Contacts of the helix formed by residues 184 - 189 (chain B) in PDB entry 1F5Q
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 184 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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180B CYS 3.3 2.7 + - - +
181B ALA 2.8 7.8 + - - +
183B CYS* 1.3 79.3 - - - +
185B GLY* 1.3 55.1 + - - +
186B ARG* 3.3 34.8 + - - +
187B SER* 3.1 17.7 + - - +
188B ALA* 2.7 35.0 + - - +
235B LEU* 4.9 1.6 - - - +
238B ILE* 4.6 9.1 - - - +
239B ALA* 3.6 24.1 + - + +
242B SER* 3.5 20.1 + - - -
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Residues in contact with GLY 185 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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44B PHE* 3.0 48.3 + - - +
45B THR* 5.9 0.2 - - - -
49B ARG* 4.2 5.4 - - - +
50B LYS* 6.2 1.4 - - - +
183B CYS 3.8 3.8 + - - -
184B ASP* 1.3 73.7 - - - +
186B ARG* 1.3 61.9 + - - +
187B SER 3.1 1.5 + - - -
188B ALA* 4.3 0.9 - - - -
189B MET* 3.5 26.3 + - - +
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Residues in contact with ARG 186 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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44B PHE 4.4 1.0 + - - -
45B THR* 4.3 39.0 + - + +
50B LYS* 5.9 4.4 - - - +
184B ASP* 3.2 16.6 + - - +
185B GLY* 1.3 78.1 - - - +
187B SER* 1.3 57.5 + - - +
189B MET* 4.5 11.9 - - - +
190B LYS* 4.2 6.9 - - - +
235B LEU* 3.2 32.8 - - + +
238B ILE* 6.3 4.7 - - + -
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Residues in contact with SER 187 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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181B ALA* 2.7 37.6 + - - +
184B ASP* 3.1 15.1 + - - +
186B ARG* 1.3 76.4 - - - +
188B ALA* 1.3 62.9 + - - +
189B MET 3.3 2.5 - - - -
190B LYS* 3.5 9.5 - - - +
195B ILE* 3.1 24.9 - - - +
232B CYS* 6.1 0.7 - - - -
235B LEU* 3.9 34.5 - - - -
236B VAL* 4.5 3.8 - - - -
239B ALA* 3.6 1.6 - - - +
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Residues in contact with ALA 188 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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44B PHE* 4.1 7.7 - - + -
49B ARG* 3.5 18.2 - - - +
78B ASP* 5.1 1.9 - - - +
181B ALA 3.3 12.8 + - - +
182B LEU* 3.3 29.1 - - + +
184B ASP 2.7 23.8 + - - +
185B GLY* 3.6 2.4 + - - -
187B SER* 1.3 71.2 - - - +
189B MET* 1.3 56.1 + - - +
190B LYS 3.2 11.5 + - - +
195B ILE* 4.5 5.9 - - - +
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Residues in contact with MET 189 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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31B HIS* 3.1 22.4 + - - -
35B MET* 3.9 9.5 - - - +
40B VAL* 3.6 27.8 - - + -
41B ASP* 3.7 33.9 - - - +
44B PHE* 3.8 29.4 - - + -
45B THR* 5.8 3.6 - - - -
185B GLY 3.5 20.4 + - - +
186B ARG* 4.5 12.8 - - - +
188B ALA* 1.3 76.6 - - - +
190B LYS* 1.3 67.3 + - + +
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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