Contacts of the helix formed by residues 154 - 162 (chain K) in PDB entry 3J8C
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 154 (chain K).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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153K ILE* 1.3 73.6 - - - +
155K ARG* 1.3 65.8 + - - +
156K TRP* 4.4 4.3 - - + +
157K LEU* 3.2 22.1 + - + +
158K LEU* 3.1 22.2 + - - +
186K GLN* 5.7 3.8 - - - -
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Residues in contact with ARG 155 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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153K ILE 3.4 3.7 + - - -
154K ASP* 1.3 71.8 - - - +
156K TRP* 1.3 62.2 + - - +
158K LEU* 3.5 6.0 + - - +
159K ALA* 3.3 21.8 + - - +
170K LEU* 5.7 2.6 - - - +
186K GLN* 5.1 6.7 - - - +
187K ILE* 4.8 22.2 - - + +
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Residues in contact with TRP 156 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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154K ASP* 3.2 5.0 - - + +
155K ARG* 1.3 78.2 - - - +
157K LEU* 1.3 62.2 + - - +
159K ALA* 3.4 7.9 + - - +
160K GLU* 3.1 22.0 + - - +
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Residues in contact with LEU 157 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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153K ILE* 5.7 2.0 - - + -
154K ASP* 3.2 25.9 + - + +
156K TRP* 1.3 77.9 - - - +
158K LEU* 1.3 65.8 + - - +
160K GLU* 3.2 8.5 + - - +
161K MET* 3.0 23.8 + - - +
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Residues in contact with LEU 158 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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153K ILE* 5.3 9.6 - - + +
154K ASP 3.1 15.0 + - - +
155K ARG* 3.9 6.3 - - - +
156K TRP 3.4 0.2 - - - -
157K LEU* 1.3 74.7 - - - +
159K ALA* 1.3 57.8 + - - +
161K MET* 3.3 8.2 + - - +
162K LEU* 3.0 30.2 + - - +
170K LEU* 6.5 0.2 - - + -
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Residues in contact with ALA 159 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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155K ARG 3.3 11.0 + - - +
156K TRP* 3.7 9.9 - - - +
157K LEU 3.3 0.4 - - - -
158K LEU* 1.3 79.6 - - - +
160K GLU* 1.3 60.7 + - - +
162K LEU* 3.4 11.4 + - - +
163K GLY 3.4 0.7 + - - -
164K ASP* 2.8 22.4 + - - -
165K LEU* 3.1 34.7 + - + +
166K SER 5.7 0.2 - - - -
167K ASP* 6.3 0.2 - - - -
170K LEU* 4.5 15.0 - - + +
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Residues in contact with GLU 160 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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114K PHE 5.5 0.2 - - - +
115K GLN* 5.2 9.9 - - + -
118K TRP* 5.2 4.3 - - - +
156K TRP 3.1 13.9 + - - +
157K LEU* 3.2 11.6 + - - +
159K ALA* 1.3 77.0 - - - +
161K MET* 1.3 58.3 + - - +
163K GLY* 2.9 19.1 + - - -
164K ASP* 3.3 12.8 + - - +
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Residues in contact with MET 161 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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114K PHE* 3.8 32.8 - - + +
115K GLN* 5.1 5.6 - - - +
142K ILE* 4.7 12.2 - - + +
157K LEU 3.0 15.9 + - - +
158K LEU* 3.7 7.6 - - - +
160K GLU* 1.3 76.1 - - - +
162K LEU* 1.3 58.2 + - - +
163K GLY 3.2 1.3 + - - -
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Residues in contact with LEU 162 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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139K ARG* 5.1 19.5 - - + +
142K ILE* 5.6 4.7 - - + -
158K LEU 3.0 15.4 + - - +
159K ALA* 3.8 8.3 - - - +
160K GLU 3.1 0.6 - - - -
161K MET* 1.3 77.7 - - - +
163K GLY* 1.3 58.3 + - - +
165K LEU* 5.1 9.8 - - + +
170K LEU* 6.5 0.9 - - - -
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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