Contacts of the helix formed by residues 208 - 213 (chain A) in PDB entry 1FIB
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 TRP 208 (chain A).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
207A ASN* 1.3 77.2 - - - +
209A ILE* 1.3 68.3 + - + +
211A TYR* 3.4 3.6 + - - +
212A LYS* 2.9 32.2 + - + +
230A ASN* 5.2 1.7 + - - -
270A GLU* 3.0 29.6 + - + -
273A LYS* 4.0 35.4 - - + +
274A TYR* 3.8 32.8 - + - -
312A PHE* 3.5 41.5 - + + -
313A SER* 4.4 0.9 - - - -
314A THR* 3.5 22.8 + - + +
316A ASP* 3.1 16.5 + - - +
317A ASN* 3.6 34.6 - - + +
319A ASN* 4.1 6.7 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with ILE 209 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
207A ASN* 3.3 9.2 + - - +
208A TRP* 1.3 85.1 - - + +
210A GLN* 1.3 59.3 + - + +
212A LYS* 3.4 10.6 - - + +
213A GLU* 2.8 56.5 + - + +
----------------------------------------------------------
Back to top of page
Residues in contact with GLN 210 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
206A LYS* 3.3 39.8 - - + +
207A ASN* 2.9 46.8 + - - +
209A ILE* 1.3 77.5 - - + +
211A TYR* 1.3 57.4 + - - +
213A GLU* 5.0 2.5 - - - -
214A GLY* 2.8 37.0 + - - +
215A PHE* 3.5 8.7 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with TYR 211 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
204A PHE* 2.6 45.9 + - - +
206A LYS* 3.6 32.8 - - + -
207A ASN 3.1 15.4 + - - +
208A TRP 3.9 3.4 - - - +
210A GLN* 1.3 76.0 - - - +
212A LYS* 1.3 59.8 + - - +
215A PHE* 3.8 16.4 - + - -
227A TRP* 3.3 30.8 + + - -
229A GLY* 3.3 2.4 - - - -
230A ASN* 2.8 25.7 + - - +
312A PHE* 3.5 29.6 - + + -
314A THR* 3.7 9.2 - - + -
333A GLY* 3.2 26.6 + - - -
345A ASN* 3.5 23.2 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LYS 212 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
208A TRP* 2.9 21.4 + - + +
209A ILE* 3.4 12.1 - - + +
211A TYR* 1.3 78.4 - - - +
213A GLU* 1.3 71.5 + - + +
229A GLY* 3.5 1.6 - - - -
230A ASN* 3.3 14.5 + - - +
231A GLU* 3.2 38.6 + - + +
232A LYS* 4.7 0.9 + - - +
270A GLU* 2.8 30.6 + - - +
274A TYR* 3.4 31.4 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 213 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
209A ILE* 2.8 42.5 + - + +
210A GLN* 4.5 2.2 - - - +
212A LYS* 1.3 87.0 - - + +
214A GLY* 1.3 61.1 + - - +
228A LEU 3.6 0.5 - - - +
229A GLY* 3.9 2.7 - - - -
231A GLU* 5.8 0.2 - - - -
232A LYS* 3.3 26.7 + - - +
----------------------------------------------------------
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