Contacts of the helix formed by residues 188 - 193 (chain S) in PDB entry 3FKS
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 GLN 188 (chain S).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
148S VAL* 4.9 1.5 - - - +
149S GLN 3.1 25.7 + - - +
163S ARG* 5.0 2.9 + - - -
184S THR* 2.9 26.3 + - - +
185S ILE* 3.1 16.4 + - - +
187S ASN* 1.3 77.1 - - - +
189S LYS* 1.3 62.2 + - - +
190S ARG 3.2 0.9 - - - -
191S TRP* 3.3 18.2 + - + +
192S ASN* 2.9 46.3 + - - +
199S LYS 5.4 0.3 - - - +
201S LEU* 3.2 47.6 + - + +
203S CYS* 3.9 12.1 - - - -
230S TYR* 4.0 1.6 - - + +
267S LEU* 5.2 0.2 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with LYS 189 (chain S).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
186S LEU* 3.0 24.7 - - - +
187S ASN 2.9 2.1 + - - +
188S GLN* 1.3 77.3 - - - +
190S ARG* 1.3 63.9 + - + +
192S ASN 4.5 0.2 - - - +
193S ASN* 3.0 40.4 + - - +
225S HIS* 3.2 55.3 + - + +
226S ASP* 5.0 1.6 - - + +
227S ALA* 4.4 2.9 - - + -
229S LYS* 6.0 1.6 - - - +
230S TYR* 3.3 26.2 + - + +
437S PRO* 6.1 3.2 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ARG 190 (chain S).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
187S ASN* 3.0 25.3 + - - +
188S GLN 3.2 0.4 - - - -
189S LYS* 1.3 80.8 - - + +
191S TRP* 1.3 83.7 + - + +
193S ASN* 4.1 8.1 + - - +
194S GLY* 4.3 5.2 + - - -
437S PRO* 2.9 28.7 + - - +
438S LEU* 3.2 2.8 - - - +
439S ALA* 3.0 45.5 - - - +
441S GLU* 5.6 1.5 + - - -
442S GLU* 4.4 8.9 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with TRP 191 (chain S).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
149S GLN* 3.2 50.1 - - + +
163S ARG* 5.3 2.4 - - - +
187S ASN* 3.5 33.4 - - - -
188S GLN* 3.3 17.4 + - - +
189S LYS 3.2 0.2 - - - -
190S ARG* 1.3 102.3 - - + +
192S ASN* 1.3 64.6 + - - +
193S ASN 3.3 0.7 - - - -
194S GLY* 3.4 12.4 + - - -
196S ASP 4.5 2.9 - - - +
199S LYS* 3.3 61.8 - - + +
200S LYS* 3.3 17.2 - - - +
201S LEU 5.1 0.9 - - - +
439S ALA* 6.0 1.1 - - + -
440S THR 6.0 1.3 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with ASN 192 (chain S).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
188S GLN* 2.9 30.1 + - - +
189S LYS* 3.3 2.6 + - - +
191S TRP* 1.3 73.3 - - - +
193S ASN* 1.3 62.0 + - - +
194S GLY 3.2 7.0 + - - +
200S LYS* 3.7 29.0 + - - +
201S LEU 3.4 28.5 + - - +
202S TYR* 5.2 3.2 - - + -
229S LYS* 5.1 4.5 + - - -
230S TYR* 3.1 58.0 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with ASN 193 (chain S).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
189S LYS* 3.0 29.1 + - - +
190S ARG* 4.4 6.2 - - - +
191S TRP 3.3 0.2 - - - -
192S ASN* 1.3 77.2 - - - +
194S GLY* 1.3 61.3 + - - +
229S LYS* 3.1 28.9 + - - -
----------------------------------------------------------
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