Contacts of the helix formed by residues 513 - 518 (chain F) in PDB entry 1XFV
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 513 (chain F).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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505F LYS* 3.3 24.2 - - - -
508F ILE* 3.5 35.9 - - + +
509F PRO 3.4 7.5 + - - +
510F GLN* 4.8 10.8 - - - +
512F GLU* 1.3 77.8 - - - +
514F ASP* 1.3 63.8 + - - +
516F VAL* 3.9 2.9 + - - +
517F VAL* 3.5 29.7 + - + +
529F VAL* 4.7 14.3 - - + +
532F LEU* 3.4 32.9 - - + +
109T MET* 5.7 0.2 - - + -
112T LEU* 2.8 32.3 + - + +
113T GLY 3.2 26.9 - - - -
114T GLU* 3.4 30.3 - - + -
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Residues in contact with ASP 514 (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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510F GLN* 3.0 26.1 + - - +
511F LYS* 3.4 8.0 - - - +
512F GLU 2.9 0.6 - - - -
513F TRP* 1.3 82.2 - - - +
515F LYS* 1.3 54.9 + - - +
516F VAL 2.7 16.0 + - - -
517F VAL* 3.4 19.1 + - - +
518F ASN* 3.5 25.5 + - - -
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Residues in contact with LYS 515 (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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511F LYS 2.7 20.1 + - - +
512F GLU* 2.8 40.5 + - - +
514F ASP* 1.3 70.8 - - - +
516F VAL* 1.3 74.9 + - - +
518F ASN* 4.7 11.4 + - - +
519F THR* 5.2 1.9 + - - -
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Residues in contact with VAL 516 (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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512F GLU 3.2 8.0 + - - +
513F TRP 4.3 5.4 - - - +
514F ASP 2.7 8.5 + - - -
515F LYS* 1.3 106.6 - - - +
517F VAL* 1.3 58.0 + - + +
518F ASN 3.1 5.5 + - - -
519F THR* 2.9 34.4 + - + +
524F GLU 5.4 0.2 - - - +
525F LYS* 4.6 2.6 - - - +
528F GLY* 3.9 33.9 - - - +
529F VAL* 4.1 10.1 - - + +
532F LEU* 3.9 21.8 - - + -
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Residues in contact with VAL 517 (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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513F TRP* 3.5 38.4 - - + +
514F ASP* 3.7 14.4 - - - +
516F VAL* 1.3 76.7 - - + +
518F ASN* 1.3 77.1 + - - +
519F THR* 3.2 5.7 + - - +
525F LYS* 3.0 33.0 + - - +
529F VAL* 5.0 7.0 - - + -
114T GLU* 3.3 23.3 - - + +
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Residues in contact with ASN 518 (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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514F ASP* 3.5 21.0 + - - +
515F LYS* 4.8 7.3 - - - +
516F VAL 3.1 1.9 - - - -
517F VAL* 1.3 93.4 + - - +
519F THR* 1.3 68.4 + - - +
520F PRO* 3.2 6.6 - - - +
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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