Contacts of the helix formed by residues 225 - 231 (chain B) in PDB entry 3GYQ
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 SER 225 (chain B).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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122B ASP* 3.0 15.2 + - - -
178B ARG* 3.6 22.0 + - - -
224B PRO* 1.3 76.2 - - - +
226B ASP* 1.3 58.8 + - - +
227B LEU* 2.9 31.3 + - - +
228B PHE* 2.9 27.8 + - - +
229B GLU 4.2 0.5 + - - -
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Residues in contact with ASP 226 (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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222B GLY 4.4 8.4 - - - +
224B PRO 3.2 6.2 + - - +
225B SER* 1.3 72.2 + - - +
227B LEU* 1.3 60.2 + - + +
228B PHE 3.0 1.1 - - - -
229B GLU* 3.0 41.5 + - + +
230B GLU 4.4 0.2 + - - -
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Residues in contact with LEU 227 (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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178B ARG* 4.4 18.4 - - - +
182B ILE* 4.2 11.7 - - - +
225B SER* 2.9 19.0 - - - +
226B ASP* 1.3 82.6 - - + +
228B PHE* 1.3 59.7 + - - +
229B GLU 3.2 0.4 + - - -
230B GLU* 3.8 16.1 + - - +
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Residues in contact with PHE 228 (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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120B VAL* 4.7 6.7 - - + -
122B ASP* 3.1 39.9 - - + -
148B VAL* 4.6 14.8 - - + -
178B ARG* 3.5 31.6 - - + -
181B ALA* 5.1 1.8 - - + -
182B ILE* 3.6 31.2 - - + -
185B ILE* 5.4 3.6 - - + -
192B LEU* 4.1 13.3 - - + +
194B THR* 5.3 1.6 - - + +
216B LEU* 3.4 42.4 - - + -
224B PRO* 4.4 1.6 - - + -
225B SER 2.9 15.1 + - - +
227B LEU* 1.3 74.9 - - - +
229B GLU* 1.3 64.2 + - - +
230B GLU 3.1 2.9 - - - -
231B ALA* 3.0 8.4 + - - +
232B SER* 2.9 21.0 + - - -
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Residues in contact with GLU 229 (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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194B THR* 4.7 12.0 + - - +
225B SER 4.2 0.4 + - - +
226B ASP* 3.0 31.6 + - + +
228B PHE* 1.3 77.9 - - - +
230B GLU* 1.3 63.3 + - - +
232B SER* 3.2 31.6 + - - +
235B SER* 5.2 7.6 - - - -
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Residues in contact with GLU 230 (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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182B ILE* 6.2 0.7 - - + -
226B ASP 4.4 0.4 + - - -
227B LEU 3.8 13.7 + - - +
228B PHE 3.0 0.2 + - - -
229B GLU* 1.3 81.5 - - - +
231B ALA* 1.3 60.1 + - - +
232B SER 4.0 3.3 - - - +
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Residues in contact with ALA 231 (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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182B ILE* 3.6 36.8 - - + +
185B ILE* 6.3 1.6 - - + -
186B ARG* 5.9 3.8 - - + -
192B LEU* 3.6 26.0 + - + +
227B LEU 4.8 0.2 + - - -
228B PHE 3.0 5.5 + - - +
230B GLU* 1.3 79.3 - - - +
232B SER* 1.3 64.9 + - - +
233B SER* 3.3 4.3 + - - -
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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