Contacts of the strand formed by residues 225 - 229 (chain I) in PDB entry 3KDO
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 THR 225 (chain I).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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150I LEU* 4.0 24.7 - - + -
181I LEU* 4.7 2.1 - - - +
186I ASP 3.2 3.4 + - - +
187I TYR* 3.1 39.7 - - + -
188I MET* 3.1 4.7 + - - +
209I MET* 4.6 2.8 - - - +
213I ILE* 4.0 11.4 - - - +
224I LYS* 1.3 78.0 - - - +
226I TRP* 1.3 69.7 + - - +
227I PHE* 3.8 8.3 - - + -
250I LYS* 4.0 15.3 + - - +
251I HIS* 2.9 38.6 + - + +
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Residues in contact with TRP 226 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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173I PHE* 4.3 4.6 - + - -
188I MET* 3.2 30.7 - - + +
190I ASP* 3.0 33.0 + - - -
202I PHE* 4.2 9.9 - + - -
205I ARG* 3.6 17.9 - - + -
206I ALA* 3.4 37.9 - - + -
209I MET* 3.4 37.3 - - + +
213I ILE* 4.1 7.2 - - + +
225I THR* 1.3 83.0 + - - +
227I PHE* 1.3 62.6 + - - +
228I ALA* 2.9 39.3 + - + -
244I LEU* 3.6 3.4 - - + -
249I LEU* 3.4 29.4 - - + +
251I HIS* 3.5 17.6 + - - +
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Residues in contact with PHE 227 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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150I LEU* 6.1 0.9 - - + -
157I ILE* 5.8 1.3 - - + -
187I TYR* 3.2 51.1 - + - -
188I MET 2.8 9.4 + - - -
189I KCX 3.8 20.9 - - + -
190I ASP* 3.2 22.9 + - - +
225I THR* 3.8 16.4 - - + -
226I TRP* 1.3 71.9 - - - +
228I ALA* 1.3 61.9 + - - +
229I ASN 3.5 1.0 + - - -
251I HIS* 3.6 41.3 - + - -
253I MET* 3.7 18.3 - - + +
279I HIS* 3.8 31.4 - + + -
312I GLN* 3.5 13.7 - - - -
387I VAL* 4.7 4.7 - - + -
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Residues in contact with ALA 228 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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190I ASP* 3.7 6.1 - - - -
202I PHE* 3.5 15.0 - - + -
226I TRP* 2.9 49.2 + - + +
227I PHE* 1.3 69.7 - - - +
229I ASN* 1.3 58.8 + - - +
230I ILE* 3.3 10.0 + - - +
244I LEU* 3.6 12.6 - - + -
251I HIS 4.0 4.0 + - - +
252I ALA 3.7 0.3 - - - -
253I MET* 2.7 26.6 + - - +
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Residues in contact with ASN 229 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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190I ASP* 3.0 22.8 + - + +
191I ASP 3.4 5.3 + - - -
192I GLU* 3.0 28.9 + - - +
194I LEU 3.0 27.2 + - - +
195I THR* 4.4 9.0 - - - +
202I PHE* 3.3 17.8 - - - -
205I ARG* 4.3 3.5 + - - -
227I PHE 3.5 1.8 + - - -
228I ALA* 1.3 68.9 - - - +
230I ILE* 1.3 59.7 + - - +
231I THR* 2.7 33.5 + - - -
240I ARG* 4.9 1.2 + - - -
253I MET* 3.5 22.7 - - - +
255I ASP* 3.9 2.6 + - - +
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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