Contacts of the helix formed by residues 164 - 169 (chain E) in PDB entry 1OP8
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 ASP 164 (chain E).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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132E PRO* 3.7 35.8 - - + +
162E ILE 4.1 1.8 + - - -
163E ILE* 1.3 73.2 - - - +
165E ARG* 1.3 70.9 + - - +
166E LYS* 3.4 26.4 + - - +
167E VAL* 2.9 24.3 + - + +
168E CYS 2.8 23.7 + - - -
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Residues in contact with ARG 165 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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129E ASP* 3.3 35.8 + - - -
132E PRO* 5.2 0.6 - - - +
163E ILE 3.2 4.5 + - - -
164E ASP* 1.3 75.9 + - - +
166E LYS* 1.3 63.7 + - + +
168E CYS* 2.9 17.9 + - - +
169E ASN* 2.9 30.5 + - - +
176E ILE* 3.7 13.8 - - + +
177E GLY 3.1 18.9 + - - -
178E MET* 3.9 21.6 + - - +
180E MET 2.6 32.7 + - - -
181E VAL* 3.7 8.6 - - - +
182E CYS* 5.3 2.9 - - - +
230E LEU* 4.6 0.2 - - - +
173F PHE* 3.8 19.1 - - - +
175F VAL* 4.8 1.6 - - - -
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Residues in contact with LYS 166 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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164E ASP* 3.2 17.3 + - - +
165E ARG* 1.3 77.2 - - + +
167E VAL* 1.3 64.3 + - + +
169E ASN* 3.4 3.6 + - - +
170E ASP* 3.3 19.2 + - - +
170F ARG* 5.9 6.5 - - + -
173F PHE* 2.9 85.7 + - + +
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Residues in contact with VAL 167 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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163E ILE* 4.2 12.6 - - + -
164E ASP* 2.9 24.9 + - + +
166E LYS* 1.3 75.0 - - + +
168E CYS* 1.3 62.2 + - - +
169E ASN 3.0 5.4 - - - -
170E ASP* 3.0 27.2 - - - +
171E HIS* 2.9 40.9 - - - +
186E LEU* 4.9 8.3 - - + -
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Residues in contact with CYS 168 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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163E ILE* 4.4 4.0 - - + -
164E ASP 2.8 12.5 + - - +
165E ARG* 2.9 12.7 + - - +
167E VAL* 1.3 76.8 - - - +
169E ASN* 1.3 57.6 + - - +
171E HIS* 3.7 10.9 - - - +
172E TYR* 3.4 34.0 - - - +
176E ILE* 4.0 6.0 - - + +
182E CYS* 2.0 51.8 - - + -
225E PRO* 3.7 18.4 - - - -
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Residues in contact with ASN 169 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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165E ARG* 2.9 22.7 + - - +
166E LYS 3.9 2.0 - - - +
167E VAL 3.0 0.8 - - - -
168E CYS* 1.3 79.9 - - - +
170E ASP* 1.3 59.9 + - - +
172E TYR* 5.0 0.4 - - - -
173E ASN* 2.9 61.5 + - - +
174E PRO 4.6 0.2 + - - -
175E VAL* 3.5 21.4 - - - +
176E ILE* 3.0 48.4 - - - +
173F PHE* 3.5 18.1 - - - +
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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