Contacts of the helix formed by residues 158 - 164 (chain B) in PDB entry 5I2Y
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 THR 158 (chain B).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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141B GLY* 4.9 1.8 - - - +
156B LEU* 4.2 7.9 - - + +
157B VAL* 1.3 75.6 - - - +
159B ARG* 1.3 58.9 + - - +
160B GLU* 3.6 5.2 - - - +
161B ALA* 2.9 30.8 + - - +
162B LEU* 3.2 11.3 + - - +
205B GLN* 3.5 38.4 - - + +
206B VAL 3.2 11.0 + - - +
207B ASP* 2.9 26.1 + - - +
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Residues in contact with ARG 159 (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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124B ALA* 4.1 5.4 - - - +
125B GLU* 3.2 55.0 + - - +
140B VAL* 3.4 29.5 + - - +
141B GLY* 4.4 8.1 - - - +
157B VAL 4.0 0.6 + - - -
158B THR* 1.3 68.6 - - - +
160B GLU* 1.3 68.3 + - - +
162B LEU* 3.1 21.7 + - - +
163B ASP* 3.0 44.1 + - - +
172B PHE* 3.8 16.0 - - - -
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Residues in contact with GLU 160 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
158B THR* 3.6 8.7 - - - +
159B ARG* 1.3 79.3 - - - +
161B ALA* 1.3 63.7 + - - +
163B ASP* 3.0 15.3 + - - +
164B THR* 3.0 23.8 + - + +
207B ASP* 3.0 36.2 - - - +
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Residues in contact with ALA 161 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
157B VAL* 3.8 12.6 - - + -
158B THR* 2.9 11.6 + - - +
160B GLU* 1.3 80.1 - - - +
162B LEU* 1.3 60.0 + - - +
164B THR* 3.8 8.7 + - - +
165B SER* 3.5 17.5 + - - -
206B VAL 3.5 12.6 - - - +
207B ASP 3.3 32.8 - - - +
208B ARG* 3.6 7.8 - - - +
209B PHE* 3.6 12.8 + - + -
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Residues in contact with LEU 162 (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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124B ALA* 3.7 27.1 - - + -
141B GLY* 4.2 12.8 - - - -
142B ALA* 4.5 1.6 - - + +
157B VAL* 4.3 7.2 - - + +
158B THR 3.2 12.1 + - - +
159B ARG* 3.1 29.7 + - - +
161B ALA* 1.3 75.4 - - - +
163B ASP* 1.3 68.0 + - - +
165B SER* 3.2 16.3 + - - +
167B TRP* 4.5 8.5 + - + +
172B PHE* 4.2 35.8 - - + -
174B PHE* 4.1 25.6 - - + -
209B PHE* 4.2 11.9 - - + -
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Residues in contact with ASP 163 (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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159B ARG* 3.0 34.6 + - - +
160B GLU* 3.0 9.0 + - - +
162B LEU* 1.3 82.0 - - - +
164B THR* 1.3 63.8 + - + +
165B SER 3.2 9.0 + - - +
172B PHE* 5.7 2.5 - - - -
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Residues in contact with THR 164 (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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160B GLU* 3.0 25.2 + - + +
161B ALA* 3.8 7.5 + - - +
162B LEU 3.5 0.2 - - - -
163B ASP* 1.3 78.4 - - + +
165B SER* 1.3 60.7 + - - +
207B ASP 4.8 2.9 + - - -
208B ARG* 4.3 24.3 + - - +
209B PHE 5.2 0.2 - - - +
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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