Contacts of the helix formed by residues 727 - 731 (chain A) 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 PRO 727 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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598A PRO* 3.7 23.8 - - + +
600A SER 3.5 8.7 - - - +
649A TRP* 3.4 41.7 - - + -
671A ARG* 4.1 7.2 - - - +
725A GLY 3.1 5.5 - - - +
726A GLN* 1.4 87.3 - - + +
728A ALA* 1.3 63.2 + - - +
729A THR* 4.0 8.1 - - - +
730A GLU* 3.3 41.2 + - + +
731A LEU* 3.9 5.5 - - - +
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Residues in contact with ALA 728 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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593A PRO* 5.1 6.1 - - - +
594A ILE* 3.6 31.2 - - + +
595A GLY 3.7 20.9 - - - +
597A THR 4.1 4.9 + - - +
600A SER* 3.0 22.9 + - - +
727A PRO* 1.3 68.4 - - - +
729A THR* 1.3 61.7 + - - +
730A GLU 3.1 5.6 - - - -
731A LEU* 3.2 30.2 + - - +
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Residues in contact with THR 729 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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101A ARG* 3.8 5.2 - - - +
102A GLY* 3.3 43.8 + - - +
595A GLY 5.2 0.7 - - - +
596A ARG 3.4 28.5 - - - +
597A THR* 3.8 16.6 + - - -
598A PRO* 3.7 18.2 - - - +
661A TYR* 4.1 20.4 - - + +
727A PRO* 4.0 7.4 - - - +
728A ALA* 1.3 75.8 - - - +
730A GLU* 1.3 60.8 + - - +
731A LEU 3.3 2.4 + - - -
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Residues in contact with GLU 730 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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101A ARG* 3.7 17.1 + - - -
649A TRP* 3.8 26.0 + - - -
723A ARG* 4.1 6.7 + - - -
726A GLN* 3.2 34.7 + - - +
727A PRO* 3.5 27.1 - - + +
728A ALA 3.1 0.8 - - - -
729A THR* 1.3 80.7 - - - +
731A LEU* 1.3 62.3 + - - +
735A GLU* 4.2 2.4 - - - +
902A ADP 3.2 47.5 + - + +
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Residues in contact with LEU 731 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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101A ARG* 3.8 19.0 - - - +
593A PRO* 6.1 0.7 - - - +
594A ILE* 4.7 9.6 - - + -
602A MET* 5.7 2.2 - - + +
722A LEU* 4.0 14.4 - - + -
726A GLN* 3.8 33.9 - - + +
727A PRO 3.9 11.7 - - - +
728A ALA* 3.2 24.4 + - - +
729A THR 3.3 0.8 - - - -
730A GLU* 1.3 85.5 - - - +
732A SER* 1.3 68.7 + - - +
735A GLU* 3.5 19.1 - - + +
736A ALA* 5.0 7.0 - - + +
739A ILE* 3.7 30.5 - - + -
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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