Contacts of the helix formed by residues 1056 - 1061 (chain C) in PDB entry 4DDG
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 VAL1056 (chain C).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1052C LEU* 4.0 31.2 - - + -
1053C GLU* 3.2 22.7 - - + +
1054C LEU 3.0 2.6 - - - -
1055C SER* 1.3 81.0 + - - +
1057C LEU* 1.3 69.4 + - + +
1059C LYS* 2.9 39.6 + - + +
1060C GLU* 3.6 8.0 + - - +
1082C ILE* 4.3 11.2 - - + -
1084C LYS* 5.0 6.7 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with LEU1057 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1054C LEU* 2.9 25.3 + - + +
1056C VAL* 1.3 83.3 - - + +
1058C TYR* 1.3 62.3 + - - +
1060C GLU* 2.9 36.3 + - + +
1061C TYR* 3.4 18.4 - - + -
1072C ILE* 3.9 25.1 - - + -
1075C LEU* 4.3 22.4 - - + -
1082C ILE* 3.7 33.0 - - + -
1084C LYS* 4.8 1.8 - - + -
1236C MET* 5.4 3.4 - - + -
1260C LEU* 4.3 5.6 - - + -
1262C ARG* 3.7 19.3 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with TYR1058 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1055C SER* 2.9 32.7 + - - +
1057C LEU* 1.3 79.5 - - - +
1059C LYS* 1.3 63.0 + - + +
1061C TYR 3.2 17.0 + - - +
1063C GLU* 4.5 3.1 - - - +
1069C GLN* 3.2 51.1 + - + +
1072C ILE* 3.7 24.5 - - + -
1073C LYS* 3.6 31.6 - - + +
1076C HIS* 3.5 33.4 - + - +
----------------------------------------------------------
Back to top of page
Residues in contact with LYS1059 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1055C SER* 3.6 26.4 + - - +
1056C VAL* 2.9 34.2 + - + +
1058C TYR* 1.3 77.8 - - + +
1060C GLU* 1.3 63.3 + - + +
1061C TYR 3.1 7.7 + - - +
1063C GLU* 6.0 0.4 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with GLU1060 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1056C VAL* 4.1 9.3 - - - +
1057C LEU* 2.9 28.8 + - - +
1059C LYS* 1.3 77.7 - - + +
1061C TYR* 1.3 70.6 + - + +
1084C LYS* 3.0 30.8 + - - +
1262C ARG* 3.4 25.0 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with TYR1061 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1057C LEU* 3.4 17.3 - - + +
1058C TYR 3.2 16.1 + - - +
1059C LYS* 3.1 5.8 - - - +
1060C GLU* 1.3 96.0 - - + +
1062C ALA* 1.3 65.7 + - - +
1063C GLU* 3.5 7.1 - - - +
1065C ASP* 4.5 6.7 - - + -
1068C TYR* 3.5 56.2 - + + -
1069C GLN* 3.9 15.7 - - - +
1072C ILE* 3.8 17.5 - - + -
1236C MET* 4.0 3.0 - - + +
1262C ARG* 3.5 38.2 + - - +
----------------------------------------------------------
Back to top of page
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
------------------------------------------------------------
Atomic class I II III IV V VI VII VIII
------------------------------------------------------------
I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
------------------------------------------------------------
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