Contacts of the helix formed by residues 215 - 234 (chain A) in PDB entry 2IWI
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 HIS 215 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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190A HIS 5.1 1.8 - - - -
191A ASP 3.1 27.6 + - - -
192A GLU 4.6 0.4 - - - -
193A PRO* 3.7 28.9 - - + +
194A TYR* 4.4 2.5 - - - -
207A GLU* 5.1 0.6 + - - -
214A TYR* 1.3 75.9 - - - +
216A ALA* 1.3 66.8 + - - +
217A LEU 3.5 0.4 - - - +
218A PRO* 3.4 22.8 - - + +
219A ALA* 3.2 25.8 + - - +
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Residues in contact with ALA 216 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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155A HIS* 5.4 2.0 - - + -
160A VAL* 3.6 37.1 - - + +
162A ARG* 6.2 0.2 - - - -
189A LEU* 5.0 4.7 - - + -
190A HIS 5.3 3.7 + - - +
194A TYR* 3.8 23.7 - - + +
214A TYR* 5.3 2.7 - - - -
215A HIS* 1.3 75.4 - - - +
217A LEU* 1.3 61.6 + - + +
219A ALA* 3.3 3.1 + - - +
220A THR* 2.5 38.3 + - - +
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Residues in contact with LEU 217 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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155A HIS* 3.9 28.0 - - + +
216A ALA* 1.3 81.9 - - + +
218A PRO* 1.3 65.0 - - + +
220A THR* 2.9 8.9 + - - -
221A VAL* 2.8 34.8 + - + +
276A SER* 5.3 8.1 - - - -
277A LEU* 4.1 25.4 - - + +
278A GLU* 5.6 2.0 - - - +
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Residues in contact with PRO 218 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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207A GLU* 4.4 2.7 - - - +
215A HIS* 3.4 33.4 - - + +
217A LEU* 1.3 97.7 - - + +
219A ALA* 1.3 60.4 + - - +
221A VAL* 3.6 6.6 + - + +
222A TRP* 3.2 16.5 + - - +
271A PRO* 4.1 24.2 - - + +
274A ARG* 3.3 32.8 + - + +
275A PRO 5.8 0.4 - - - +
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Residues in contact with ALA 219 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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197A PHE* 6.5 0.4 - - + -
205A PRO* 4.6 9.0 - - + +
207A GLU* 4.2 8.0 + - - +
214A TYR* 3.3 33.4 - - + -
215A HIS 3.2 19.4 + - - +
216A ALA 3.6 2.2 - - - +
217A LEU 3.1 0.4 - - - -
218A PRO* 1.3 77.9 - - - +
220A THR* 1.3 63.6 + - - +
222A TRP* 3.3 9.3 + - - +
223A SER* 3.0 21.8 + - - -
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Residues in contact with THR 220 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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151A ILE* 3.5 44.0 - - + -
155A HIS* 3.9 12.9 + - + +
160A VAL* 4.2 8.8 - - + +
161A HIS* 6.2 1.6 - - + +
162A ARG* 5.8 2.1 + - - +
164A ILE* 4.6 4.9 - - + -
216A ALA 2.5 28.2 + - - -
217A LEU* 3.2 10.0 - - - -
219A ALA* 1.3 76.5 - - - +
221A VAL* 1.3 62.1 + - - +
223A SER* 2.1 28.6 + - - +
224A LEU* 2.9 17.2 + - + +
277A LEU* 5.2 2.7 - - + -
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Residues in contact with VAL 221 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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217A LEU* 2.8 24.9 + - + +
218A PRO* 3.9 7.2 - - + +
220A THR* 1.3 73.3 - - - +
222A TRP* 1.3 52.2 + - - +
224A LEU* 3.1 13.1 + - + +
225A GLY* 2.7 33.1 + - - -
266A CYS* 3.8 36.7 - - + +
274A ARG* 4.0 4.9 - - - -
275A PRO* 3.2 35.7 - - + +
276A SER* 4.5 3.8 - - - -
277A LEU* 4.7 6.7 - - + +
280A ILE* 4.1 18.4 - - + -
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Residues in contact with TRP 222 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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202A VAL 5.2 0.2 + - - -
