Contacts of the strand formed by residues 186 - 193 (chain D) in PDB entry 2X4O
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 LYS 186 (chain D).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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184D ALA 3.6 4.4 + - - +
185D PRO* 1.3 73.2 - - - +
187D THR* 1.3 59.3 + - - +
188D HIS* 4.8 1.9 + - - -
204D TRP 3.8 0.9 - - - +
205D ALA* 3.7 0.7 - - - -
206D LEU* 2.8 44.9 + - + +
207D SER* 3.7 29.9 + - - -
1280D GOL 4.7 9.1 + - - -
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Residues in contact with THR 187 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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185D PRO* 3.7 18.3 + - + +
186D LYS* 1.3 78.1 - - - +
188D HIS* 1.3 65.8 + - - +
203D CYS* 5.7 0.2 - - - -
204D TRP 3.0 12.8 - - - +
205D ALA* 4.2 9.4 - - + -
261D VAL* 4.2 23.8 - - + -
270D LEU* 3.7 22.2 - - + +
272D LEU* 3.8 23.1 - - - +
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Residues in contact with HIS 188 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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186D LYS 4.8 1.6 + - - -
187D THR* 1.3 78.3 - - - +
189D MET* 1.3 65.2 + - - +
190D THR* 3.9 20.7 - - + +
202D ARG 3.8 0.2 - - - +
203D CYS* 3.8 1.0 - - - -
204D TRP* 2.8 72.1 + + + +
206D LEU* 3.9 22.8 - - + +
272D LEU* 4.3 7.5 - - - +
1278D GOL 5.1 3.1 + - - -
14E PRO* 5.9 2.7 - - + -
99E MET* 5.2 0.6 + - - -
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Residues in contact with MET 189 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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188D HIS* 1.3 82.1 - - - +
190D THR* 1.3 67.9 + - - +
201D LEU* 3.8 16.6 - - + -
202D ARG 3.3 10.1 - - - +
203D CYS* 4.2 7.4 - - + -
217D TRP* 3.5 35.0 - - + -
259D CYS* 4.6 0.4 - - - -
272D LEU* 4.1 31.5 - - + +
273D ARG 4.3 14.6 - - - +
274D TRP* 3.4 55.7 - - + +
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Residues in contact with THR 190 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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188D HIS* 3.9 19.7 - - + +
189D MET* 1.3 80.4 - - - +
191D HIS* 1.3 61.5 + - - +
192D HIS* 3.9 14.9 + - + -
200D THR 3.4 3.1 - - - +
201D LEU* 3.4 6.1 - - - +
202D ARG* 3.0 38.7 + - - +
204D TRP* 3.9 3.6 - - - +
274D TRP* 4.3 5.7 - - - -
99E MET* 2.5 38.2 + - - +
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Residues in contact with HIS 191 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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190D THR* 1.3 75.9 - - - +
192D HIS* 1.3 75.2 + - - +
193D ALA* 4.6 4.4 + - + +
199D ALA* 3.5 24.2 - - + +
200D THR 3.4 2.9 - - - -
201D LEU* 3.4 22.2 - - + -
251D SER* 5.8 0.7 - - - -
254D GLU* 2.9 34.3 + - + +
274D TRP* 3.8 35.0 - + + -
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Residues in contact with HIS 192 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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190D THR* 3.9 16.3 + - + -
191D HIS* 1.3 83.9 + - - +
193D ALA* 1.3 63.7 + - - +
194D VAL* 3.2 0.6 + - + -
199D ALA* 3.1 6.9 - - - -
200D THR* 2.7 41.6 + - - +
202D ARG* 4.6 0.8 + - - -
1276D MES 3.4 43.2 + - - +
98E ASP* 3.5 29.4 + - + +
99E MET* 3.6 31.6 - - - -
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Residues in contact with ALA 193 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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191D HIS* 4.6 5.8 + - + -
192D HIS* 1.3 70.4 - - - +
194D VAL* 1.3 64.4 + - - +
195D SER* 3.3 14.8 - - - +
198D GLU 3.9 5.2 - - - +
199D ALA* 4.3 4.5 - - + -
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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