Contacts of the helix formed by residues 801 - 805 (chain C) in PDB entry 7CN9
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 ASN 801 (chain C).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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795C LYS* 5.2 1.6 + - - +
800C PHE* 1.3 74.7 - - - +
802C PHE* 1.3 60.2 + - - +
803C SER* 2.1 32.9 + - - -
804C GLN* 4.3 3.6 + - - +
927C PHE* 5.8 0.8 - - - -
928C ASN* 2.9 21.8 + - + +
931C ILE* 4.5 18.3 - - - +
1p NAG 1.2 91.1 + - + +
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Residues in contact with PHE 802 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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795C LYS* 4.5 6.4 - - - +
797C PHE* 3.3 28.3 - + - -
800C PHE* 3.4 41.6 - + + -
801C ASN* 1.3 72.3 - - - +
803C SER* 1.3 51.7 + - - +
804C GLN* 3.1 3.4 - - - -
805C ILE* 2.5 36.2 + - + -
806C LEU* 2.3 69.2 + - + -
882C ILE* 3.6 21.1 - - + -
898C PHE* 4.2 15.9 - + - -
927C PHE* 4.2 13.7 - + - -
931C ILE* 5.7 3.6 - - + -
1052C PHE* 5.0 8.7 - + - -
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Residues in contact with SER 803 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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795C LYS* 3.9 21.2 - - - +
801C ASN* 2.1 29.2 + - - -
802C PHE* 1.3 76.1 - - - +
804C GLN* 1.3 61.2 + - - +
805C ILE 2.9 1.9 + - - -
806C LEU 3.4 15.0 - - - +
808C ASP* 5.6 6.0 - - - +
816C SER* 4.7 3.8 - - - -
817C PHE* 4.8 3.6 - - - +
1p NAG 2.7 35.8 + - - -
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Residues in contact with GLN 804 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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801C ASN 4.3 1.9 + - - +
802C PHE 3.0 1.2 + - - -
803C SER* 1.3 80.5 + - - +
805C ILE* 1.3 65.7 + - + +
817C PHE* 3.0 47.9 + - + +
818C ILE* 3.5 15.1 + - + +
931C ILE* 3.5 27.6 - - + +
932C GLY* 3.9 17.4 - - - -
935C GLN* 4.8 17.5 + - + +
1p NAG 2.6 36.8 + - - +
2p NAG 3.9 13.1 - - - +
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Residues in contact with ILE 805 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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802C PHE* 2.5 48.4 + - + +
803C SER 2.9 0.4 + - - -
804C GLN* 1.3 80.1 - - + +
806C LEU* 1.3 67.5 + - - +
807C PRO* 3.3 4.9 - - - +
816C SER* 3.0 19.7 + - - -
818C ILE* 4.6 12.6 - - + -
819C GLU* 4.2 0.7 - - - +
878C LEU* 5.0 6.3 - - + +
931C ILE* 5.3 17.5 - - + -
1052C PHE* 4.7 23.1 - - + -
1054C GLN* 4.2 20.6 + - - +
1063C LEU* 4.1 28.5 - - + -
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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