203A TYR 3.5 13.5 + - - -
204A SER 3.5 12.1 + - - -
205A PRO* 3.8 16.4 - - + -
206A PRO* 3.5 17.3 - - + -
218A PRO 3.2 11.8 + - - +
219A ALA 3.3 10.3 - - - +
221A VAL* 1.3 77.2 - - - +
223A SER* 1.3 53.3 + - - +
225A GLY* 2.8 5.7 + - - -
226A ILE* 2.8 52.7 + - + +
238A PHE* 3.2 41.1 - + - -
244A ILE* 3.6 31.4 - - + -
247A ALA* 4.9 1.6 - - + -
266A CYS 3.8 10.5 + - - -
267A LEU* 3.5 33.8 - - + +
268A ALA 4.2 2.2 - - - -
269A PRO 4.9 0.7 - - - -
274A ARG* 3.1 32.5 - - - +
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Residues in contact with SER 223 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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164A ILE* 3.8 40.1 - - - +
203A TYR* 5.1 4.6 - - - -
219A ALA 3.0 9.7 + - - -
220A THR* 2.1 37.1 + - - -
222A TRP* 1.3 80.8 - - - +
224A LEU* 1.3 50.1 + - - +
226A ILE* 3.1 8.3 + - - +
227A LEU* 2.6 36.3 + - - +
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Residues in contact with LEU 224 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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144A PHE* 3.4 20.3 - - + -
147A VAL* 3.6 31.2 - - + -
148A VAL* 3.9 16.4 - - + -
151A ILE* 3.8 12.8 - - + -
164A ILE* 4.7 1.8 - - + +
220A THR* 2.9 37.0 + - + +
221A VAL* 3.3 11.0 - - + +
223A SER* 1.3 74.5 + - - +
225A GLY* 1.3 58.4 + - - +
227A LEU* 2.9 9.9 + - + +
228A LEU* 2.6 38.1 + - - +
266A CYS* 5.4 2.5 - - - -
277A LEU* 3.6 29.2 - - + -
280A ILE* 4.9 2.9 - - + -
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Residues in contact with GLY 225 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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221A VAL 2.7 14.5 + - - -
222A TRP 2.8 6.6 + - - -
224A LEU* 1.3 73.3 - - - +
226A ILE* 1.3 60.9 + - - -
228A LEU* 3.3 4.8 + - - +
229A TYR* 3.0 20.8 + - - +
263A ILE* 4.5 6.5 - - - +
266A CYS* 3.5 27.2 - - - +
267A LEU* 3.6 14.0 - - - +
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Residues in contact with ILE 226 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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202A VAL 4.8 7.4 - - - +
203A TYR* 3.6 34.1 - - + +
222A TRP* 2.8 62.6 + - + +
223A SER* 3.5 7.9 - - - +
225A GLY* 1.3 71.2 - - - +
227A LEU* 1.3 57.9 + - - +
229A TYR* 3.2 7.6 + - - +
230A ASP* 2.9 28.3 + - - +
236A ILE* 3.8 11.2 - - + -
237A PRO* 3.6 31.8 - - + +
238A PHE* 3.9 5.2 - - + -
267A LEU* 3.6 8.4 - - + +
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Residues in contact with LEU 227 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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125A LEU* 4.2 14.4 - - + -
144A PHE* 4.3 4.0 - - + -
147A VAL* 3.8 28.3 - - + -
164A ILE* 3.7 27.6 - - + -
165A LYS* 5.4 4.5 - - - +
166A ASP* 4.7 15.9 - - - +
169A ILE* 4.5 4.9 - - + -
203A TYR* 5.5 4.9 - - - -
223A SER 2.6 17.5 + - - +
224A LEU* 3.2 15.0 - - + +
226A ILE* 1.3 73.5 - - - +
228A LEU* 1.3 64.0 + - - +
230A ASP* 3.0 20.4 + - + +
231A MET* 3.0 38.2 + - + +
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Residues in contact with LEU 228 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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140A SER* 4.7 1.6 - - - -
144A PHE* 3.2 55.2 - - + -
224A LEU 2.6 13.8 + - - +
225A GLY* 3.7 5.2 - - - +
227A LEU* 1.3 72.5 - - - +
229A TYR* 1.3 56.7 + - - +
231A MET* 3.2 10.6 + - + +
232A VAL* 2.7 55.0 + - + +
259A CYS* 4.5 5.2 - - - -
262A LEU* 4.4 8.1 - - + -
263A ILE* 4.2 15.0 - - + -
266A CYS* 6.4 0.7 - - - -
285A TRP* 3.5 33.7 - - + -
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Residues in contact with TYR 229 (chain A).
