Contacts of the helix formed by residues 821 - 827 (chain B) in PDB entry 2VF7
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 821 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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496B PRO* 4.0 23.6 - - + -
800B ASP 3.9 16.2 - - - +
801B TRP* 3.6 10.7 - - + -
820B GLY* 1.3 78.2 - - - +
822B PRO* 1.3 74.5 - - - +
823B ALA* 3.6 8.3 + - - +
824B GLU* 3.0 46.0 + - - +
825B VAL* 3.1 8.7 + - - +
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Residues in contact with PRO 822 (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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496B PRO* 4.8 4.9 - - + -
796B VAL 3.2 27.6 - - - +
797B ALA 4.2 9.9 - - - +
799B SER 3.4 28.3 - - - +
800B ASP 4.3 3.4 - - - -
802B VAL* 3.9 16.6 - - + -
821B THR* 1.3 86.9 - - - +
823B ALA* 1.3 51.8 + - - +
825B VAL* 3.2 2.0 + - + +
826B ALA* 2.7 35.3 + - - +
837B LEU* 3.7 20.1 - - + +
841B LEU* 4.1 10.5 - - + -
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Residues in contact with ALA 823 (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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821B THR* 3.3 7.5 + - - +
822B PRO* 1.3 78.3 - - - +
824B GLU* 1.3 64.6 + - + +
826B ALA* 3.5 12.5 + - - +
827B GLN* 3.6 9.5 + - - +
841B LEU* 4.1 15.3 - - + +
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Residues in contact with GLU 824 (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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801B TRP* 4.6 8.4 - - - -
819B GLN 4.2 4.9 - - - +
820B GLY* 3.5 17.9 - - - -
821B THR* 3.0 36.7 + - - +
823B ALA* 1.3 78.6 - - + +
825B VAL* 1.3 60.9 + - - +
827B GLN* 3.4 14.0 + - - +
828B ALA* 3.8 7.8 + - - +
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Residues in contact with VAL 825 (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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802B VAL* 4.2 13.7 - - + -
804B ASP* 4.5 9.4 - - + +
818B ALA* 3.9 19.5 - - + -
819B GLN* 3.7 15.5 - - - +
820B GLY 3.6 30.3 - - - +
821B THR 3.1 9.0 + - - +
822B PRO 3.9 4.7 - - - +
824B GLU* 1.3 71.9 - - - +
826B ALA* 1.3 64.3 + - - +
827B GLN 2.9 7.2 + - - -
828B ALA* 3.0 16.5 + - - +
831B SER* 4.5 9.4 - - - +
833B THR* 5.1 3.8 - - - +
834B ALA* 3.4 10.5 - - + +
837B LEU* 4.3 15.7 - - + -
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Residues in contact with ALA 826 (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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822B PRO 2.7 22.0 + - - +
823B ALA* 3.5 8.7 - - - +
824B GLU 3.4 0.4 - - - -
825B VAL* 1.3 70.7 - - - +
827B GLN* 1.3 59.6 + - + +
834B ALA* 3.7 14.2 - - - +
837B LEU* 4.1 6.0 - - + +
838B ARG* 2.9 49.0 + - + +
841B LEU* 3.8 21.3 - - + -
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Residues in contact with GLN 827 (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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823B ALA 3.6 7.7 + - - +
824B GLU* 3.4 11.1 + - - +
825B VAL 2.9 1.4 - - - -
826B ALA* 1.3 82.7 - - - +
828B ALA* 1.3 63.5 + - - +
829B ALA* 3.7 2.1 + - - +
838B ARG* 3.9 31.1 + - - +
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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