Contacts of the helix formed by residues 291 - 296 (chain A) in PDB entry 6GES
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 ALA 291 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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289A LYS* 3.6 6.9 + - - +
290A VAL* 1.3 77.9 - - - +
292A TRP* 1.3 65.2 + - - +
293A ALA* 4.3 5.8 - - + +
294A LYS* 2.9 46.2 + - + +
295A LEU* 3.3 8.4 + - - +
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Residues in contact with TRP 292 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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244A ILE* 3.6 25.1 - - + -
245A PHE* 4.8 1.1 - + - -
260A ILE* 3.8 24.7 - - + -
261A LEU* 4.0 22.2 - - + -
289A LYS* 3.6 16.0 - - - +
290A VAL 3.2 4.4 + - - -
291A ALA* 1.3 71.2 - - - +
293A ALA* 1.3 57.6 + - - +
295A LEU* 3.0 11.2 + - + +
296A PHE* 2.8 42.3 + + - +
304A LEU* 4.0 27.4 - - + -
307A LEU* 3.9 17.7 - - + -
308A ASP* 2.9 48.7 + - + +
311A LEU* 3.8 31.6 - - + -
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Residues in contact with ALA 293 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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291A ALA* 3.1 6.1 - - + +
292A TRP* 1.3 78.0 - - - +
294A LYS* 1.3 58.9 + - + +
296A PHE 3.9 1.6 - - - +
297A PRO* 3.2 29.7 - - + +
304A LEU* 3.7 19.6 - - + +
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Residues in contact with LYS 294 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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290A VAL* 4.8 9.4 - - + -
291A ALA* 2.9 29.6 + - + +
293A ALA* 1.3 82.1 - - + +
295A LEU* 1.3 62.4 + - - +
296A PHE 3.6 0.2 + - - -
297A PRO* 3.8 9.6 - - - +
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Residues in contact with LEU 295 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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240A SER* 5.9 0.3 - - - -
242A ARG* 6.1 2.7 - - - +
244A ILE* 5.5 1.1 - - + -
260A ILE* 3.9 37.9 - - + -
290A VAL* 3.8 31.2 - - + +
291A ALA 3.3 3.2 + - - +
292A TRP* 3.0 22.6 + - + +
294A LYS* 1.3 78.4 - - - +
296A PHE* 1.3 80.0 + - + +
297A PRO* 3.4 7.0 - - - +
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Residues in contact with PHE 296 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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236A ALA* 3.7 28.3 - - + -
239A LEU* 4.0 17.0 - - + -
240A SER* 3.6 31.9 - - - -
244A ILE* 4.4 9.6 - - + -
292A TRP* 2.8 41.7 + + - +
293A ALA* 3.4 5.3 - - - +
295A LEU* 1.3 94.0 - - + +
297A PRO* 1.3 65.8 - - - +
298A LYS 3.1 4.3 + - - -
299A SER* 3.3 23.5 + - - +
304A LEU* 3.7 30.6 - - + +
307A LEU* 3.9 8.1 - - + -
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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