Contacts of the helix formed by residues 10 - 18 (chain B) in PDB entry 4I0A
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 PRO 10 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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9B ASP* 1.3 90.2 - - - +
11B THR* 1.3 59.3 + - - +
13B GLU* 3.5 4.8 + - + +
14B TRP* 3.0 31.3 + - - +
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Residues in contact with THR 11 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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9B ASP* 3.4 6.3 + - - -
10B PRO* 1.3 76.0 - - - +
12B LEU* 1.3 60.5 + - - +
14B TRP* 3.4 18.4 + - + -
15B PHE* 2.9 27.7 + - - +
110B ASN* 3.5 29.1 + - - +
112B ASP* 4.5 7.0 + - + +
113B ILE* 4.1 27.4 - - + +
116B ARG* 4.4 17.4 + - - +
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Residues in contact with LEU 12 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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9B ASP* 3.3 29.0 + - + +
11B THR* 1.3 79.8 - - - +
13B GLU* 1.3 57.4 - - - +
15B PHE* 3.1 14.6 + - + +
16B LEU* 2.8 51.4 + - + +
42B TYR* 3.3 44.9 - - + +
70B PHE* 6.1 0.4 - - + -
113B ILE* 5.2 5.2 - - + -
116B ARG* 3.3 25.5 - - - +
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Residues in contact with GLU 13 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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9B ASP 3.1 14.2 + - - +
10B PRO* 4.1 4.9 - - + +
11B THR 3.4 0.2 - - - -
12B LEU* 1.3 78.6 - - - +
14B TRP* 1.3 61.3 + - - +
16B LEU* 3.4 17.4 + - - +
17B SER* 3.1 27.5 + - - -
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Residues in contact with TRP 14 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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10B PRO 3.0 19.5 + - - +
11B THR* 3.4 30.7 - - + -
13B GLU* 1.3 73.6 - - - +
15B PHE* 1.3 72.0 + - - +
17B SER* 2.7 26.6 + - - -
18B HIS* 3.2 31.1 + + - -
106B LEU* 3.3 52.0 - - + -
109B VAL* 3.7 26.7 - - + +
110B ASN* 4.0 23.1 - - + -
113B ILE* 4.4 12.8 - - + -
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Residues in contact with PHE 15 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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11B THR 2.9 14.1 + - - +
12B LEU* 3.3 19.5 - - + +
14B TRP* 1.3 83.6 - - + +
16B LEU* 1.3 66.4 + - + +
18B HIS* 3.0 23.2 + - - +
19B CYS* 3.6 29.7 - - - -
40B LEU* 4.3 6.3 - - + -
41B TYR 5.5 0.4 - - - -
42B TYR* 3.7 33.0 - + + -
70B PHE* 3.7 19.3 - + - -
98B ILE* 4.0 8.1 - - + -
103B PHE* 3.6 30.3 - + - -
106B LEU* 3.9 19.7 - - + -
113B ILE* 3.9 20.6 - - + -
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Residues in contact with LEU 16 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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12B LEU* 2.8 38.9 + - + +
13B GLU* 3.8 19.7 - - - +
14B TRP 3.3 0.2 - - - -
15B PHE* 1.3 80.5 - - + +
17B SER* 1.3 57.3 + - - +
18B HIS 3.0 5.2 - - - -
19B CYS* 2.9 28.2 + - - +
21B ILE* 4.3 15.7 - - + +
42B TYR* 3.8 23.1 - - + -
44B VAL* 4.1 14.8 - - + -
96B ALA* 3.5 31.0 - - + -
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Residues in contact with SER 17 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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13B GLU* 3.1 19.7 + - - -
14B TRP* 2.7 24.0 + - - -
16B LEU* 1.3 76.7 - - - +
18B HIS* 1.3 70.8 + - - +
19B CYS 3.3 4.3 - - - +
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Residues in contact with HIS 18 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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14B TRP* 3.2 42.7 + + - -
15B PHE 3.0 10.3 + - - +
16B LEU 3.0 0.8 - - - -
17B SER* 1.3 91.0 + - - +
19B CYS* 1.3 59.1 + - - +
20B HIS* 5.8 0.5 - - - -
98B ILE* 3.7 17.3 - - + +
102B LYS* 4.7 13.1 - - + +
106B LEU* 3.9 34.3 - - + +
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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