Contacts of the strand formed by residues 508 - 511 (chain F) in PDB entry 1XSK
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 TRP 508 (chain F).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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167F GLU* 3.0 27.7 + - - -
169F PHE* 5.8 1.6 - + - -
477F VAL* 5.0 0.7 - - - -
478F HIS 3.5 18.2 - - - +
480F GLY* 3.7 10.1 - - - -
493F SER* 3.2 39.3 - - - -
494F LEU* 4.3 1.1 - - - -
496F GLY* 4.7 0.4 - - - -
497F GLY* 3.4 23.2 - - - +
500F ILE* 3.9 24.9 - - + -
507F PHE* 1.3 76.3 - - - +
509F SER* 1.3 74.3 + - - +
510F HIS* 3.4 42.0 - + + -
530F PHE* 4.1 5.8 - + - -
534F SER* 4.5 1.6 - - - -
535F SER* 3.1 22.3 + - - -
536F HIS* 3.6 8.8 + - - +
588F MET* 3.9 30.6 - - + +
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Residues in contact with SER 509 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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464F PHE* 3.4 30.0 - - - -
477F VAL* 4.2 6.0 - - - +
478F HIS 3.0 9.3 + - - -
479F TRP* 4.3 1.6 - - - -
480F GLY 2.9 22.8 + - - -
508F TRP* 1.3 83.3 - - - +
510F HIS* 1.3 83.5 + - - +
536F HIS* 2.8 35.1 + - - -
537F SER* 4.0 2.1 + - - -
538F ARG 4.2 0.3 + - - -
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Residues in contact with HIS 510 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
479F TRP* 3.8 8.5 - - - +
480F GLY* 4.4 4.0 - - - +
493F SER* 5.0 6.2 - - - -
508F TRP* 3.4 30.5 - + + -
509F SER* 1.3 93.6 + - - +
511F ASP* 1.3 68.0 + - - +
512F ILE* 3.7 2.2 + - + +
527F TRP* 3.5 21.9 + - + +
530F PHE* 3.3 37.9 - + - -
531F GLY* 3.7 20.2 - - - -
534F SER* 2.9 27.6 + - - -
536F HIS 4.3 2.9 - - - +
537F SER* 5.1 0.2 - - - -
538F ARG* 3.5 15.1 + - - +
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Residues in contact with ASP 511 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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479F TRP* 2.6 39.3 + - - +
481F GLY 4.9 1.5 + - - +
483F CYS* 4.4 6.8 - - - -
510F HIS* 1.3 76.2 - - - +
512F ILE* 1.3 60.1 + - - +
513F GLY 3.1 0.7 + - - -
514F GLY* 2.8 21.8 + - - -
515F PHE* 3.8 16.4 - - + +
527F TRP* 3.3 14.9 + - - -
538F ARG* 3.3 20.4 + - - +
540F HIS* 2.9 49.6 - - + +
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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