Contacts of the helix formed by residues 176 - 180 (chain F) in PDB entry 3HYW
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 176 (chain F).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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139F LEU 4.9 0.2 - - - +
140F TYR* 3.9 38.6 - - + +
143F PRO* 4.5 11.0 - - + -
171F LEU* 2.9 34.5 + - + +
174F ARG* 3.7 22.9 - - + +
175F GLY* 1.3 82.6 - - - +
177F ARG* 1.3 59.8 + - - +
178F TYR* 3.2 7.6 - - + -
179F LYS* 2.9 43.1 + - + +
180F VAL* 3.4 10.9 - - + +
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Residues in contact with ARG 177 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
366D PRO* 3.7 15.7 - - - +
367D ARG 3.4 20.6 + - - +
368D GLU* 3.5 17.1 + - - +
168F HIS* 3.0 28.8 + - + +
171F LEU* 3.3 24.7 + - + +
172F LYS* 3.9 11.9 - - + -
176F ILE* 1.3 77.1 - - - +
178F TYR* 1.3 57.8 + - - +
179F LYS 3.0 0.2 - - - -
180F VAL* 2.9 57.5 + - - +
182F MET* 3.4 38.7 - - - +
213F ARG 2.9 28.3 + - - -
214F ASN* 3.2 21.2 + - - +
215F ILE* 4.4 1.4 - - - +
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Residues in contact with TYR 178 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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342D ARG* 3.5 32.1 - - - +
362D PRO* 3.9 19.1 - - + -
366D PRO* 3.4 25.4 - - - +
367D ARG 4.6 0.8 + - - -
368D GLU* 3.1 22.6 + - - +
417D GLU* 2.8 27.8 + - - -
429D ARG* 2.7 58.8 + - + -
175F GLY 3.6 19.7 - - - -
176F ILE* 3.2 1.7 - - + -
177F ARG* 1.3 75.7 - - - +
179F LYS* 1.3 88.8 + - + +
180F VAL 3.4 0.4 - - - -
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Residues in contact with LYS 179 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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366D PRO* 4.3 0.9 - - - -
429D ARG* 4.1 17.7 - - + -
430D CYS 4.5 16.3 + - - +
143F PRO* 3.9 34.1 - - + +
144F GLY* 4.1 6.1 + - - -
176F ILE* 2.9 23.8 + - + +
178F TYR* 1.3 116.6 + - + +
180F VAL* 1.3 62.3 + - - +
181F PRO* 3.5 10.7 - - - +
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Residues in contact with VAL 180 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
366D PRO* 3.5 4.1 - - - +
139F LEU* 4.8 4.3 - - + -
143F PRO* 3.9 18.2 - - + -
144F GLY 3.5 16.4 - - - +
146F VAL* 3.6 24.7 - - + -
171F LEU* 3.7 37.0 - - + -
176F ILE* 3.4 14.8 - - + +
177F ARG* 2.9 36.3 + - - +
178F TYR 3.4 0.6 - - - -
179F LYS* 1.3 84.0 - - - +
181F PRO* 1.3 63.3 - - - +
182F MET* 4.2 1.8 - - + -
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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