Contacts of the strand formed by residues 218 - 222 (chain A) in PDB entry 2VOA
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 218 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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6A THR* 4.8 11.9 + - + +
7A PHE* 5.9 0.8 - - - -
8A ASN* 4.3 6.2 + - - +
34A GLN* 4.4 2.3 - - - +
145A GLY 3.3 8.3 - - - +
146A ASP* 3.3 28.5 + - - +
199A THR* 2.7 34.5 + - + +
200A PHE* 4.6 0.5 - - - +
216A ARG* 3.0 27.0 + - - -
217A GLY* 1.3 80.5 + - - +
219A ALA* 1.3 62.2 + - - +
248A HIS* 2.9 31.7 + - - -
249A LEU 5.2 3.6 - - - +
251A LEU* 3.7 7.1 - - + +
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Residues in contact with ALA 219 (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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6A THR* 3.8 2.6 - - - +
144A CYS* 3.4 3.5 - - - -
145A GLY 3.1 31.9 + - - +
147A MET* 4.0 5.6 - - + +
176A TYR* 3.5 24.9 - - - +
186A ASP* 4.1 1.6 - - - +
216A ARG* 3.6 13.9 - - - +
217A GLY 4.3 0.6 + - - +
218A ASP* 1.3 76.5 - - - +
220A ILE* 1.3 65.8 + - - +
221A LEU* 3.7 17.9 - - + -
251A LEU* 3.7 7.4 - - - +
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Residues in contact with ILE 220 (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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4A ILE* 3.4 28.0 - - + +
5A ALA* 4.3 2.7 - - - -
6A THR* 3.7 12.8 - - + -
142A VAL* 4.8 7.2 - - + -
143A TRP 3.9 2.2 - - - -
144A CYS* 4.0 18.6 - - - +
186A ASP* 4.0 2.3 + - - +
187A VAL* 3.3 43.1 + - + +
188A LEU 4.8 0.8 + - - +
219A ALA* 1.3 78.5 - - - +
221A LEU* 1.3 68.6 + - - +
233A CYS* 5.0 0.7 - - - -
251A LEU* 3.5 34.0 - - + +
252A VAL 4.0 1.1 - - - -
253A ALA* 3.7 19.5 - - + +
255A PHE* 4.5 10.8 - - + -
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Residues in contact with LEU 221 (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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142A VAL* 3.3 4.9 - - - +
143A TRP* 2.7 57.9 + - + +
147A MET* 3.4 26.7 - - + -
176A TYR* 3.6 13.2 - - - +
180A LEU* 3.8 25.8 - - + -
184A PHE* 3.7 21.6 - - + -
185A VAL 3.2 2.0 - - - -
186A ASP* 3.4 39.3 - - + +
219A ALA* 3.7 6.7 - - + -
220A ILE* 1.3 76.3 - - - +
222A ALA* 1.3 61.8 + - - +
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Residues in contact with ALA 222 (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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141A ALA 3.5 8.3 - - - +
142A VAL* 4.5 1.8 - - + +
184A PHE* 3.6 5.1 - - - -
185A VAL* 2.8 38.1 + - - +
187A VAL* 4.0 19.1 - - + -
220A ILE* 4.0 0.9 + - + -
221A LEU* 1.3 75.3 - - - +
223A THR* 1.3 65.2 + - - +
226A LEU* 4.2 7.0 - - + -
227A ALA* 3.8 20.2 - - - +
255A PHE* 4.1 15.3 - - + -
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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