Contacts of the helix formed by residues 181 - 185 (chain B) in PDB entry 5FL6
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 ILE 181 (chain B).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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53B PHE* 3.0 39.1 + - + +
55B LEU* 4.0 11.2 - - + -
72B LEU* 3.8 14.4 - - + -
74B LEU* 3.7 30.3 - - + -
78B LEU* 4.0 7.2 - - + -
93B LEU* 3.7 23.3 - - + -
120B VAL* 5.0 7.0 - - + -
179B LEU* 3.8 31.0 - - + +
180B ASP* 1.3 72.1 - - - +
182B SER* 1.3 62.8 + - - +
184B LEU* 3.2 23.0 + - + +
185B LEU* 4.2 6.2 - - + +
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Residues in contact with SER 182 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
50B LEU* 5.1 5.8 - - - -
53B PHE* 3.8 20.5 - - - +
54B GLN* 4.4 7.3 - - - +
180B ASP* 2.7 23.9 + - - -
181B ILE* 1.3 78.8 - - - +
183B ALA* 1.3 55.9 + - - +
184B LEU 3.2 0.2 - - - -
185B LEU* 3.2 34.0 + - - +
189B PHE* 4.7 17.7 - - - -
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Residues in contact with ALA 183 (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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154B ASN* 5.1 2.1 + - - +
156B ALA* 3.6 21.8 - - + +
157B TYR* 5.0 0.9 - - - -
180B ASP* 3.2 28.6 + - + +
181B ILE 3.2 0.8 - - - -
182B SER* 1.3 77.4 + - - +
184B LEU* 1.3 57.8 + - - +
185B LEU 3.2 9.4 + - - +
217B VAL* 5.2 4.2 - - - +
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Residues in contact with LEU 184 (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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72B LEU* 5.5 0.2 - - + -
93B LEU* 3.6 30.3 - - + -
118B ILE* 4.1 13.2 - - + +
156B ALA* 3.7 32.8 - - + +
157B TYR* 2.6 57.1 + - + +
160B LEU* 4.2 13.2 - - + -
179B LEU* 4.3 13.2 - - + -
180B ASP 4.3 5.4 - - - +
181B ILE* 3.4 22.7 - - + +
182B SER 3.2 0.6 - - - -
183B ALA* 1.3 75.7 - - - +
185B LEU* 1.3 63.5 + - + +
186B PRO* 4.8 0.2 - - - +
217B VAL* 4.0 7.9 - - - +
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Residues in contact with LEU 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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50B LEU* 3.6 32.1 - - + -
53B PHE* 5.2 2.7 - - + -
118B ILE* 4.5 14.6 - - + -
120B VAL* 4.3 24.0 - - + -
143B LEU* 4.7 8.5 - - + +
145B ALA* 4.6 2.2 - - + +
181B ILE* 4.2 7.2 - - + +
182B SER* 3.2 23.5 + - - +
183B ALA* 3.2 6.4 - - - +
184B LEU* 1.3 87.8 - - + +
186B PRO* 1.3 76.2 - - + +
189B PHE* 4.2 14.1 - - + -
213B PHE* 4.3 20.2 - - + -
217B VAL* 4.9 6.4 - - - +
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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