Contacts of the helix formed by residues 173 - 178 (chain D) in PDB entry 4TNV
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 173 (chain D).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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131C PRO* 5.9 0.5 - - - +
133C TYR* 6.1 0.4 - - - -
171D LYS* 3.3 3.0 - - - +
172D VAL* 1.3 81.9 - - - +
174D LEU* 1.3 60.0 + - - +
175D SER 3.3 2.9 - - - -
176D SER* 2.7 29.0 + - - -
177D SER* 2.8 16.6 + - - -
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Residues in contact with LEU 174 (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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36D LEU* 3.7 39.5 - - + +
37D ARG 4.3 9.0 - - - +
38D THR* 5.0 0.7 - - - -
39D ILE* 4.3 22.9 - - + +
170D LEU* 3.6 21.8 - - + -
171D LYS* 3.4 18.6 + - + +
172D VAL 3.6 1.0 + - - -
173D GLY* 1.3 76.6 - - - +
175D SER* 1.3 65.3 + - - +
177D SER* 2.5 29.5 + - - +
178D LEU* 3.5 12.4 + - + +
183D LEU* 3.4 34.3 - - + -
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Residues in contact with SER 175 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
173D GLY 3.3 0.6 - - - -
174D LEU* 1.3 80.0 - - - +
176D SER* 1.3 59.5 + - - +
178D LEU* 4.2 8.5 + - - +
181D PHE 4.5 4.0 - - - +
182D GLN* 4.3 14.2 + - - +
183D LEU* 3.4 47.0 + - - -
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Residues in contact with SER 176 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
47C MET* 5.4 1.6 - - - +
131C PRO* 5.7 1.4 - - - +
132C MET 5.3 4.5 - - - +
133C TYR* 4.2 29.1 + - - -
272C TYR* 5.8 2.4 - - - -
173D GLY* 2.7 27.8 + - - -
175D SER* 1.3 79.0 - - - +
177D SER* 1.3 64.1 + - - +
178D LEU 3.1 9.9 + - - +
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Residues in contact with SER 177 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
47C MET* 3.6 26.6 - - - +
131C PRO* 4.9 19.1 - - - -
38D THR* 5.4 7.9 - - - -
39D ILE 4.5 11.4 + - - +
173D GLY 2.8 16.2 + - - -
174D LEU* 2.5 29.7 + - - +
176D SER* 1.3 78.8 - - - +
178D LEU* 1.3 69.9 + - - +
179D PRO* 3.5 2.4 - - - +
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Residues in contact with LEU 178 (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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47C MET* 5.1 1.0 - - - +
272C TYR* 5.0 6.2 - - - -
39D ILE* 3.5 37.9 - - + +
42D ILE* 3.6 30.5 - - + -
174D LEU* 3.5 15.5 + - + +
175D SER* 4.5 5.3 - - - +
176D SER 3.1 10.2 + - - +
177D SER* 1.3 90.3 + - - +
179D PRO* 1.3 69.5 - - + +
181D PHE* 3.3 28.4 - - + +
183D LEU* 4.9 10.1 - - + -
209D LEU* 3.8 25.1 - - + -
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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