Contacts of the strand formed by residues 253 - 255 (chain E) in PDB entry 2POZ
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 253 (chain E).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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229E PHE* 4.9 1.1 - - - -
230E VAL* 3.5 7.9 - - + +
233E PRO* 3.7 28.3 - - + -
242E LEU* 3.9 18.6 - - + -
245E ILE* 4.0 8.3 - - + -
246E SER* 3.6 40.8 - - - +
249E ILE* 3.8 23.8 - - + -
251E LEU 4.0 1.8 - - - +
252E PRO* 1.3 77.4 - - - +
254E ALA* 1.3 64.9 + - - +
255E VAL* 3.9 8.1 - - + -
273E ALA 4.2 10.9 + - - +
274E CYS* 3.7 6.0 - - - +
275E GLY* 3.2 26.3 + - - +
276E ILE* 3.4 7.5 + - - +
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Residues in contact with ALA 254 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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229E PHE* 3.6 28.3 - - + -
230E VAL 3.0 5.2 + - - +
231E GLU* 3.2 3.0 - - - -
232E GLU 2.9 25.8 + - - -
253E ILE* 1.3 75.7 - - - +
255E VAL* 1.3 64.4 + - - +
276E ILE* 3.3 22.7 - - + +
278E GLN* 3.6 22.6 - - - +
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Residues in contact with VAL 255 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
232E GLU* 4.3 21.8 - - + +
233E PRO* 4.4 0.2 - - + -
242E LEU* 4.1 14.4 - - + -
253E ILE* 3.9 16.8 - - + -
254E ALA* 1.3 80.8 - - - +
256E GLY* 1.3 57.8 + - - +
257E GLU 3.9 0.9 - - - -
259E VAL* 5.2 2.7 - - + -
265E PHE* 5.7 0.2 - - + -
268E ILE* 3.9 28.9 - - + -
274E CYS* 3.6 24.9 - - + -
276E ILE 3.3 3.4 + - - +
277E ILE* 3.0 10.9 - - + +
278E GLN* 2.6 32.5 + - - -
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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
------------------------------------------------------------
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