Contacts of the strand formed by residues 186 - 192 (chain T) in PDB entry 2A2Q
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 CYS 186 (chain T).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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31L PHE* 3.7 10.3 - - - -
157T TYR* 3.1 5.9 - - - +
158T TRP* 2.8 68.7 + - + -
184T ASN 5.3 2.5 - - - -
185T TYR* 1.3 74.7 - - - +
187T PHE* 1.3 63.7 + - - +
207T VAL* 4.1 1.1 - - + -
208T GLU 3.6 3.6 - - - -
209T CYS* 2.0 45.1 - - - -
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Residues in contact with PHE 187 (chain T).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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113T ILE* 3.5 12.3 - - + +
116T PHE* 3.9 28.0 - + + -
123T VAL* 4.0 16.4 - - + -
125T VAL* 4.3 13.0 - - + -
155T LEU* 3.7 16.4 - - + -
156T TYR 3.5 5.8 - - - -
157T TYR* 3.5 18.6 - + + -
158T TRP* 5.0 1.1 - - - -
177T ILE* 3.8 22.4 - - + -
185T TYR* 3.7 36.6 - - + -
186T CYS* 1.3 74.4 - - - +
188T SER* 1.3 61.4 + - - +
207T VAL* 3.3 8.5 - - - +
208T GLU 2.8 49.9 + - - -
210T MET* 3.9 21.8 - - + -
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Residues in contact with SER 188 (chain T).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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39L LEU* 3.5 28.1 - - - +
113T ILE* 3.9 1.6 - - - -
155T LEU* 3.5 3.5 - - - +
156T TYR* 2.8 38.5 + - - +
187T PHE* 1.3 77.4 - - - +
189T VAL* 1.3 63.6 + - - +
204T ASP* 3.6 17.0 - - - +
205T SER* 2.9 30.2 + - - -
207T VAL* 4.1 5.2 - - - -
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Residues in contact with VAL 189 (chain T).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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111T PRO* 3.7 21.0 - - + +
113T ILE* 3.9 18.8 - - + +
125T VAL* 4.8 2.2 - - + -
127T VAL* 4.0 22.4 - - + -
153T TYR* 5.1 1.6 - - + -
154T THR 3.1 8.3 - - - +
155T LEU* 3.6 22.4 - - + -
156T TYR* 6.1 1.1 - - - -
175T PHE* 3.9 17.0 - - + -
188T SER* 1.3 77.0 + - - +
190T GLN* 1.3 63.4 + - - +
204T ASP* 3.6 2.6 - - - -
205T SER* 2.8 52.3 + - - +
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Residues in contact with GLN 190 (chain T).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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111T PRO* 4.0 1.3 - - - -
153T TYR* 3.3 11.4 - - - -
154T THR* 2.9 42.6 + - - +
156T TYR* 3.0 33.0 + - + -
189T VAL* 1.3 76.0 - - - +
191T ALA* 1.3 65.3 + - - +
192T VAL* 3.8 2.8 + - + +
201T LYS* 3.8 25.7 - - - +
202T SER* 3.0 27.6 + - - +
203T THR 4.0 0.2 - - - +
204T ASP* 3.2 37.2 + - - +
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Residues in contact with ALA 191 (chain T).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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108T LEU* 3.6 21.5 - - + -
111T PRO* 3.7 2.4 - - - +
130T GLU* 3.8 14.1 - - - +
143T LEU* 4.1 9.0 - - + -
151T LEU* 4.2 1.8 - - + -
152T ILE 3.9 0.7 - - - -
153T TYR* 3.6 25.6 - - + -
190T GLN* 1.3 72.1 - - - +
192T VAL* 1.3 61.1 + - - +
201T LYS* 3.3 4.3 - - - +
202T SER* 2.9 38.6 + - - +
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Residues in contact with VAL 192 (chain T).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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108T LEU* 3.8 0.6 - - - +
151T LEU* 3.5 5.1 - - - +
152T ILE* 2.9 47.1 + - + -
154T THR* 3.6 29.8 - - + +
190T GLN* 3.9 6.7 - - + +
191T ALA* 1.3 80.6 - - - +
193T ILE* 1.3 68.5 + - - +
194T PRO* 3.4 21.9 - - + +
200T ARG* 3.3 23.6 - - - +
201T LYS* 4.0 24.9 - - + +
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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