Contacts of the helix formed by residues 244 - 248 (chain B) in PDB entry 3I58
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 VAL 244 (chain B).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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176B VAL 3.7 22.2 - - - +
177B GLY* 4.2 6.7 - - - +
228B PHE* 3.7 30.3 - - + -
241B LEU* 4.2 19.9 + - + -
242B SER 3.2 18.1 - - - +
243B ALA* 1.3 78.3 - - - +
245B LEU* 1.3 64.0 + - + +
246B HIS 3.2 1.8 - - - -
247B ASP* 2.8 27.0 + - - +
248B TRP* 3.1 20.9 - - + +
256B ILE* 4.3 6.3 - - + -
274B GLU* 3.9 1.2 + - - -
401B SAH 4.1 17.3 - - + +
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Residues in contact with LEU 245 (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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241B LEU* 4.2 21.2 + - + -
244B VAL* 1.3 76.9 - - - +
246B HIS* 1.3 57.8 + - - +
247B ASP 3.0 4.5 + - - -
248B TRP* 3.1 15.1 + - - +
253B ALA* 3.9 36.7 - - + +
256B ILE* 4.5 12.3 - - + -
257B LEU* 4.2 18.8 - - + -
272B VAL* 3.6 38.1 - - + -
274B GLU* 3.5 13.5 + - - +
299B ARG* 3.3 19.7 + - - +
304B LEU* 4.4 16.2 - - + -
307B LEU* 5.7 1.3 - - + -
329B MET* 5.4 0.2 - - + -
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Residues in contact with HIS 246 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
243B ALA* 3.7 14.7 - - - +
245B LEU* 1.3 77.5 - - - +
247B ASP* 1.3 87.3 + - - +
248B TRP 3.3 0.9 - - - -
274B GLU* 3.3 36.4 + - + +
275B ALA* 5.3 2.9 - - + -
286B MET* 5.8 0.8 - - - +
290B MET* 3.3 32.3 - - + +
296B GLY* 3.5 1.7 - - - -
297B LYS 3.2 43.7 + - - +
298B GLU* 3.8 20.8 + - - +
299B ARG* 5.2 0.2 - - - +
402B 7NA 3.1 39.1 - + - -
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Residues in contact with ASP 247 (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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133B TRP* 3.7 12.1 - - + -
146B PHE* 5.7 0.2 - - - -
243B ALA 3.4 13.6 - - - +
244B VAL* 2.8 15.3 + - - +
246B HIS* 1.3 111.0 + - - +
248B TRP* 1.3 75.6 + - + +
290B MET* 3.6 7.1 - - - +
294B PHE* 3.1 52.5 - - + +
296B GLY* 4.0 2.1 - - - -
401B SAH 3.5 21.8 - - - +
402B 7NA 4.5 3.4 - - - -
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Residues in contact with TRP 248 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
133B TRP* 3.4 39.1 - + - +
228B PHE* 3.7 21.6 - + - -
229B PHE* 3.7 21.8 - + - -
244B VAL* 3.1 30.2 + - - +
245B LEU* 3.1 5.5 + - - +
246B HIS 3.3 0.4 - - - -
247B ASP* 1.3 92.1 + - - +
249B ASP* 1.3 59.4 + - - +
252B SER* 3.6 30.7 - - - -
253B ALA* 3.9 7.2 - - - +
256B ILE* 3.5 17.3 - - + -
294B PHE* 5.2 3.8 - - + -
296B GLY* 3.7 10.7 - - - -
297B LYS 4.3 0.2 + - - -
299B ARG* 2.4 33.3 + - - -
401B SAH 3.9 18.4 - - - -
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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
------------------------------------------------------------
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