Click here for Legend to table.
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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225A GLY 3.0 13.4 + - - +
226A ILE 3.5 9.4 - - - +
228A LEU* 1.3 75.9 - - - +
230A ASP* 1.3 53.1 + - - +
232A VAL* 4.1 0.2 - - - -
233A CYS* 2.8 69.0 + - + +
235A ASP* 3.0 29.2 - - + -
236A ILE 3.7 2.0 - - - -
237A PRO* 3.5 37.9 + - + +
249A LEU* 4.0 19.5 - - + -
250A HIS 3.5 20.4 + - - -
251A PHE* 3.8 31.9 - + - -
252A PRO* 4.1 3.3 - - - +
263A ILE* 3.8 15.1 - - + +
267A LEU* 5.2 0.2 - - + -
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Residues in contact with ASP 230 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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129A ILE* 3.9 14.2 - - - +
166A ASP* 3.2 38.8 - - - +
203A TYR* 4.0 3.2 + - - +
226A ILE 2.9 12.6 + - - +
227A LEU* 3.1 14.7 - - + +
229A TYR* 1.3 76.2 - - - +
231A MET* 1.3 57.9 + - + +
234A GLY* 2.6 35.0 + - - -
235A ASP* 3.3 34.6 + - - +
236A ILE* 3.4 16.5 + - + +
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Residues in contact with MET 231 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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125A LEU* 4.0 21.1 - - + -
129A ILE* 4.3 5.9 - - + +
134A PRO* 3.3 5.4 - - - +
135A LEU* 3.0 56.4 + - + +
140A SER* 3.5 17.9 - - - +
143A PHE* 4.1 12.1 - - - -
144A PHE* 3.1 53.2 - - + -
147A VAL* 6.0 1.6 - - + -
227A LEU* 3.3 24.5 - - + +
228A LEU* 3.2 13.0 + - + +
230A ASP* 1.3 79.3 - - + +
232A VAL* 1.3 61.5 + - - +
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Residues in contact with VAL 232 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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134A PRO* 3.1 17.0 - - - +
135A LEU 4.7 1.1 - - - +
136A GLY* 4.0 4.8 + - - +
137A GLU* 3.2 41.1 - - + +
140A SER* 3.6 20.0 - - - +
228A LEU* 2.7 43.7 - - + +
229A TYR* 3.9 5.4 - - - +
231A MET* 1.3 75.9 - - - +
233A CYS* 1.3 60.9 + - - +
255A VAL* 5.1 9.5 - - + +
259A CYS* 4.2 7.0 - - - -
263A ILE* 4.1 10.3 - - + -
285A TRP* 4.5 0.2 - - + -
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Residues in contact with CYS 233 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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134A PRO* 3.8 9.5 - - - +
229A TYR* 2.8 59.0 + - + +
232A VAL* 1.3 76.8 - - - +
234A GLY* 1.3 57.3 + - - +
235A ASP* 3.8 2.1 + - - +
252A PRO* 3.3 43.4 - - + +
255A VAL* 3.8 13.2 - - - -
263A ILE* 5.7 0.2 - - - -
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Residues in contact with GLY 234 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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129A ILE* 3.9 25.9 - - - +
134A PRO* 3.7 16.2 - - - +
230A ASP* 2.6 20.8 + - - -
232A VAL 3.7 1.6 - - - -
233A CYS* 1.3 73.1 - - - +
235A ASP* 1.3 63.0 + - - +
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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
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Atomic class I II III IV V VI VII VIII
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I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
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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