Contacts of the helix formed by residues 227 - 231 (chain B) in PDB entry 1PJS
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 227 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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234A LYS* 5.0 6.4 + - - +
223B ALA 4.7 1.4 - - - +
226B GLY* 1.3 73.1 + - - +
228B ALA* 1.3 67.5 + - - +
229B GLY* 2.8 28.7 + - - -
230B LEU* 2.8 38.4 + - + +
231B LEU 3.9 2.1 + - - -
254B ASP* 6.0 0.7 - - - -
255B ILE* 4.1 2.8 - - - +
339B TYR* 2.8 24.1 + - - -
412B THR* 3.3 28.2 + - - +
413B SER* 5.4 1.3 - - - +
454B PHE* 5.9 0.5 - - - -
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Residues in contact with ALA 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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233A LEU* 3.9 10.7 - - + +
226B GLY 3.1 4.8 + - - -
227B ASP* 1.3 74.1 + - - +
229B GLY* 1.3 61.3 + - - +
230B LEU 3.3 0.9 + - - -
231B LEU* 3.3 19.4 + - - +
254B ASP* 3.8 31.9 + - + +
255B ILE* 3.3 18.8 - - + -
258B LEU* 4.3 13.1 - - + +
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Residues in contact with GLY 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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232A THR* 3.3 3.1 - - - -
233A LEU* 3.2 15.3 + - - -
234A LYS* 3.0 39.5 + - - +
227B ASP* 2.8 14.6 + - - -
228B ALA* 1.3 79.7 - - - +
230B LEU* 1.3 60.1 + - - +
231B LEU 3.2 1.6 - - - -
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Residues in contact with LEU 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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232A THR* 3.6 10.2 - - + +
234A LYS* 4.7 4.3 - - + -
327A VAL* 4.6 13.0 - - + -
328A PRO* 4.0 25.8 - - + -
223B ALA 4.4 4.0 - - - +
224B GLY* 4.7 1.6 - - - -
225B PRO* 4.1 14.1 - - + -
227B ASP* 2.8 33.6 + - + +
229B GLY* 1.3 81.8 - - - +
231B LEU* 1.3 65.4 + - - +
232B THR* 3.6 2.4 + - - +
329B GLY* 5.6 0.3 - - - -
330B ILE* 3.6 29.4 + - + +
339B TYR* 3.4 25.8 - - + +
412B THR* 3.6 24.7 - - + +
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Residues in contact with LEU 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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232A THR* 3.2 1.6 - - - -
233A LEU* 3.0 28.0 + - + +
221B VAL* 4.3 1.1 - - + -
222B GLY 3.7 19.5 - - - +
223B ALA* 4.0 17.4 + - + +
227B ASP 3.9 2.2 + - - -
228B ALA 3.3 13.8 + - - +
229B GLY 3.2 0.2 - - - -
230B LEU* 1.3 82.1 - - - +
232B THR* 1.3 71.4 + - - +
235B GLY* 4.2 9.6 - - - -
236B LEU* 3.8 28.3 - - + +
239B ILE* 4.1 24.9 - - + -
255B ILE* 3.9 14.6 - - + -
258B LEU* 4.2 22.2 - - + -
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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