Contacts of the helix formed by residues 152 - 157 (chain B) in PDB entry 2OQ4
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 GLN 152 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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150B ASN 3.6 3.2 + - - -
151B ARG* 1.3 73.7 + - - +
153B PHE* 1.3 55.4 + - - +
154B ALA* 2.5 32.0 + - + +
155B GLY 3.2 10.1 + - - +
156B LEU* 3.4 7.5 + - - +
182B GLY 4.2 0.7 - - - +
183B ASN* 2.9 41.3 - - + +
184B HIS 3.8 4.9 - - - +
185B LYS* 4.4 20.3 - - + -
249B LEU* 5.9 3.1 - - - +
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Residues in contact with PHE 153 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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143B LEU* 5.2 0.9 - - + -
151B ARG 3.9 4.5 - - - -
152B GLN* 1.3 68.1 - - - +
154B ALA* 1.3 61.7 + - - +
155B GLY 3.5 0.4 - - - -
156B LEU* 4.1 19.5 - - + -
157B LEU* 3.0 46.4 + - + +
175B LEU* 4.5 15.5 - - + -
180B LEU* 3.8 25.1 - - + -
181B THR 4.6 2.0 - - - +
182B GLY* 3.5 7.8 + - - +
184B HIS* 2.8 46.3 + - + -
185B LYS 3.4 3.8 - - - -
186B ALA* 2.9 49.8 - - + -
189B LEU* 4.1 7.0 - - + -
197B LEU* 3.8 22.9 - - + -
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Residues in contact with ALA 154 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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152B GLN* 2.5 26.5 + - + +
153B PHE* 1.3 77.8 - - - +
155B GLY* 1.3 60.0 + - - +
157B LEU 4.5 0.5 + - - -
158B LEU* 4.0 3.5 - - - +
171B ARG* 2.7 36.4 + - - +
182B GLY* 3.2 23.5 + - - +
249B LEU* 4.4 12.3 - - + -
250B SER* 3.8 15.7 - - - +
254B PHE* 5.2 1.1 - - - -
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Residues in contact with GLY 155 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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151B ARG* 4.6 7.4 - - - -
152B GLN* 3.2 3.4 + - - +
154B ALA* 1.3 78.5 - - - +
156B LEU* 1.3 56.4 + - - +
157B LEU 3.2 2.9 - - - -
158B LEU* 2.8 32.5 + - - +
159B ASP* 2.9 13.2 + - - +
250B SER* 4.4 7.8 + - - -
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Residues in contact with LEU 156 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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143B LEU* 4.5 6.1 - - + -
148B PHE* 3.4 46.2 - - + +
151B ARG* 3.6 28.9 - - + +
152B GLN 3.4 14.4 + - - +
153B PHE* 4.2 23.1 - - + -
154B ALA 3.6 0.2 - - - -
155B GLY* 1.3 75.2 - - - +
157B LEU* 1.3 61.0 + - + +
159B ASP* 2.9 31.2 + - + +
162B PHE* 3.3 47.4 - - + -
166B LEU* 5.3 0.5 - - - +
186B ALA* 5.3 0.4 - - + -
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Residues in contact with LEU 157 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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153B PHE* 3.0 29.8 + - + +
154B ALA 4.8 0.4 - - - +
155B GLY 3.2 0.8 + - - -
156B LEU* 1.3 78.5 - - + +
158B LEU* 1.3 61.2 + - + +
159B ASP 4.8 1.0 - - - +
162B PHE* 5.5 3.8 - - + -
166B LEU* 3.1 43.8 - - + +
167B GLY 4.4 0.5 - - - +
171B ARG* 3.5 46.7 - - + +
174B ILE* 4.5 7.4 - - + -
175B LEU* 3.9 23.3 - - + -
197B LEU* 5.2 2.5 - - + -
201B LEU* 3.4 33.2 - - + -
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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