Contacts of the helix formed by residues 167 - 176 (chain D) in PDB entry 2R2N
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 VAL 167 (chain D).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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160D ALA* 2.9 24.2 + - + +
161D SER* 4.1 3.1 - - - -
162D ASP* 3.7 38.6 - - + +
166D ILE* 1.3 73.4 - - - +
168D PRO* 1.3 72.0 - - + +
169D ASP* 3.8 19.3 - - + +
170D SER* 3.1 24.1 + - - +
171D LEU 3.3 8.0 + - - -
212D ARG* 3.9 8.1 - - - +
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Residues in contact with PRO 168 (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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166D ILE* 3.4 11.4 - - + +
167D VAL* 1.3 84.2 - - + +
169D ASP* 1.3 52.0 + - - +
171D LEU* 3.1 10.0 + - + +
172D ARG* 2.7 43.1 + - - +
212D ARG* 3.5 39.9 - - + +
215D GLU* 3.7 42.2 - - + +
216D ILE* 4.4 7.0 - - + -
219D LEU* 3.9 3.9 - - + +
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Residues in contact with ASP 169 (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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167D VAL* 3.2 13.4 - - + +
168D PRO* 1.3 78.2 - - - +
170D SER* 1.3 55.9 + - - +
172D ARG* 2.9 26.1 + - - +
173D ASP* 2.9 41.0 + - - +
215D GLU* 4.8 2.8 - - - +
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Residues in contact with SER 170 (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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159D VAL* 3.9 3.3 - - - +
160D ALA* 2.9 46.5 + - - +
167D VAL* 3.1 16.4 + - - +
169D ASP* 1.3 74.9 - - - +
171D LEU* 1.3 67.3 + - - +
173D ASP* 3.2 6.3 + - - +
174D ILE* 3.0 36.8 + - - +
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Residues in contact with LEU 171 (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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136D LEU* 4.1 22.7 - - + -
159D VAL* 3.9 27.9 - - + +
166D ILE* 4.5 2.9 - - + -
167D VAL 3.3 5.3 + - - +
168D PRO* 3.1 9.5 + - + +
170D SER* 1.3 77.3 + - - +
172D ARG* 1.3 65.9 + - - +
174D ILE* 3.4 2.0 + - + -
175D LEU* 3.1 46.3 + - + +
194D LEU* 3.9 11.9 - - + -
216D ILE* 3.8 36.1 - - + +
219D LEU* 3.7 25.1 - - + -
225D PHE* 4.4 4.0 - - + -
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Residues in contact with ARG 172 (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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168D PRO 2.7 26.1 + - - +
169D ASP* 2.9 38.2 + - - +
171D LEU* 1.3 71.6 - - - +
173D ASP* 1.3 67.8 + - - +
175D LEU* 3.2 6.3 + - - +
176D SER* 3.1 21.3 + - - -
215D GLU* 3.7 30.7 + - - +
218D GLU* 5.2 4.6 + - - -
219D LEU* 3.6 42.6 - - + +
222D LYS* 6.3 0.7 - - - +
223D TYR* 5.1 4.2 + - + +
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Residues in contact with ASP 173 (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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169D ASP* 2.9 31.3 + - - +
170D SER* 3.2 6.7 + - - +
171D LEU 3.2 0.4 - - - -
172D ARG* 1.3 79.5 - - - +
174D ILE* 1.3 63.7 + - + +
176D SER* 2.5 30.6 + - - +
177D ARG* 4.0 0.7 + - - +
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Residues in contact with ILE 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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136D LEU* 3.6 32.3 - - + -
157D ILE* 3.9 15.9 - - + -
158D ASN 4.3 17.5 - - - +
159D VAL* 5.0 2.9 - - + -
170D SER* 3.0 29.0 + - - +
171D LEU* 4.1 8.3 - - - +
173D ASP* 1.3 75.7 - - + +
175D LEU* 1.3 68.3 + - + +
177D ARG* 2.8 43.6 + - - +
178D TRP* 3.6 22.8 - - + -
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Residues in contact with LEU 175 (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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136D LEU* 4.4 3.4 - - + -
171D LEU* 3.1 42.2 + - + +
172D ARG 3.7 3.1 - - - +
173D ASP 3.1 0.2 - - - -
174D ILE* 1.3 75.3 - - + +
176D SER* 1.3 56.4 + - - +
177D ARG 2.9 5.4 - - - -
178D TRP* 3.0 33.5 + - + +
191D PRO* 4.0 29.4 - - + -
219D LEU* 4.2 8.3 - - + -
223D TYR* 3.4 43.8 - - + -
225D PHE* 3.5 36.3 - - + -
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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
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172D ARG* 3.1 10.9 + - - -
173D ASP* 2.5 26.6 + - - +
175D LEU* 1.3 74.6 - - - +
177D ARG* 1.3 60.8 + - - +
178D TRP 3.2 9.3 + - - +
179D LYS* 6.1 0.2 - - - -
223D TYR* 4.2 8.3 + - - -
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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