Contacts of the strand formed by residues 123 - 126 (chain C) in PDB entry 4YO0
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 123 (chain C).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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54C ALA* 3.6 27.1 - - + -
56C VAL* 4.5 9.0 - - + -
66C TRP* 4.5 1.6 - + - -
69C SER* 4.9 0.2 - - - -
116C ALA* 3.6 21.5 - - + -
117C LYS 3.3 5.4 - - - +
118C THR* 3.6 24.9 - - + -
122C TYR* 1.3 70.3 - - - +
124C ASP* 1.3 63.5 + - - +
125C TYR 3.4 0.7 - - - -
126C TRP* 3.9 24.0 + + + +
56D TYR* 3.0 40.0 + - - +
66D THR* 3.3 4.3 + - - -
111D HIS* 3.7 18.2 - + - -
117D ILE* 3.9 20.4 - - + -
119D PHE* 3.6 31.2 - + - -
6F MET* 3.7 10.3 - - + -
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Residues in contact with ASP 124 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
117C LYS* 2.8 52.5 + - - +
118C THR 3.7 1.0 - - - -
119C SER* 3.8 12.0 - - - -
122C TYR* 3.6 34.4 + - + +
123C PHE* 1.3 75.4 - - - +
125C TYR* 1.3 94.0 + - + +
126C TRP* 4.9 1.0 - - - -
66D THR* 3.8 12.5 + - - -
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Residues in contact with TYR 125 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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21C VAL* 3.6 55.1 - - + +
23C LEU* 3.5 8.6 - - + +
116C ALA* 3.3 5.7 - - - +
117C LYS* 3.0 29.9 + - + +
123C PHE 3.4 0.4 - - - -
124C ASP* 1.3 123.7 + - + +
126C TRP* 1.3 69.0 + - - +
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Residues in contact with TRP 126 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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23C LEU* 4.0 8.6 + - - +
56C VAL* 3.9 30.1 - - + -
64C LEU* 4.2 9.4 - - + -
114C TYR* 3.8 24.7 - + + -
115C CYS 3.5 4.5 - - - -
116C ALA* 4.3 7.6 - - + -
123C PHE* 3.9 29.3 + + + +
124C ASP 4.9 0.9 - - - -
125C TYR* 1.3 84.9 - - - +
127C GLY* 1.3 71.4 + - - +
56D TYR* 3.8 38.1 - + - -
63D SER* 4.3 2.6 - - - -
64D PRO* 3.4 54.2 + - + +
65D THR* 4.8 2.7 - - - -
66D THR* 5.4 0.4 - - - -
119D PHE* 3.8 25.1 - + - -
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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