Contacts of the helix formed by residues 565 - 571 (chain B) in PDB entry 2XBB
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 ARG 565 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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536B GLN* 4.6 0.6 - - - +
538B ASP* 3.1 51.3 + - - +
539B ILE* 3.3 13.2 - - - +
563B VAL* 3.4 10.8 - - - +
564B LYS* 1.3 80.0 - - + +
566B ALA* 1.3 63.4 + - - +
567B ASP* 3.0 44.7 + - - +
568B PHE* 3.3 40.3 + - + -
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Residues in contact with ALA 566 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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563B VAL* 4.3 2.5 - - - -
564B LYS 3.6 4.4 + - - -
565B ARG* 1.3 70.7 - - - +
567B ASP* 1.3 65.0 + - - +
568B PHE 3.1 0.4 - - - -
569B LEU* 2.9 34.6 + - + +
570B LYS* 4.0 6.2 + - - +
640B ARG* 4.1 10.3 - - - +
758B GLU* 3.6 48.2 + - + +
759B LEU* 4.6 4.7 - - + +
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Residues in contact with ASP 567 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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536B GLN* 3.2 29.4 + - + +
539B ILE* 3.9 10.1 - - + +
565B ARG* 3.0 45.7 + - - +
566B ALA* 1.3 78.4 - - - +
568B PHE* 1.3 56.5 + - - +
570B LYS* 2.7 58.9 + - - +
571B ALA 4.1 0.7 + - - -
758B GLU 4.8 1.2 - - - +
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Residues in contact with PHE 568 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
538B ASP 5.2 0.9 - - - -
539B ILE* 3.5 28.5 - - + -
540B PRO* 3.5 30.5 - - + -
542B LYS 5.0 0.4 - - - +
543B PHE* 3.5 30.4 - + + +
563B VAL* 5.0 8.3 - - + -
565B ARG* 3.3 50.4 + - + +
566B ALA 3.1 0.6 - - - -
567B ASP* 1.3 77.6 - - - +
569B LEU* 1.3 59.6 + - - +
570B LYS 3.2 1.5 + - - -
571B ALA* 3.4 17.7 + - - +
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Residues in contact with LEU 569 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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543B PHE* 3.4 44.0 - - + -
560B ILE* 4.1 15.9 - - + -
563B VAL* 4.2 12.6 - - + -
566B ALA* 2.9 22.5 + - + +
568B PHE* 1.3 74.5 - - - +
570B LYS* 1.3 59.1 + - - +
571B ALA 3.2 4.1 + - - +
573B LEU* 4.1 5.4 - - - +
640B ARG* 3.9 35.0 - - - +
644B MET* 4.2 30.2 - - + +
648B HIS* 2.9 21.7 + - - -
759B LEU* 4.2 10.2 - - + +
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Residues in contact with LYS 570 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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534B LYS 4.3 5.6 - - - +
536B GLN* 3.9 25.9 - - + +
539B ILE* 5.5 0.9 - - + -
566B ALA 4.4 2.6 + - - +
567B ASP* 2.7 44.9 + - - +
569B LEU* 1.3 77.4 - - - +
571B ALA* 1.3 64.8 + - - +
572B ARG 3.8 0.7 + - - -
647B TYR* 3.3 58.3 - - + +
648B HIS* 3.1 13.2 - - - -
758B GLU 3.6 18.0 + - - -
759B LEU* 3.7 22.4 - - + +
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Residues in contact with ALA 571 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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539B ILE* 4.2 8.4 - - + +
540B PRO* 3.4 26.2 - - + +
541B ASN 4.0 0.7 - - - -
542B LYS 3.4 23.8 - - - +
543B PHE* 4.1 1.7 - - - +
567B ASP 4.1 1.0 + - - -
568B PHE* 3.4 14.9 + - - +
569B LEU 3.2 1.7 - - - +
570B LYS* 1.3 83.9 - - - +
572B ARG* 1.3 66.6 + - - +
573B LEU* 3.1 11.8 + - - +
648B HIS* 3.3 7.7 - - - -
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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