Contacts of the strand formed by residues 225 - 232 (chain A) in PDB entry 2I6V
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 VAL 225 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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221A ILE* 3.1 32.8 + - + +
222A PHE* 3.6 12.8 - - - +
224A TYR* 1.3 85.7 - - + +
226A ARG* 1.3 78.6 - - - +
227A LEU* 3.9 21.7 - - + +
241A VAL* 3.8 20.9 - - + -
242A SER 3.6 7.2 - - - +
244A GLY* 3.5 10.2 - - - +
255A LEU* 3.9 14.4 - - + -
290A LEU* 4.9 10.5 - - + -
303A ILE* 5.3 4.0 - - + -
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Residues in contact with ARG 226 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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222A PHE* 4.7 9.2 + - + +
225A VAL* 1.3 84.4 - - - +
227A LEU* 1.3 64.6 + - - +
240A ARG 3.6 0.2 - - - +
242A SER* 2.9 43.7 + - - +
243A PRO 3.4 21.7 + - - +
244A GLY* 4.2 8.0 + - - -
245A LYS* 3.8 31.9 - - - +
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Residues in contact with LEU 227 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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221A ILE* 5.6 5.4 - - + -
225A VAL* 3.9 26.2 - - + +
226A ARG* 1.3 84.9 - - - +
228A SER* 1.3 62.5 + - - +
239A TYR* 4.0 30.5 - - + -
240A ARG 3.4 9.0 - - - +
241A VAL* 4.1 12.8 - - + -
261A ALA* 4.4 6.5 - - + -
269A LEU* 5.1 15.7 - - + -
290A LEU* 5.3 6.1 - - + -
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Residues in contact with SER 228 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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227A LEU* 1.3 76.9 - - - +
229A GLN* 1.3 65.4 + - - +
239A TYR* 3.2 8.3 - - - -
240A ARG* 2.8 53.3 + - - +
242A SER* 5.3 2.8 + - - -
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Residues in contact with GLN 229 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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228A SER* 1.3 77.3 + - - +
230A VAL* 1.3 63.5 + - - +
231A LYS* 2.8 44.4 + - + +
236A VAL* 4.0 17.5 - - + +
238A GLY 3.9 5.2 - - - -
239A TYR* 3.8 23.9 + - + -
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Residues in contact with VAL 230 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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229A GLN* 1.3 77.6 - - - +
231A LYS* 1.3 56.5 + - - +
236A VAL* 3.7 0.9 - - - -
237A LEU* 2.7 49.7 + - + +
238A GLY 2.9 13.1 + - - +
240A ARG* 3.9 17.5 - - + +
260A MET* 3.7 38.1 - - + -
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Residues in contact with LYS 231 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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229A GLN* 2.8 41.2 + - + +
230A VAL* 1.3 81.5 - - - +
232A ARG* 1.3 59.9 + - - +
233A ASP 3.6 22.1 + - - +
234A ASP* 4.1 23.1 - - - +
235A LYS 3.1 9.6 - - - +
236A VAL* 3.8 20.6 - - + -
237A LEU* 4.0 7.9 - - - +
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Residues in contact with ARG 232 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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231A LYS* 1.3 70.5 - - - +
233A ASP* 1.3 107.9 + - - +
235A LYS* 2.8 54.8 + - + +
237A LEU* 3.7 23.8 - - + +
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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