Contacts of the helix formed by residues 367 - 371 (chain A) in PDB entry 4OQT
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 GLU 367 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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352A ARG 5.0 6.1 - - - +
354A GLN* 3.8 23.7 + - + +
355A PRO 3.5 5.8 - - - -
356A THR* 3.6 24.8 + - + +
365A GLY 3.3 3.1 + - - +
366A LYS* 1.3 78.0 - - - +
368A PHE* 1.3 67.2 + - - +
369A LYS* 3.2 34.5 + - + +
370A ASP* 3.0 33.1 + - - +
371A PHE* 4.0 4.5 + - - -
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Residues in contact with PHE 368 (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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327A LEU* 6.2 0.2 - - + -
332A LEU* 4.6 3.4 - - + -
334A CYS* 3.9 21.8 - - - -
338A LEU* 4.3 18.4 - - + -
341A VAL* 3.8 25.1 - - + -
342A PHE* 3.9 31.6 - + + -
345A ARG* 3.3 22.7 + - + -
350A PHE* 4.6 4.7 - + - -
354A GLN* 3.8 10.0 + - - +
355A PRO* 3.2 48.4 + - + +
357A CYS* 4.1 7.4 - - - -
367A GLU* 1.3 74.9 - - - +
369A LYS* 1.3 63.8 + - - +
370A ASP 3.0 1.0 + - - -
371A PHE* 3.1 21.6 + + - +
380A PHE* 3.8 22.7 - + - -
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Residues in contact with LYS 369 (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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345A ARG* 3.7 10.8 + - - +
346A TRP* 4.1 21.5 - - + -
351A ASN 5.7 0.2 + - - -
352A ARG* 5.0 18.8 + - - +
354A GLN* 2.9 38.3 + - + +
367A GLU* 3.2 23.7 + - - +
368A PHE* 1.3 76.1 - - - +
370A ASP* 1.3 80.7 + - - +
371A PHE 3.3 8.8 + - - +
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Residues in contact with ASP 370 (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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366A LYS* 4.1 11.5 - - + -
367A GLU* 3.0 40.8 + - - +
369A LYS* 1.3 95.4 - - - +
371A PHE* 1.3 61.5 + - - +
372A PRO* 3.8 2.1 - - - +
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Residues in contact with PHE 371 (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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342A PHE* 3.7 17.9 - + + -
345A ARG* 2.7 27.9 + - - -
357A CYS* 3.7 24.5 - - - -
363A VAL* 4.0 23.6 - - + -
366A LYS* 3.6 26.7 - - + -
367A GLU 4.5 1.6 - - - -
368A PHE* 3.1 19.8 + - - +
369A LYS 3.4 4.2 - - - +
370A ASP* 1.3 80.9 - - - +
372A PRO* 1.3 68.8 - - + +
375A LEU* 4.9 3.6 - - + -
379A TYR* 4.4 18.2 - + - -
380A PHE* 3.6 40.4 - + - -
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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