Contacts of the helix formed by residues 895 - 900 (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 GLY 895 (chain B).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
891B MET 3.3 0.2 + - - -
892B MET 3.0 16.8 + - - -
893B PHE 3.2 1.6 - - - -
894B ASN* 1.3 76.9 - - - +
896B LEU* 1.3 65.6 + - - +
897B PHE 3.2 2.7 - - - -
898B ASN* 2.9 27.8 + - - +
899B ASP* 4.0 3.5 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 896 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
891B MET* 3.3 33.4 + - + +
894B ASN* 3.2 21.1 - - - +
895B GLY* 1.3 77.6 - - - +
897B PHE* 1.3 63.3 - - + +
899B ASP* 3.7 3.3 + - - +
900B LEU* 1.8 42.3 - - + +
908B LEU* 3.7 29.2 - - + -
931B PRO* 5.0 1.8 - - + -
934B GLN* 3.8 50.7 + - + +
935B MET* 4.3 2.9 - - - +
938B CYS* 5.2 1.8 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with PHE 897 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
888B LEU 4.5 3.8 - - - -
891B MET* 3.7 38.6 - - + -
892B MET* 4.2 27.6 - - + +
895B GLY 3.2 0.6 - - - -
896B LEU* 1.3 77.9 - - + +
898B ASN* 1.3 47.6 - - - +
900B LEU* 2.4 19.7 - - + -
905B ALA* 4.3 22.4 - - + -
908B LEU* 4.4 15.9 - - + -
909B LEU* 4.2 18.4 - - + -
1007B MET* 4.5 9.2 - - + -
1019B LEU* 4.4 12.8 - - + -
1022B LYS* 1.6 44.3 + - - +
1023B PHE* 3.6 34.5 - + + -
----------------------------------------------------------
Back to top of page
Residues in contact with ASN 898 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
895B GLY* 2.9 21.4 + - - +
897B PHE* 1.3 78.0 - - - +
899B ASP* 1.3 68.0 + - - +
900B LEU 4.6 0.7 - - - +
1019B LEU* 4.4 15.1 - - + +
1022B LYS* 3.3 10.2 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ASP 899 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
895B GLY 4.0 2.2 + - - +
896B LEU 3.7 3.7 + - - +
897B PHE 3.3 0.8 - - - -
898B ASN* 1.3 87.5 - - - +
900B LEU* 1.3 70.5 + - + +
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 900 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
896B LEU* 1.8 47.8 - - + +
897B PHE* 2.4 44.2 - - + -
898B ASN 3.3 0.7 - - - +
899B ASP* 1.3 85.1 - - + +
901B SER* 1.3 70.4 + - - +
902B ALA 3.8 0.7 + - - -
904B GLN* 4.5 2.7 - - + -
905B ALA* 4.3 11.0 - - + +
908B LEU* 5.3 2.5 - - + -
931B PRO* 4.3 24.7 - - + -
934B GLN* 5.0 6.5 - - - +
1022B LYS* 3.2 23.5 + - - +
----------------------------------------------------------
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