Contacts of the strand formed by residues 295 - 297 (chain A) in PDB entry 2PGW
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 295 (chain A).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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256A VAL* 5.6 0.9 - - + -
267A MSE 4.7 0.4 - - - -
268A ILE* 3.5 19.1 - - + +
270A ILE* 4.2 14.4 - - + -
281A MSE 3.8 26.0 - - + -
284A ALA* 4.2 9.2 - - + +
285A ALA* 3.8 26.2 - - + +
288A ALA* 3.8 20.6 - - + -
294A LYS* 1.3 75.5 - - - +
296A CYS* 1.3 69.2 + - - +
297A ILE* 4.8 0.2 - - + -
317A ILE* 4.5 4.7 - - + -
319A ASN* 2.8 19.9 + - - +
320A LEU* 3.3 17.9 - - + +
321A ASP* 2.7 31.9 + - - -
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Residues in contact with CYS 296 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
194A ARG* 4.3 3.1 - - - -
220A PHE* 5.3 2.5 - - - -
222A GLU* 5.5 0.9 - - - -
267A MSE 3.5 29.1 - - + +
268A ILE 3.1 8.0 + - - +
269A CYS* 3.2 22.2 - - - -
270A ILE 3.1 25.3 + - - +
294A LYS 4.2 0.2 + - - -
295A ILE* 1.3 75.9 - - - +
297A ILE* 1.3 67.0 + - - +
321A ASP* 3.4 21.8 - - + -
323A GLY 3.6 15.3 - - - -
324A ASN* 3.5 9.9 - - - -
325A GLN* 4.6 3.6 - - - -
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Residues in contact with ILE 297 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
137A VAL* 5.2 3.1 - - + -
139A TYR* 6.1 1.1 - - + -
269A CYS* 4.1 0.9 - - - -
270A ILE 3.4 6.7 - - - +
271A GLY* 4.6 3.8 - - - -
272A PRO* 4.7 2.5 - - + -
281A MSE 4.4 13.5 - - + -
295A ILE* 4.8 0.2 - - + -
296A CYS* 1.3 72.6 - - - +
298A HIS* 1.3 70.0 + - - +
310A GLU* 3.1 58.1 - - + +
313A ILE* 4.6 3.6 - - + -
314A GLY* 3.5 24.5 - - - +
320A LEU* 3.9 10.1 - - + -
324A ASN* 2.7 31.7 + - + +
325A GLN* 3.0 36.0 + - - +
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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