Contacts of the helix formed by residues 333 - 338 (chain A) in PDB entry 1EU0
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 LEU 333 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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315A HIS* 5.1 8.5 - - + +
316A LEU* 5.2 5.2 - - + -
319A GLN* 3.8 38.2 - - + +
326A LEU* 3.4 61.1 - - + +
329A GLN 4.4 1.6 - - - +
330A GLU* 4.0 21.1 - - + -
331A GLY 4.0 8.1 - - - +
332A GLN* 1.3 76.7 - - - +
334A GLU* 1.4 59.9 + - - +
336A LEU* 3.9 3.8 + - + -
337A GLU* 3.3 19.2 + - - +
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Residues in contact with GLU 334 (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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319A GLN* 3.0 36.0 + - + +
320A GLU 6.1 0.4 - - - +
332A GLN* 3.6 16.1 + - - +
333A LEU* 1.4 76.4 - - - +
335A GLN* 1.4 60.9 + - + +
337A GLU* 3.5 6.7 + - - +
338A GLU* 3.1 28.4 + - - +
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Residues in contact with GLN 335 (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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332A GLN* 3.2 28.1 + - + +
334A GLU* 1.4 75.4 - - + +
336A LEU* 1.3 61.7 + - - +
338A GLU* 3.2 28.4 + - - +
339A GLN* 2.9 47.4 + - - +
353A LEU* 4.6 16.3 - - + +
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Residues in contact with LEU 336 (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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326A LEU* 5.0 5.6 - - + -
329A GLN 3.6 25.4 - - - +
330A GLU 4.0 2.7 - - - -
331A GLY* 3.7 24.9 - - - +
332A GLN 3.3 19.3 + - - +
333A LEU* 4.2 7.9 - - + +
334A GLU 3.6 0.2 - - - -
335A GLN* 1.3 73.4 - - - +
337A GLU* 1.4 59.6 + - - +
339A GLN 3.2 13.5 - - - +
340A GLU* 3.5 6.4 - - - +
343A LEU* 3.4 56.2 - - + +
346A LEU* 4.2 8.7 - - + -
347A GLU* 4.1 21.8 - - + +
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Residues in contact with GLU 337 (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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320A GLU 3.8 21.0 - - - +
321A GLY* 3.9 19.7 - - - -
322A GLN* 4.4 10.7 + - + +
326A LEU* 4.3 10.4 - - + +
333A LEU 3.3 19.0 + - - +
334A GLU* 3.6 6.7 - - - +
335A GLN 3.4 0.4 - - - -
336A LEU* 1.4 73.8 - - - +
338A GLU* 1.4 62.4 + - - +
340A GLU* 2.9 40.8 - - - +
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Residues in contact with GLU 338 (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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334A GLU 3.1 17.0 + - - +
335A GLN* 3.2 27.6 + - - +
336A LEU 3.7 0.2 - - - -
337A GLU* 1.4 80.1 + - - +
339A GLN* 1.4 70.8 + - - +
340A GLU* 3.4 12.7 + - - +
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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