Contacts of the helix formed by residues 954 - 960 (chain B) in PDB entry 6IEH
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 ASP 954 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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201A LYS* 3.6 23.1 + - - +
943B ALA* 5.9 0.4 - - - -
953B ILE* 1.3 80.3 - - - +
955B GLU* 1.3 65.4 + - - +
956B GLU* 3.2 11.8 + - - +
957B THR* 2.9 39.1 + - - -
958B TYR* 3.1 12.6 + - - +
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Residues in contact with GLU 955 (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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940B LYS* 6.0 2.0 - - + +
943B ALA* 4.7 22.6 - - + +
953B ILE* 5.6 0.8 - - - +
954B ASP* 1.3 74.4 - - - +
956B GLU* 1.3 64.2 + - - +
958B TYR* 4.3 1.6 - - - +
959B LEU* 3.3 23.4 + - - +
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Residues in contact with GLU 956 (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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201A LYS* 4.5 18.2 - - + -
686B ASN* 4.2 1.0 - - - +
687B SER* 3.7 27.1 - - - -
954B ASP* 3.2 9.8 + - - +
955B GLU* 1.3 79.1 - - - +
957B THR* 1.3 58.6 + - - +
959B LEU* 3.7 2.2 - - - +
960B SER* 2.7 33.6 + - - +
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Residues in contact with THR 957 (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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201A LYS* 3.3 29.1 - - + +
954B ASP* 2.9 20.9 + - - -
956B GLU* 1.3 78.2 - - - +
958B TYR* 1.3 63.8 + - - +
960B SER* 3.2 8.2 + - - +
961B SER* 3.0 23.0 + - - -
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Residues in contact with TYR 958 (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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884B ASP* 2.3 32.0 + - - -
886B LEU* 5.5 0.5 - - - +
887B LEU* 3.8 12.0 + - - +
939B ALA* 3.4 42.4 - - + -
942B ILE* 4.1 21.3 - - + +
943B ALA* 4.1 17.9 - - + -
953B ILE* 5.4 16.4 - - + -
954B ASP 3.1 13.0 + - - +
955B GLU 3.6 3.1 + - - +
957B THR* 1.3 75.7 - - - +
959B LEU* 1.3 58.8 + - + +
961B SER* 2.5 35.6 + - - -
962B PHE* 3.4 19.4 - + - -
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Residues in contact with LEU 959 (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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686B ASN* 3.7 23.6 - - - +
687B SER* 5.1 1.3 - - - -
935B MET* 6.0 0.2 - - - +
936B GLN* 5.4 13.8 - - + +
939B ALA* 5.1 9.6 - - + -
940B LYS* 5.8 6.1 - - + +
955B GLU 3.3 17.2 + - - +
956B GLU* 3.7 4.0 - - - +
957B THR 3.2 0.2 - - - -
958B TYR* 1.3 84.9 - - + +
960B SER* 1.3 55.7 + - - +
961B SER 3.3 1.2 + - - -
962B PHE* 4.1 18.9 + - - +
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Residues in contact with SER 960 (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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200A LYS 5.7 0.2 + - - -
201A LYS* 5.0 11.3 - - - +
684B LYS* 5.6 0.9 - - - -
686B ASN* 1.8 39.7 - - - -
956B GLU* 2.7 22.0 + - - +
957B THR* 3.2 9.4 + - - +
959B LEU* 1.3 73.4 - - - +
961B SER* 1.3 56.4 + - - +
962B PHE 3.2 11.5 + - - +
963B LYS* 4.8 11.4 - - - +
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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