Contacts of the helix formed by residues 14 - 21 (chain D) in PDB entry 4JCQ
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 14 (chain D).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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15C THR* 3.9 35.4 - - + +
16C GLN* 4.8 12.3 - - + +
19C ILE* 3.8 38.4 - - + -
44C LEU* 3.5 23.5 - - + +
48C ILE* 5.6 1.3 - - + -
13D ILE* 1.3 80.6 - - + +
15D THR* 1.3 62.2 + - - +
18D LEU* 3.2 24.3 + - - +
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Residues in contact with THR 15 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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13D ILE 4.6 0.8 - - - +
14D LEU* 1.3 76.5 - - - +
16D GLN* 1.3 60.0 + - - +
18D LEU* 3.3 17.5 + - + +
19D ILE* 2.9 40.3 + - + +
14E LEU* 3.7 26.7 - - + -
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Residues in contact with GLN 16 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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13D ILE* 3.9 29.7 + - - +
14D LEU 3.3 0.2 - - - -
15D THR* 1.3 79.4 - - - +
17D LYS* 1.3 60.7 + - - +
19D ILE* 3.5 9.8 + - + +
20D ASP* 3.2 53.3 + - - +
13E ILE* 5.5 15.5 - - + -
14E LEU* 4.8 12.7 - - + +
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Residues in contact with LYS 17 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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44C LEU* 4.4 7.6 - - + -
47C SER* 3.7 30.2 + - - +
48C ILE* 3.9 36.6 + - + +
13D ILE* 3.2 23.7 + - + +
14D LEU 4.1 3.6 - - - +
16D GLN* 1.3 77.2 - - - +
18D LEU* 1.3 63.1 + - - +
19D ILE 3.3 0.4 - - - -
20D ASP* 3.3 27.7 + - + +
21D THR* 3.5 14.0 - - - +
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Residues in contact with LEU 18 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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40C LYS* 3.9 49.1 - - + +
43C LEU* 5.2 5.4 - - + -
44C LEU* 4.2 18.8 - - + +
14D LEU 3.2 15.5 + - - +
15D THR* 3.3 24.4 + - + +
17D LYS* 1.3 77.8 - - - +
19D ILE* 1.3 61.3 + - + +
21D THR* 2.7 31.2 + - + +
22D ARG 4.2 1.2 + - - -
23D THR 4.7 5.3 + - - +
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Residues in contact with ILE 19 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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15D THR* 2.9 35.8 + - + +
16D GLN* 3.7 10.1 - - + +
17D LYS 3.3 0.2 - - - -
18D LEU* 1.3 78.9 - - + +
20D ASP* 1.3 65.5 + - - +
21D THR 3.2 0.7 - - - -
22D ARG* 3.1 19.1 + - - +
44D LEU* 3.8 21.3 - - + -
45D LEU* 3.5 18.5 - - + +
48D ILE* 3.7 28.5 - - + -
14E LEU* 3.9 21.5 - - + -
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Residues in contact with ASP 20 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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16D GLN* 3.2 38.3 + - - +
17D LYS* 3.4 25.1 - - + +
18D LEU 3.3 0.6 - - - -
19D ILE* 1.3 81.9 - - - +
21D THR* 1.3 60.5 + - + +
22D ARG* 3.1 14.1 + - - +
48D ILE* 6.2 0.3 - - - +
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Residues in contact with THR 21 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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43C LEU* 4.3 16.2 - - + +
44C LEU* 5.5 0.2 - - - -
47C SER* 3.6 27.4 - - - +
17D LYS 3.5 15.5 - - - +
18D LEU* 2.7 26.1 + - + +
20D ASP* 1.3 77.5 - - + +
22D ARG* 1.3 68.5 + - - +
23D THR* 3.2 26.0 + - - -
54D THR* 5.4 1.4 + - - -
186D ARG* 6.1 2.9 - - - -
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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