Contacts of the helix formed by residues 889 - 893 (chain B) in PDB entry 1TWF
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 889 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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888B GLY* 1.3 75.3 + - - -
890B TYR* 1.3 58.7 + - - +
891B ASP* 2.9 42.7 + - + +
892B LYS* 4.1 8.3 + - + +
909B ASP* 4.4 20.0 + - - +
910B VAL* 3.9 19.2 + - - +
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Residues in contact with TYR 890 (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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876B LYS* 3.1 27.9 - - + -
877B PRO* 3.5 38.6 - - + +
878B GLN* 6.4 0.7 - - + -
885B MET* 3.7 20.1 - - + +
886B LYS* 3.4 27.9 + - - +
888B GLY 4.8 2.0 - - - -
889B THR* 1.3 71.6 - - - +
891B ASP* 1.3 56.5 + - - +
892B LYS 3.0 12.3 + - - +
893B LEU* 3.4 33.8 + - + +
910B VAL* 3.7 22.0 - - + -
936B ASP* 2.6 32.6 + - - -
938B SER* 3.2 19.3 + - - -
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Residues in contact with ASP 891 (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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876B LYS* 4.6 13.8 + - - +
889B THR* 2.9 29.5 + - + +
890B TYR* 1.3 76.0 - - - +
892B LYS* 1.3 63.5 + - + +
893B LEU 3.7 0.4 - - - +
63L ARG* 5.0 4.3 + - - -
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Residues in contact with LYS 892 (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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889B THR* 4.1 7.2 + - + +
890B TYR 3.0 1.6 + - - -
891B ASP* 1.3 84.0 - - + +
893B LEU* 1.3 64.9 + - - +
894B ASP* 3.8 3.6 + - - -
899B ILE* 3.5 32.9 - - + +
900B ALA 5.1 0.2 + - - -
903B VAL* 4.2 16.2 - - + +
904B ARG* 2.7 30.8 + - - +
905B VAL* 3.8 7.7 - - + +
906B SER* 4.3 4.9 + - - +
909B ASP* 2.9 33.3 + - + +
910B VAL 5.0 1.6 - - - +
63L ARG* 4.8 21.6 + - - +
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Residues in contact with LEU 893 (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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875B GLU 4.3 8.7 - - - +
876B LYS* 2.9 32.2 + - + -
890B TYR* 3.4 37.6 + - + +
892B LYS* 1.3 80.7 - - - +
894B ASP* 1.3 67.4 + - - +
897B GLY* 4.1 5.8 - - - +
898B LEU 4.1 3.6 - - - +
899B ILE* 3.8 8.5 - - + +
910B VAL* 3.0 29.4 - - + +
911B ILE 3.3 24.5 - - - +
913B GLY* 3.5 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