Contacts of the helix formed by residues 219 - 228 (chain X) in PDB entry 2AE0
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 SER 219 (chain X).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
218X HIS* 1.3 76.2 - - - +
220X GLU* 1.3 58.4 + - - +
221X ALA* 3.5 8.6 + - - +
222X GLU* 3.0 38.9 + - - +
223X VAL* 3.0 27.8 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 220 (chain X).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
118X TYR* 3.2 44.5 + - + +
153X LEU* 3.4 30.2 + - - +
219X SER* 1.3 73.6 - - - +
221X ALA* 1.3 59.1 + - - +
223X VAL* 3.4 7.5 + - - +
224X ARG* 3.0 32.0 + - + +
----------------------------------------------------------
Back to top of page
Residues in contact with ALA 221 (chain X).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
219X SER* 3.3 7.9 + - - +
220X GLU* 1.3 80.9 - - - +
222X GLU* 1.3 58.2 + - + +
224X ARG* 3.5 6.6 + - - +
225X GLU* 3.0 28.6 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 222 (chain X).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
214X TRP* 3.7 17.9 - - + -
218X HIS* 3.5 21.3 - - - +
219X SER* 3.0 39.4 + - - +
221X ALA* 1.3 75.0 - - + +
223X VAL* 1.3 60.3 + - - +
225X GLU* 3.5 8.3 + - - +
226X LEU* 3.0 28.6 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with VAL 223 (chain X).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
153X LEU* 4.3 9.6 - - + -
154X MET* 4.3 23.1 - - + +
214X TRP* 4.1 12.6 - - + -
215X GLY* 3.7 36.1 - - - +
218X HIS* 4.3 1.8 - - + +
219X SER 3.0 20.9 + - - +
220X GLU* 3.8 10.1 - - - +
221X ALA 3.3 0.2 - - - -
222X GLU* 1.3 74.9 - - - +
224X ARG* 1.3 59.5 + - - +
226X LEU* 3.3 2.4 + - - +
227X LEU* 2.9 50.1 + - + +
----------------------------------------------------------
Back to top of page
Residues in contact with ARG 224 (chain X).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
134X ALA 4.7 0.6 + - - -
137X TYR* 3.7 47.3 + - + +
138X ALA* 3.9 11.3 - - - +
153X LEU* 3.9 18.6 - - + -
220X GLU* 3.0 22.0 + - - +
221X ALA* 3.8 7.4 - - - +
223X VAL* 1.3 77.7 - - - +
225X GLU* 1.3 62.7 + - - +
227X LEU* 3.9 2.0 - - - +
228X GLU* 3.0 53.4 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 225 (chain X).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
198X ARG* 3.2 33.8 + - - -
221X ALA 3.0 19.3 + - - +
222X GLU* 3.7 8.5 - - - +
224X ARG* 1.3 77.4 - - - +
226X LEU* 1.3 62.5 + - - +
228X GLU* 3.6 12.3 + - - +
229X GLN* 3.2 37.2 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 226 (chain X).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
154X MET* 4.4 11.9 - - + -
191X ILE* 3.3 36.5 - - + +
194X VAL* 3.7 30.5 - - + -
195X LEU* 3.9 24.9 - - + -
198X ARG* 4.1 9.4 - - - +
214X TRP* 3.5 33.4 - - + -
222X GLU 3.0 17.7 + - - +
223X VAL 3.6 3.1 - - - +
225X GLU* 1.3 81.4 + - - +
227X LEU* 1.3 64.0 + - + +
229X GLN* 3.0 25.6 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 227 (chain X).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
133X ARG* 3.2 17.7 - - - +
137X TYR* 3.6 24.2 - - + +
153X LEU* 3.8 26.2 - - + +
154X MET* 4.1 17.3 - - + -
157X PHE* 3.8 41.0 - - + -
191X ILE* 4.1 14.5 - - + +
223X VAL* 2.9 37.9 + - + +
224X ARG 3.9 2.9 - - - +
226X LEU* 1.3 78.3 - - + +
228X GLU* 1.3 56.5 + - - +
229X GLN 3.1 0.4 - - - -
230X ASN* 3.1 21.1 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 228 (chain X).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
133X ARG* 4.3 5.6 - - - +
134X ALA* 3.8 33.7 + - + +
137X TYR* 3.5 20.7 - - + -
224X ARG* 3.0 53.7 + - - +
225X GLU* 3.8 9.9 - - - +
226X LEU 3.2 0.6 - - - -
227X LEU* 1.3 71.1 - - - +
229X GLN* 1.3 64.8 + - - +
230X ASN 3.0 12.7 + - - +
231X PRO* 4.2 4.7 - - - +
----------------------------------------------------------
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