Contacts of the helix formed by residues 189 - 196 (chain A) in PDB entry 2C56
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 GLY 189 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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188A TRP* 1.3 74.6 - - - +
190A THR* 1.3 65.7 + - - -
191A HIS 3.5 2.9 + - - -
192A ALA 3.6 0.2 + - - -
193A GLN* 3.2 29.2 + - - +
208A PHE 2.9 15.4 + - - -
209A SER* 3.6 3.5 - - - -
210A ASN* 3.8 27.8 - - - -
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Residues in contact with THR 190 (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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189A GLY* 1.3 71.6 - - - -
191A HIS* 1.3 59.9 + - - +
193A GLN* 3.2 9.2 + - - +
194A ASN* 2.9 50.5 + - - +
210A ASN* 5.0 2.0 - - - +
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Residues in contact with HIS 191 (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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86A GLY 4.5 1.3 - - - -
87A GLN* 3.3 53.6 + - + +
148A THR* 2.8 37.1 + - + +
149A THR* 5.9 1.3 - - - -
161A SER* 6.6 0.4 - - - -
166A ASP* 5.7 5.6 - - + -
189A GLY 3.5 0.4 - - - -
190A THR* 1.3 81.3 - - - +
192A ALA* 1.3 65.4 + - - +
194A ASN* 3.2 7.3 + - - +
195A ALA* 3.0 26.1 + - + +
210A ASN* 5.8 1.7 - - - +
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Residues in contact with ALA 192 (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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85A ILE* 3.8 36.6 - - + +
86A GLY 5.9 0.7 - - - -
187A LEU* 4.0 11.8 - - - +
188A TRP 3.5 36.2 + - - +
189A GLY 3.6 1.6 + - - +
190A THR 3.4 0.4 - - - -
191A HIS* 1.3 80.5 - - - +
193A GLN* 1.3 62.6 + - - +
195A ALA* 3.3 10.6 + - - +
196A ILE* 3.3 14.2 + - - +
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Residues in contact with GLN 193 (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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187A LEU* 3.0 32.5 + - + +
189A GLY* 3.2 19.2 + - - +
190A THR* 3.2 8.3 + - - +
192A ALA* 1.3 78.1 - - - +
194A ASN* 1.3 64.0 + - - +
196A ILE 3.3 14.4 - - - +
197A ARG* 3.7 10.2 + - - +
207A LYS* 3.6 36.1 + - + +
208A PHE 2.9 34.6 + - - +
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Residues in contact with ASN 194 (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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190A THR* 2.9 38.1 + - - +
191A HIS* 3.2 7.2 + - - +
193A GLN* 1.3 79.6 - - - +
195A ALA* 1.3 62.1 + - - +
197A ARG* 3.1 33.2 + - - +
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Residues in contact with ALA 195 (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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148A THR* 4.1 16.4 - - + -
166A ASP* 6.1 3.8 - - + +
170A GLY* 5.4 4.9 - - - -
174A ARG* 5.5 4.5 + - - -
191A HIS* 3.0 23.7 + - + +
192A ALA 3.3 2.4 + - - +
194A ASN* 1.3 80.5 - - - +
196A ILE* 1.3 78.9 + - + +
197A ARG* 4.3 1.2 + - - -
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Residues in contact with ILE 196 (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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85A ILE* 4.3 10.3 - - + -
148A THR* 4.1 15.7 - - + -
169A VAL* 5.9 0.2 - - + -
170A GLY* 5.4 7.0 - - - -
173A ILE* 3.8 34.3 - - + -
185A PHE* 4.0 20.0 - - + -
187A LEU* 3.5 19.8 - - + +
192A ALA 3.3 9.3 + - - +
193A GLN 3.3 13.7 - - - +
195A ALA* 1.3 102.4 - - + +
197A ARG* 1.3 60.7 - - - +
198A PRO* 3.4 30.7 - - + +
207A LYS* 5.9 0.3 - - - -
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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