Contacts of the strand formed by residues 172 - 174 (chain F) in PDB entry 3E8C
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 LEU 172 (chain F).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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127F GLU* 3.6 0.9 - - - -
128F MET* 2.7 64.3 + - + +
150F ILE* 3.6 28.0 - - + -
164F TYR* 5.6 0.4 - - + +
167F LEU* 4.4 8.7 - - + -
168F LYS 3.6 13.7 - - - +
169F PRO 3.3 5.7 + - - +
170F GLU 3.4 0.4 - - - -
171F ASN* 1.3 84.3 - - + +
173F LEU* 1.3 59.8 + - - +
174F ILE* 4.6 0.2 - - - -
180F ILE* 3.8 11.0 - - + -
181F GLN 4.0 1.6 - - - -
182F VAL* 3.7 20.9 - - + -
227F LEU* 3.5 32.8 - - + -
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Residues in contact with LEU 173 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
104F VAL* 3.8 5.6 - - + -
123F VAL* 3.6 32.1 - - + -
126F GLY* 3.3 23.3 - - - +
127F GLU* 3.9 17.7 - - + -
170F GLU 4.9 0.2 - - - +
172F LEU* 1.3 74.5 - - - +
174F ILE* 1.3 61.5 + - - +
175F ASP 4.1 0.2 - - - -
180F ILE* 3.4 5.9 - - - -
181F GLN* 2.8 37.4 + - + +
183F THR* 3.7 27.6 - - + -
327F PHE* 4.7 1.1 - - + -
351F G96 3.5 47.6 - - + +
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Residues in contact with ILE 174 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
123F VAL* 3.3 6.4 - - - +
125F GLY* 3.2 28.1 - - - +
126F GLY 2.9 14.6 + - - +
128F MET* 3.9 29.6 - - + +
131F HIS* 4.2 11.4 - - + -
146F TYR* 4.3 19.1 - - + +
172F LEU 4.1 0.2 - - - +
173F LEU* 1.3 78.7 - - - +
175F ASP* 1.3 63.0 + - - +
178F GLY* 3.8 28.9 - - - +
179F TYR 3.6 1.3 - - - -
180F ILE* 3.5 27.8 - - + -
314F PHE* 4.6 5.6 - - + +
316F PRO* 3.9 18.2 - - + -
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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
------------------------------------------------------------
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