Contacts of the helix formed by residues 552 - 559 (chain E) in PDB entry 2VKX
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 ALA 552 (chain E).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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530E ILE* 3.3 35.9 - - + +
531E LEU 3.0 28.5 + - - +
532E LYS 3.9 0.7 - - - +
533E TYR* 3.8 19.0 - - + -
550E TYR 3.2 2.0 + - - -
551E ASP* 1.3 71.6 - - - +
553E LYS* 1.3 63.7 + - - +
555E ALA* 3.1 3.8 + - - +
556E SER* 3.0 24.4 + - - -
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Residues in contact with LYS 553 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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530E ILE 5.9 1.0 + - - -
531E LEU 4.7 0.2 + - - -
551E ASP* 3.3 14.6 + - - +
552E ALA* 1.3 80.0 - - - +
554E GLU* 1.3 61.8 + - - +
555E ALA 3.2 0.2 + - - -
556E SER* 3.3 7.0 + - - -
557E MET* 3.1 39.3 + - + +
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Residues in contact with GLU 554 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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551E ASP* 2.9 25.5 + - + +
552E ALA 3.3 0.2 - - - -
553E LYS* 1.3 76.1 - - - +
555E ALA* 1.3 57.4 + - - +
557E MET* 4.0 3.1 - - - +
558E GLU* 3.0 47.4 + - - +
548F LYS* 3.3 25.1 - - - +
549F TRP 3.9 1.6 - - - +
550F TYR* 3.5 17.8 - - - +
551F ASP* 3.5 28.4 + - - +
554F GLU* 3.5 26.7 - - - +
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Residues in contact with ALA 555 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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519E PHE* 4.2 15.1 - - + -
533E TYR* 4.3 6.5 - - + -
550E TYR* 5.2 1.8 - - + -
551E ASP 3.1 16.9 + - - +
552E ALA 3.1 5.6 + - - +
553E LYS 3.1 0.6 - - - -
554E GLU* 1.3 76.7 - - - +
556E SER* 1.3 55.9 + - - +
557E MET 3.2 0.4 - - - -
558E GLU* 4.5 0.4 - - - -
559E GLY* 2.6 37.1 + - - -
560E ILE 4.2 7.4 - - - -
561E VAL* 4.0 26.2 - - + -
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Residues in contact with SER 556 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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521E GLU* 3.7 27.6 + - - -
533E TYR* 5.7 1.1 - - - -
552E ALA 3.0 14.8 + - - -
553E LYS* 3.3 6.5 + - - -
555E ALA* 1.3 77.8 - - - +
557E MET* 1.3 62.7 + - - +
559E GLY* 3.9 7.1 + - - -
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Residues in contact with MET 557 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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553E LYS* 3.1 33.6 + - + +
554E GLU* 4.0 1.6 - - - +
556E SER* 1.3 79.1 - - - +
558E GLU* 1.3 63.0 + - - +
547F SER 5.6 2.5 - - - +
548F LYS* 3.4 43.7 - - + -
549F TRP 5.8 0.2 - - - +
564F VAL* 3.9 9.5 - - - +
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Residues in contact with GLU 558 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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554E GLU* 3.0 43.0 + - - +
557E MET* 1.3 76.4 - - - +
559E GLY* 1.3 59.1 + - - +
560E ILE* 3.2 40.1 + - + +
561E VAL* 5.8 0.2 - - - -
562E THR* 5.0 1.0 + - - -
548F LYS* 4.5 11.2 - - - +
550F TYR* 3.7 11.5 - - + +
562F THR* 3.7 34.8 + - - +
564F VAL* 3.3 31.4 - - + +
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Residues in contact with GLY 559 (chain E).
Click here for Legend to table.
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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518E GLN* 4.0 14.2 - - - +
519E PHE* 4.4 13.9 + - - +
555E ALA 2.6 21.2 + - - +
556E SER* 4.3 7.4 - - - -
557E MET 3.5 1.2 - - - -
558E GLU* 1.3 73.2 - - - +
560E ILE* 1.3 63.7 + - - +
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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