Contacts of the strand formed by residues 226 - 229 (chain D) in PDB entry 3ECS
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 PHE 226 (chain D).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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193D VAL* 3.5 31.4 - - + -
195D VAL* 3.4 28.5 - - + -
206D ILE* 4.8 0.7 - - + -
212D THR* 4.1 15.0 - - + -
215D MSE 3.9 5.4 - - + -
216D ALA* 3.5 40.6 - - + -
219D ALA* 4.2 6.7 - - + -
224D LYS 3.3 5.5 + - - +
225D PRO* 1.3 71.7 - - - +
227D TYR* 1.3 60.5 + - - +
228D VAL* 3.9 11.7 - - + -
276D THR* 4.5 3.6 - - + -
280D LEU 3.5 25.4 - - - +
281D ILE* 4.0 15.3 - - + +
282D THR* 3.0 33.6 + - - +
283D LEU 3.6 2.8 + - - +
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Residues in contact with TYR 227 (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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115D CYS* 5.0 4.3 - - - -
118D PHE* 3.8 32.6 + + + -
192D LEU* 3.5 35.2 - - + -
193D VAL 2.7 15.6 + - - +
194D ILE* 3.3 17.0 - - + -
195D VAL* 2.9 31.2 + - - +
225D PRO* 3.7 19.4 - - + +
226D PHE* 1.3 77.6 - - - +
228D VAL* 1.3 62.4 + - - +
282D THR* 4.1 15.5 - - + +
283D LEU* 3.6 30.9 - - + +
285D PHE* 3.6 27.8 - + + -
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Residues in contact with VAL 228 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
195D VAL* 3.2 9.9 - - + +
196D GLY 4.3 1.3 - - - +
197D ALA* 4.0 26.2 - - + -
206D ILE* 4.2 15.9 - - + -
226D PHE* 3.9 14.8 - - + -
227D TYR* 1.3 77.4 - - - +
229D VAL* 1.3 62.7 + - - +
230D ALA* 4.2 4.5 - - + -
281D ILE* 3.7 37.2 - - + -
283D LEU 3.0 8.8 + - - +
284D LEU* 3.3 11.8 - - + -
285D PHE* 2.6 36.6 + - - -
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Residues in contact with VAL 229 (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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111D ILE* 3.6 22.2 - - + -
115D CYS* 3.7 30.7 - - - -
133D VAL* 3.2 31.8 - - + +
134D VAL* 4.1 17.3 - - + +
137D VAL* 4.0 6.5 - - + -
194D ILE* 4.3 11.2 - - + -
195D VAL 3.1 13.4 + - - +
196D GLY* 3.5 13.3 - - - -
197D ALA 3.9 0.7 + - - -
227D TYR 5.3 0.2 - - - -
228D VAL* 1.3 78.5 - - - +
230D ALA* 1.3 63.8 + - - +
285D PHE* 3.6 6.5 - - + -
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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