Contacts of the helix formed by residues 641 - 645 (chain D) in PDB entry 6G52
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 THR 641 (chain D).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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562D VAL* 5.4 2.2 - - - -
564D GLN* 2.9 43.1 - - - +
612D PHE* 3.9 10.8 - - - -
638D TYR* 4.5 24.9 - - - -
639D TYR 3.5 1.2 - - - -
640D GLY* 1.3 77.9 - - - +
642D MSE 1.3 61.8 + - - +
643D ALA 3.5 0.5 + - - -
644D LEU* 3.7 9.9 + - - +
645D THR 4.7 0.3 + - - -
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Residues in contact with MSE 642 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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564D GLN* 5.1 4.0 - - - +
641D THR* 1.3 75.6 - - - +
643D ALA* 1.3 65.4 + - - +
644D LEU 3.1 4.1 + - - -
645D THR* 3.2 14.2 + - - +
694D TYR* 3.5 26.5 - - + +
724G ARG* 4.4 41.3 - - + +
725G MSE 3.2 31.2 - - + +
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Residues in contact with ALA 643 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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603D TYR* 5.1 0.2 - - - +
609D ALA 4.1 8.0 - - - +
610D ASP* 4.1 13.2 - - - +
611D TYR 4.2 11.2 - - - +
640D GLY* 3.4 19.5 - - - +
641D THR 3.2 1.2 - - - -
642D MSE 1.3 82.4 - - - +
644D LEU* 1.3 61.3 + - - +
645D THR 3.7 5.7 - - - +
694D TYR* 3.6 43.1 - - + +
713D ARG* 4.9 2.8 - - - +
725G MSE 4.7 0.6 - - - +
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Residues in contact with LEU 644 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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564D GLN* 4.9 3.8 - - + +
565D PHE* 3.5 37.2 - - + -
610D ASP 4.5 2.9 - - - +
612D PHE* 3.6 26.0 - - + +
640D GLY 4.2 1.3 - - - +
641D THR 3.7 10.7 + - - +
642D MSE 3.1 0.6 - - - -
643D ALA* 1.3 75.8 - - - +
645D THR* 1.3 65.4 + - - +
711D ILE* 3.3 26.2 - - + +
712D THR 3.7 19.3 - - - +
713D ARG* 4.2 14.2 - - - +
716D TYR* 3.6 34.8 - - + -
717D GLN* 3.9 13.9 + - - -
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Residues in contact with THR 645 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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564D GLN* 5.6 7.3 - - - +
641D THR 4.7 0.8 + - - -
642D MSE 3.2 17.4 + - - -
643D ALA 3.7 7.6 - - - +
644D LEU* 1.3 83.0 - - - +
716D TYR* 4.8 4.0 - - - -
717D GLN* 4.9 9.2 - - - +
721G LEU* 6.1 5.2 - - - -
725G MSE 3.9 19.5 - - - +
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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