Contacts of the helix formed by residues 285 - 290 (chain A) in PDB entry 1VLP
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 PRO 285 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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257A ILE* 5.9 0.9 - - + -
284A PRO* 1.3 84.6 - - + +
286A TYR* 1.3 92.7 + - + +
287A SER 3.3 2.5 - - - -
288A ASP* 3.0 11.8 + - + +
289A ALA* 3.0 24.0 + - + +
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Residues in contact with TYR 286 (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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250A LYS* 3.0 37.7 + - + -
253A MSE 3.6 41.7 - - + -
254A ASP* 2.6 32.6 + - - -
257A ILE* 3.7 22.4 - - + -
281A SER 3.7 15.5 - - - +
282A PHE* 4.1 5.4 - - + -
283A ARG* 3.0 14.3 + - + +
284A PRO 4.6 0.9 - - - -
285A PRO* 1.3 95.0 - - + +
287A SER* 1.3 62.2 + - - +
289A ALA* 3.1 5.9 + - - +
290A TYR* 3.1 31.8 + - + -
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Residues in contact with SER 287 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
282A PHE* 3.8 23.6 - - - -
283A ARG* 3.0 28.9 + - - -
284A PRO* 3.0 11.3 - - - +
286A TYR* 1.3 77.4 - - - +
288A ASP* 1.3 60.4 + - - +
290A TYR 3.6 3.7 - - - +
311A TYR* 4.3 4.3 - - - -
315A LEU* 3.4 28.5 - - - +
317A LEU* 4.8 1.2 - - - +
322A LYS* 3.1 26.2 + - - -
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Residues in contact with ASP 288 (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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284A PRO* 3.4 30.9 - - - +
285A PRO* 3.0 10.8 + - + +
287A SER* 1.3 82.6 + - - +
289A ALA* 1.3 63.0 + - - +
290A TYR 4.3 0.2 - - - -
291A VAL* 5.7 1.0 - - - +
317A LEU* 4.5 18.0 - - - +
322A LYS* 3.3 16.4 + - - +
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Residues in contact with ALA 289 (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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257A ILE* 4.4 12.3 - - + -
262A ALA* 3.5 46.1 - - + +
263A LYS* 4.6 5.2 - - - +
265A ALA* 4.1 8.1 + - + +
266A GLY 4.8 0.7 + - - +
285A PRO* 3.0 15.5 + - + +
286A TYR 3.1 3.8 + - - +
288A ASP* 1.3 76.3 - - - +
290A TYR* 1.3 65.3 + - - +
291A VAL* 3.5 10.4 + - - +
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Residues in contact with TYR 290 (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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230A VAL* 5.7 4.9 - - + +
253A MSE 3.6 46.0 + - + +
256A TRP* 3.9 16.7 - + - +
257A ILE* 4.1 16.2 - - + -
265A ALA* 3.5 26.7 - - + -
266A GLY 3.3 22.4 - - - +
267A LEU 3.7 2.9 - - - -
268A ALA* 3.5 28.5 - - + -
282A PHE* 4.1 17.7 - + + -
286A TYR* 3.1 24.8 + - - +
287A SER 3.6 5.2 - - - +
289A ALA* 1.3 78.7 - - + +
291A VAL* 1.3 60.5 + - - +
292A GLY 3.2 12.7 + - - +
311A TYR* 4.9 0.9 + - - -
322A LYS* 2.9 22.5 + - - -
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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