Contacts of the helix formed by residues 228 - 236 (chain I) in PDB entry 5DST
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 ASP 228 (chain I).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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226I ILE* 3.9 17.4 - - + +
227I GLU* 1.3 76.8 - - - +
229I ARG* 1.3 66.6 + - - +
230I GLN* 3.3 3.1 - - - +
231I TYR* 3.2 27.0 + - - +
232I LYS* 3.0 22.9 + - - +
267I GLN* 3.0 20.5 + - - +
305I HIS* 3.2 20.1 + - + +
306I ALA* 5.4 0.2 - - + -
339I VAL* 4.9 2.6 - - - +
341I TYR* 2.7 31.6 + - + -
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Residues in contact with ARG 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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227I GLU* 3.1 16.9 + - - +
228I ASP* 1.3 76.5 - - - +
230I GLN* 1.3 87.4 + - - +
232I LYS* 3.9 1.6 - - - +
233I ASP* 3.0 38.4 + - - +
237I HIS* 5.6 0.2 - - - -
305I HIS* 3.1 33.2 + - + +
105K HIS* 4.7 24.2 + - - -
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Residues in contact with GLN 230 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
227I GLU* 4.5 1.8 + - - +
228I ASP* 3.3 0.6 - - - +
229I ARG* 1.3 108.0 + - - +
231I TYR* 1.3 65.8 + - - +
233I ASP* 3.2 17.6 + - + +
234I PHE* 3.2 7.5 + - + +
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Residues in contact with TYR 231 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
228I ASP* 3.2 25.5 + - - +
230I GLN* 1.3 82.1 - - - +
232I LYS* 1.3 56.0 + - - +
234I PHE* 3.2 25.8 + + + +
235I LYS* 2.9 61.2 + - + +
259I LEU* 3.5 15.7 - - + +
261I ASP* 3.0 26.5 + - + -
341I TYR* 3.4 14.8 - - - -
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Residues in contact with LYS 232 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
228I ASP 3.0 20.8 + - - +
229I ARG* 3.9 3.4 - - - +
231I TYR* 1.3 73.3 - - - +
233I ASP* 1.3 67.3 + - - +
236I ILE* 2.8 43.8 + - + -
237I HIS* 3.2 31.4 + - + +
255I MET* 3.8 4.9 - - - -
305I HIS* 4.2 25.7 + - + +
341I TYR* 3.5 36.5 + - + -
342I LEU 2.8 27.9 + - - -
343I GLU 3.3 17.2 + - - -
344I ASP* 4.6 4.9 - - - +
345I TYR* 4.9 3.2 - - - +
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Residues in contact with ASP 233 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
229I ARG* 3.0 27.1 + - - +
230I GLN* 3.2 12.6 - - - +
232I LYS* 1.3 78.3 - - - +
234I PHE* 1.3 58.4 + - - +
237I HIS* 3.7 25.8 - - - +
238I TRP* 2.9 31.4 + - - +
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Residues in contact with PHE 234 (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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230I GLN* 3.2 8.4 + - + +
231I TYR* 3.2 36.2 + + + +
233I ASP* 1.3 79.5 - - - +
235I LYS* 1.3 73.1 + - + +
238I TRP* 3.3 20.8 - + - +
91J LYS* 3.1 56.0 + - + -
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Residues in contact with LYS 235 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
231I TYR* 2.9 56.3 + - + +
232I LYS* 4.8 0.4 - - - -
234I PHE* 1.3 95.4 - - + +
236I ILE* 1.3 69.4 + - + +
238I TRP* 4.9 0.4 - - - -
239I TRP* 3.3 20.4 + - - -
254I ALA* 4.9 3.6 - - - +
259I LEU* 3.9 22.2 - - + +
341I TYR* 4.8 2.7 - - + +
83J PHE* 6.1 0.2 - - - -
87J GLU* 3.0 36.5 + - - +
91J LYS* 4.5 0.6 - - - +
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Residues in contact with ILE 236 (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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232I LYS* 2.8 48.3 + - + +
234I PHE 3.7 0.2 - - - -
235I LYS* 1.3 88.6 - - + +
237I HIS* 1.3 83.3 + - + +
238I TRP 3.2 2.1 + - - -
239I TRP* 3.4 13.1 + - + -
251I ARG* 3.1 31.9 - - + +
254I ALA* 5.0 10.1 - - + -
255I MET* 3.8 33.9 - - + +
259I LEU* 5.9 1.3 - - + -
341I TYR* 4.1 22.4 - - + -
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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