Contacts of the strand formed by residues 183 - 185 (chain P) in PDB entry 1KYO
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 SER 183 (chain P).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
176P TRP 3.9 0.3 - - - +
177P PHE* 3.4 5.9 - - - -
178P CYS* 2.8 31.8 + - - +
182P GLY* 1.3 76.5 - - - +
184P HIS* 1.3 60.7 + - - +
185P TYR* 3.9 21.3 - - - -
191P ILE* 4.0 3.8 - - - -
193P LYS 3.2 3.8 - - - -
194P GLY* 3.9 0.2 - - - -
195P PRO* 3.3 5.4 - - - +
196P ALA* 3.3 31.4 + - - +
524P FES 3.1 24.3 - - - -
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Residues in contact with HIS 184 (chain P).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
344C VAL 6.0 2.0 - - - -
171P GLY* 3.7 8.8 - - - -
172P ASP* 2.9 51.8 + - + +
173P PHE* 3.7 17.9 - + + +
176P TRP 3.7 3.8 - - - +
177P PHE* 3.5 25.6 - + - -
182P GLY* 3.3 13.6 + - - -
183P SER* 1.3 74.4 - - - +
185P TYR* 1.3 60.7 + - - +
191P ILE* 3.4 5.5 - - - +
192P ARG* 2.9 28.0 + - - -
193P LYS* 2.5 43.8 + - + +
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Residues in contact with TYR 185 (chain P).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
159P CYS* 3.2 15.9 - - - -
160P THR* 3.4 9.7 + - - -
166P PRO* 4.1 13.7 - - + -
170P ALA 4.9 0.2 - - - +
171P GLY* 5.9 0.3 - - - -
173P PHE* 4.1 7.5 + - - +
175P GLY* 3.1 6.6 + - - -
176P TRP* 2.8 53.1 + - + +
178P CYS* 4.7 0.9 - - + -
183P SER* 3.9 20.6 - - - -
184P HIS* 1.3 75.2 - - - +
186P ASP* 1.3 62.2 + - - +
189P GLY* 4.3 6.3 - - - -
190P ARG 3.1 12.1 - - - +
191P ILE* 3.6 33.2 - - + -
192P ARG* 4.6 0.2 - - - -
196P ALA* 3.1 25.4 - - + +
198P LEU 3.9 9.6 - - - -
200P LEU* 3.5 34.5 - - + -
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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
------------------------------------------------------------
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