Contacts of the helix formed by residues 230 - 235 (chain A) in PDB entry 2V5E
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 230 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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174A TYR* 3.9 7.2 - - + -
175A ILE* 3.7 31.2 - - + -
178A CYS* 3.6 41.1 - - + +
179A THR* 4.1 12.8 - - + -
227A GLN* 2.9 14.7 + - - +
229A ILE* 1.3 80.0 - - - +
231A PRO* 1.4 62.9 - - - +
232A VAL* 3.2 5.2 - - + +
233A CYS* 2.9 24.7 + - + +
234A SER 3.2 8.0 + - - -
120B TYR* 3.8 16.2 - - + -
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Residues in contact with PRO 231 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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226A ARG* 3.3 36.1 - - - +
227A GLN* 3.5 27.1 - - - +
229A ILE* 3.8 4.5 - - + +
230A VAL* 1.4 88.0 - - - +
232A VAL* 1.3 62.4 + - + +
234A SER* 3.7 4.3 - - - +
235A TYR* 3.0 28.2 + - + -
236A GLU* 2.9 34.2 + - + +
300A ASN* 3.7 17.5 - - - +
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Residues in contact with VAL 232 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
186A VAL* 3.6 33.4 - - + +
227A GLN* 4.8 13.5 - - - +
230A VAL* 3.0 5.5 + - + +
231A PRO* 1.3 78.5 - - + +
233A CYS* 1.3 59.5 + - + +
236A GLU* 3.9 32.5 - - - +
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Residues in contact with CYS 233 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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178A CYS 3.2 20.6 - - - +
186A VAL* 4.3 4.2 - - + +
187A CYS* 2.0 52.9 - - + -
189A ARG* 3.4 25.4 + - - +
192A CYS* 3.4 33.0 - - - -
230A VAL* 2.9 8.8 + - + +
232A VAL* 1.3 81.3 - - + +
234A SER* 1.3 58.6 + - - +
235A TYR 3.5 1.1 - - - -
236A GLU 4.5 1.0 - - - +
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Residues in contact with SER 234 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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189A ARG* 3.4 13.0 + - - -
192A CYS* 3.8 8.1 - - - -
193A HIS* 2.8 31.2 + - - -
196A LEU* 3.6 21.3 - - - -
229A ILE* 2.7 39.0 + - - +
230A VAL 3.2 3.8 + - - -
231A PRO* 3.7 5.0 - - - +
233A CYS* 1.3 78.1 - - - +
235A TYR* 1.3 58.2 + - - +
298A THR* 3.5 10.2 - - - +
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Residues in contact with TYR 235 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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189A ARG* 3.5 11.2 + - - +
226A ARG* 6.2 0.7 - - - -
229A ILE* 4.2 4.3 - - + -
231A PRO* 3.0 26.8 + - + +
234A SER* 1.3 83.0 - - - +
236A GLU* 1.3 70.2 + - + +
240A ARG* 5.3 1.0 + - - -
298A THR* 3.3 25.6 - - + -
300A ASN* 3.7 30.7 + - + -
301A TYR 4.8 4.7 - - - -
302A VAL* 3.5 21.4 - - + +
310A ALA 2.7 29.6 + - - -
311A PRO 3.6 5.2 + - - -
312A TRP* 3.3 65.6 - + + +
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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