Contacts of the helix formed by residues 93 - 98 (chain M) in PDB entry 6LTJ
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 93 (chain M).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
16M LYS* 4.7 5.2 - - + -
25M PHE* 3.2 44.0 + - + +
26M TYR* 4.1 2.5 - - - +
27M MET* 4.1 17.7 - - + -
91M LEU 3.4 2.6 + - - -
92M LYS* 1.3 72.6 - - - +
94M SER* 1.3 56.6 + - - +
96M VAL* 3.2 9.5 - - - +
97M GLU* 2.9 36.0 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with SER 94 (chain M).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
24M GLU* 5.6 1.5 + - - -
92M LYS* 4.0 15.2 - - - +
93M ALA* 1.3 77.9 - - - +
95M GLU* 1.3 68.1 + - - +
96M VAL 3.1 0.3 + - - -
97M GLU* 3.1 5.7 + - - +
98M GLU* 3.0 34.4 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 95 (chain M).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
49M SER 4.7 2.6 - - - +
50M LEU* 3.6 27.7 - - + +
51M TRP* 2.8 53.6 + - - +
91M LEU* 5.0 3.0 - - + +
92M LYS* 3.6 23.8 + - + +
94M SER* 1.3 82.0 + - - +
96M VAL* 1.3 56.5 + - + +
98M GLU* 3.3 19.5 - - - +
99M ILE* 2.8 32.1 + - + +
----------------------------------------------------------
Back to top of page
Residues in contact with VAL 96 (chain M).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
27M MET* 3.4 31.6 - - + -
32M VAL* 3.8 31.9 - - + -
36M LEU* 5.4 5.2 - - + -
50M LEU* 5.6 1.1 - - + -
91M LEU* 4.9 12.3 - - + -
92M LYS 3.2 15.7 + - - +
93M ALA* 3.2 16.6 - - - +
95M GLU* 1.3 76.1 - - + +
97M GLU* 1.3 63.4 + - - +
98M GLU 3.1 2.1 + - - -
99M ILE* 3.3 19.1 - - + +
100M LEU* 3.3 24.5 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 97 (chain M).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
13M LYS* 2.8 37.7 + - - +
16M LYS* 3.8 25.3 - - - +
27M MET* 4.1 17.9 - - - +
93M ALA* 2.9 18.5 + - - +
94M SER* 3.8 4.5 - - - +
96M VAL* 1.3 78.1 - - - +
98M GLU* 1.3 57.2 + - - +
100M LEU* 3.8 18.4 - - + +
101M ASP* 4.5 6.2 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 98 (chain M).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
94M SER* 3.0 25.7 + - - +
95M GLU* 3.3 23.7 - - - +
97M GLU* 1.3 79.4 - - - +
99M ILE* 1.3 68.8 + - - +
100M LEU 3.2 2.0 - - - -
101M ASP* 3.5 25.0 + - - +
----------------------------------------------------------
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