Contacts of the strand formed by residues 224 - 228 (chain D) in PDB entry 1C2O
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 ARG 224 (chain D).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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195D MET 5.6 0.6 + - - -
196D SER* 3.5 29.9 - - - +
197D VAL 3.2 4.4 + - - -
198D THR* 2.9 23.9 + - - +
199D LEU 3.1 19.8 + - - -
222D PHE* 3.5 11.6 - - - -
223D HIS* 1.3 93.4 - - - +
225D ALA* 1.3 59.7 + - - +
324D LEU* 5.0 0.4 - - - -
325D GLN* 3.1 45.1 + - + +
483D PHE* 3.1 25.4 + - + -
484D ALA 2.6 30.7 + - - -
485D ARG 3.5 14.5 + - - -
486D THR 4.8 1.8 + - - -
487D GLY* 3.4 8.6 - - - +
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Residues in contact with ALA 225 (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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199D LEU* 3.4 7.6 - - + +
209D VAL* 3.7 21.8 - - + -
213D ILE* 3.9 20.6 - - + -
222D PHE* 4.4 8.3 - - + -
224D ARG* 1.3 77.0 - - - +
226D VAL* 1.3 64.0 + - - +
227D LEU* 4.3 3.8 - - + -
324D LEU* 4.5 2.2 - - + -
325D GLN 3.4 9.8 + - - +
326D VAL* 3.2 6.5 - - + +
327D LEU 2.9 23.2 + - - +
483D PHE* 3.4 3.1 - - - -
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Residues in contact with VAL 226 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
198D THR* 4.3 6.7 - - + -
199D LEU 2.9 6.2 + - - +
200D PHE* 3.5 22.7 - - + -
201D GLY 3.7 5.1 + - - -
209D VAL* 3.6 19.4 - - - +
225D ALA* 1.3 77.4 - - - +
227D LEU* 1.3 71.8 + - - +
228D GLN* 3.9 17.7 - - + +
327D LEU* 3.3 20.6 - - + +
428D TYR* 5.4 0.2 - - + -
480D TRP* 3.2 39.3 - - + +
483D PHE* 4.0 20.4 - - + -
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Residues in contact with LEU 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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201D GLY 3.8 4.5 - - - -
206D ALA* 3.8 23.8 - - + +
209D VAL* 4.1 11.4 - - + -
210D GLY* 3.9 16.4 - - - -
213D ILE* 4.6 6.7 - - + -
225D ALA* 4.3 3.4 - - + -
226D VAL* 1.3 86.1 - - - +
228D GLN* 1.3 62.5 + - - +
229D SER 3.9 0.5 + - - -
230D GLY 3.8 16.7 + - - +
231D THR* 5.8 0.2 - - + -
232D PRO* 4.3 3.4 - - + -
326D VAL* 3.5 30.1 - - + -
327D LEU 3.0 8.0 + - - +
328D VAL* 3.6 12.3 - - + +
329D GLY 3.4 21.0 + - - +
414D LEU* 3.7 26.2 - - + -
418D LEU* 5.9 0.2 - - + -
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Residues in contact with GLN 228 (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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117D TRP* 4.0 10.9 - - - -
200D PHE* 3.6 19.4 - - - -
201D GLY 2.9 17.7 + - - +
202D GLU* 3.1 25.0 - - + +
203D SER 3.1 1.0 + - - -
206D ALA* 3.4 0.9 - - - +
226D VAL* 3.9 13.4 - - + +
227D LEU* 1.3 72.2 - - - +
229D SER* 1.3 71.4 + - - +
230D GLY 3.0 2.6 + - - -
428D TYR* 3.4 18.2 + - - +
450D GLU* 2.7 41.2 + - - +
451D ILE* 5.0 3.2 - - - +
454D ILE* 4.0 10.3 - - - +
480D TRP* 3.5 24.2 + - + -
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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