Contacts of the strand formed by residues 271 - 274 (chain O) in PDB entry 3K9Q
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 PHE 271 (chain O).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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158O PRO* 3.6 29.4 - - + -
159O VAL* 3.6 21.8 - - + -
263O MET* 3.7 39.5 - - - -
266O ALA* 3.9 25.8 - - + +
267O SER* 3.1 9.9 - - - -
268O ASN* 2.7 40.7 + - - +
270O SER* 1.3 75.5 - - - +
272O GLY* 1.3 60.3 + - - +
290O SER* 3.4 34.3 - - - -
292O PHE* 3.6 33.0 - + + -
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Residues in contact with GLY 272 (chain O).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
267O SER* 4.6 2.0 - - - -
268O ASN 4.5 0.2 - - - -
271O PHE* 1.3 78.3 - - - +
273O TYR* 1.3 59.7 - - - +
288O TYR* 3.4 30.1 - - - -
290O SER 2.7 11.1 + - - +
291O LEU* 3.4 15.9 - - - -
292O PHE* 2.8 26.0 + - - +
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Residues in contact with TYR 273 (chain O).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
260O ASN* 3.4 31.8 + - - +
261O GLU* 5.4 0.2 - - - -
263O MET 4.3 2.2 - - - +
264O LYS* 3.7 54.1 - - + +
267O SER* 4.4 11.2 - - - -
272O GLY* 1.3 73.7 - - - +
274O THR* 1.3 65.0 + - - +
275O GLU* 2.7 38.3 + - + -
288O TYR* 5.2 1.5 + - - -
291O LEU* 3.6 4.9 - - - +
292O PHE* 3.6 20.6 - + + -
294O ALA* 3.5 27.3 - - + +
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Residues in contact with THR 274 (chain O).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
273O TYR* 1.3 78.7 - - - +
275O GLU* 1.3 64.3 + - - +
276O ASP* 3.1 33.7 + - - +
278O ILE* 4.2 12.8 - - + +
291O LEU* 4.0 25.8 - - + -
292O PHE 2.8 17.0 + - - +
293O ASP* 3.7 12.0 - - + +
294O ALA* 2.9 30.0 + - - +
47Q TYR* 4.9 1.4 + - - -
53Q ARG* 5.3 3.7 + - - -
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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