Contacts of the helix formed by residues 846 - 854 (chain u) in PDB entry 6FF7
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 846 (chain u).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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841u ALA* 5.1 5.0 - - - +
845u GLY* 1.3 71.7 - - - +
847u ALA* 1.3 66.8 + - - +
848u GLU 3.2 2.3 + - - -
849u ILE* 3.4 4.3 + - - +
850u ILE* 3.2 24.5 + - - +
875u ILE* 5.8 8.0 - - + +
879u LEU* 4.7 19.0 - - + +
880u GLY 4.9 9.9 - - - +
881u ALA* 6.1 0.7 - - - -
883u ASP* 3.9 24.2 - - + +
884u ILE* 5.5 1.8 - - + +
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Residues in contact with ALA 847 (chain u).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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846u ALA* 1.3 76.1 - - - +
848u GLU* 1.3 59.3 + - - +
849u ILE 3.3 0.2 - - - -
850u ILE* 3.9 7.6 - - - -
851u SER* 2.9 39.4 + - - -
883u ASP* 3.9 26.4 - - + +
884u ILE* 4.6 9.2 - - + -
888u LEU* 5.9 5.4 - - + -
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Residues in contact with GLU 848 (chain u).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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807u LYS* 5.9 7.0 - - + -
844u VAL* 5.2 12.8 - - + -
845u GLY* 4.9 10.1 - - - +
846u ALA 3.2 1.6 - - - +
847u ALA* 1.3 79.3 - - - +
849u ILE* 1.3 59.2 + - - +
851u SER* 5.0 1.0 - - - -
852u ARG* 3.8 15.6 + - - +
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Residues in contact with ILE 849 (chain u).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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837u THR* 5.7 3.4 - - - +
840u LEU* 6.1 2.2 - - + -
841u ALA* 5.0 13.0 - - + +
845u GLY 4.5 9.1 + - - +
846u ALA 3.4 7.3 + - - +
847u ALA 3.3 0.2 - - - -
848u GLU* 1.3 77.8 - - - +
850u ILE* 1.3 63.8 + - - +
852u ARG* 3.1 9.1 + - - +
853u ILE* 3.0 21.4 + - - +
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Residues in contact with ILE 850 (chain u).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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846u ALA 3.2 16.3 + - - +
847u ALA* 4.3 5.2 - - - -
849u ILE* 1.3 78.7 - - - +
851u SER* 1.3 51.8 + - - +
853u ILE* 2.8 8.3 + - - +
854u VAL* 2.6 41.3 + - + +
872u ILE* 6.4 3.6 - - + -
875u ILE* 6.4 2.0 - - + -
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Residues in contact with SER 851 (chain u).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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847u ALA* 2.9 24.7 + - - +
848u GLU 5.0 0.7 - - - -
850u ILE* 1.3 74.8 - - - +
852u ARG* 1.3 57.4 + - - +
854u VAL* 4.2 12.6 + - - +
855u ASP* 5.3 1.9 + - - +
888u LEU* 5.6 10.3 - - - -
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Residues in contact with ARG 852 (chain u).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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815u PHE* 5.5 12.4 - - + +
848u GLU 3.8 13.8 + - - +
849u ILE* 3.1 11.0 + - - +
850u ILE 3.1 0.6 - - - -
851u SER* 1.3 79.3 - - - +
853u ILE* 1.3 59.0 + - - +
854u VAL 3.6 0.2 - - - -
855u ASP* 5.2 3.1 + - - +
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Residues in contact with ILE 853 (chain u).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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849u ILE 3.0 10.0 + - - +
850u ILE* 2.8 14.1 + - - +
852u ARG* 1.3 74.1 - - - +
854u VAL* 1.3 60.7 + - - -
855u ASP 3.4 1.6 - - - +
856u ASP* 3.8 21.2 + - + +
857u LEU* 4.7 1.6 + - - +
868u VAL* 4.6 14.5 - - + +
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Residues in contact with VAL 854 (chain u).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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850u ILE* 2.6 22.8 + - + +
851u SER* 4.2 9.1 - - - +
852u ARG 3.6 1.8 - - - -
853u ILE* 1.3 72.0 - - - +
855u ASP* 1.3 60.7 + - - +
856u ASP 3.2 5.6 + - - -
857u LEU* 3.6 17.7 + - - +
888u LEU* 5.8 1.3 - - + +
891u GLN* 4.9 24.1 - - + +
892u LEU* 5.2 13.7 - - + +
895u GLY* 5.5 0.3 - - - -
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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