutral - C atoms that have a covalent bond to at least one
atom of class I or two or more atoms from class II
or III; atoms; S, F, P, and metal atoms in all cases
VII Neutral-donor - C atoms that have a covalent bond with only one
atom of class III
VIII Neutral-acceptor - C atoms that have a covalent bond with only
one atom of class II
For each pair of contacts the state of legitimacy
is shown below:
Legend:
+, legitimate
-, illegitimate
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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Warning!
Atom classes for heterogroups are automatically
assigned based on the atomic coordinates. However, in
three cases (see below) the automatic assignment
is currently ambiguous. In these
cases, the user is advised to manually analyse
the full list of contacts using
LPC software.
1. Carbon atoms belonging to a 4-, 5- or 6-member ring are
considered "aromatic" (Class V) if the ring is approximately
planar, and "hydrophobic" (Class IV) or "neutral" (Classes
VI, VII, VIII) if the ring is non-planar.
2. The oxygen atom of a carbonyl or hydroxy group is considered
"hydroxy" (Class I) if the CO bond is longer than 1.29 Å, and
"carbonyl" (Class II) if shorter.
3. All nitrogen atoms are considered "hydrophilic" (Class I).
Please E-mail any
questions and/or suggestions concerning this page to
Vladimir.Sobolev@weizmann.ac.il