Contacts of the helix formed by residues 89 - 94 (chain A) in PDB entry 4NKT
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 GLY 89 (chain A).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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88A PHE* 1.3 77.1 - - - +
90A SER* 1.3 64.9 + - - -
92A GLU* 3.1 4.7 + - - +
93A SER* 3.1 24.1 + - - -
103A ASP* 4.5 3.6 - - - -
172A THR* 2.9 16.4 + - - +
401A 2KH 3.6 33.2 - - - -
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Residues in contact with SER 90 (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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88A PHE 4.0 0.4 + - - -
89A GLY* 1.3 72.6 - - - -
91A LEU* 1.3 64.5 + - - +
93A SER* 3.4 8.7 - - - -
94A GLY 2.9 8.3 + - - -
95A LEU* 2.8 35.8 + - - -
96A ALA* 3.4 12.5 + - - +
100A SER* 4.6 5.2 + - - -
101A ASP 5.0 2.3 + - - -
103A ASP* 5.0 2.7 + - - -
193A LYS* 3.4 18.8 + - - -
401A 2KH 3.0 32.4 + - - -
403A BR 4.3 4.7 - - - -
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Residues in contact with LEU 91 (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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57A ILE* 3.5 32.5 - - + -
62A PHE* 3.5 36.6 - - + -
65A LYS* 4.7 17.0 - - + -
66A ARG* 4.7 8.5 - - - +
87A ALA* 5.9 2.7 - - + -
88A PHE 4.6 5.6 + - - +
89A GLY 3.3 0.4 - - - -
90A SER* 1.3 84.5 + - - +
92A GLU* 1.3 62.8 + - - +
94A GLY* 3.5 7.6 + - - -
96A ALA* 3.7 11.0 - - + -
100A SER* 4.1 12.8 - - - +
101A ASP 3.1 31.4 - - - +
102A MET* 4.0 16.4 - - + -
103A ASP 5.1 1.8 - - - +
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Residues in contact with GLU 92 (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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66A ARG* 2.7 37.1 + - - +
87A ALA* 3.6 26.1 - - + +
88A PHE* 3.9 12.7 + - - +
89A GLY 3.1 9.4 + - - +
91A LEU* 1.3 78.9 - - - +
93A SER* 1.3 61.5 + - - +
94A GLY* 3.5 0.3 + - - -
172A THR* 3.8 17.7 - - + -
176A SER* 3.6 7.6 + - - +
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Residues in contact with SER 93 (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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89A GLY 3.1 13.5 + - - -
90A SER* 3.3 16.5 + - - -
92A GLU* 1.3 76.5 - - - +
94A GLY* 1.3 59.5 + - - +
95A LEU* 3.4 22.2 - - - +
172A THR* 4.2 7.9 - - - -
175A LEU* 4.3 7.6 - - - +
176A SER* 3.1 30.4 - - - -
179A THR* 3.2 26.5 + - - +
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Residues in contact with GLY 94 (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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57A ILE* 6.4 1.3 - - - -
62A PHE* 6.0 2.0 - - - -
90A SER 2.9 5.6 + - - -
91A LEU* 3.5 7.5 + - - -
92A GLU 3.3 3.6 + - - -
93A SER* 1.3 79.6 - - - +
95A LEU* 1.3 58.9 + - - +
96A ALA* 3.4 6.2 + - - -
179A THR* 5.8 0.7 - - - -
186A LYS* 3.3 36.7 - - - +
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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