Contacts of the helix formed by residues 58 - 63 (chain C) in PDB entry 1EN6
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 THR 58 (chain C).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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54C GLU 3.4 19.7 - - - +
55C GLU* 2.7 20.4 + - - +
57C ILE* 1.3 78.9 - - - +
59C LYS* 1.3 70.1 + - - +
60C LEU 3.6 1.1 - - - -
150C LEU* 3.6 33.7 - - + +
151C MET* 4.9 3.5 - - - +
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Residues in contact with LYS 59 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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48C PHE* 4.9 7.4 - - + -
51C LEU* 4.2 21.2 - - + +
55C GLU* 2.8 43.2 + - - +
56C LEU* 3.0 11.9 + - - +
58C THR* 1.3 91.3 - - - +
60C LEU* 1.3 63.7 + - - +
61C ASP* 3.2 4.0 - - - +
62C GLN* 3.0 52.7 + - + +
63C LEU* 3.8 8.4 + - - +
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Residues in contact with LEU 60 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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56C LEU* 3.7 13.4 + - + +
57C ILE* 3.6 22.4 - - + +
58C THR 3.6 2.0 - - - -
59C LYS* 1.3 76.8 - - - +
61C ASP* 1.3 62.8 + - - +
63C LEU* 3.2 38.4 + - + +
68C LYS* 3.6 28.3 - - + +
71C LEU* 4.5 4.7 - - + +
72C ARG* 4.0 35.7 - - + +
75C ALA* 5.6 0.2 - - + -
151C MET* 3.9 36.3 - - + +
155C ILE* 4.4 14.4 - - + -
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Residues in contact with ASP 61 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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59C LYS 3.2 1.6 - - - -
60C LEU* 1.3 76.7 - - - +
62C GLN* 1.3 62.9 + - + +
63C LEU 3.2 6.4 + - - +
68C LYS* 2.6 34.6 + - - +
151C MET 5.7 0.3 - - - +
154C ALA* 5.9 2.8 - - - +
155C ILE* 4.1 15.2 - - - +
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Residues in contact with GLN 62 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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48C PHE* 3.8 26.9 - - + -
59C LYS* 3.0 46.4 + - + +
61C ASP* 1.3 80.0 - - + +
63C LEU* 1.3 61.2 + - - +
64C PRO* 4.0 1.2 - - - +
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Residues in contact with LEU 63 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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45C LEU* 3.8 13.5 - - + -
48C PHE* 3.5 42.0 - - + -
56C LEU* 4.3 9.0 - - + -
59C LYS 4.0 7.0 - - - +
60C LEU* 3.2 33.6 + - + +
61C ASP 3.8 7.3 - - - +
62C GLN* 1.3 81.1 - - - +
64C PRO* 1.3 76.2 - - + +
65C ALA* 3.6 1.0 + - - -
67C LYS* 4.3 5.2 - - + +
68C LYS* 4.4 10.3 - - - +
71C LEU* 3.5 37.0 - - + -
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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