Contacts of the helix formed by residues 209 - 214 (chain D) in PDB entry 2PK9
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 ARG 209 (chain D).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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174D ASP* 2.9 41.1 + - - +
175D HIS* 3.8 28.3 + - - -
205D SER 5.3 0.4 - - - +
206D TYR* 3.0 29.0 - - + +
207D VAL 2.8 9.7 + - - +
208D ASN* 1.3 74.8 - - - +
210D PRO* 1.4 81.7 - - + +
211D LYS 3.6 0.2 + - - -
212D SER* 3.0 15.9 + - - -
213D GLY* 4.0 19.1 - - - +
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Residues in contact with PRO 210 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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208D ASN 3.3 5.4 - - - +
209D ARG* 1.4 92.5 - - + +
211D LYS* 1.3 65.5 + - + +
212D SER 2.9 9.7 + - - -
213D GLY* 3.1 10.2 + - - -
215D ASN* 3.3 18.1 + - - +
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Residues in contact with LYS 211 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
128C LYS* 4.2 22.2 + - - +
209D ARG 3.6 0.4 + - - -
210D PRO* 1.3 71.7 - - + +
212D SER* 1.3 67.2 + - - +
213D GLY 3.1 0.2 - - - -
214D TYR* 3.1 46.7 + - + +
215D ASN* 3.6 16.3 - - - +
218D ASP* 2.7 30.7 + - - -
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Residues in contact with SER 212 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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126C GLU* 3.0 35.3 + - - -
127C ASN* 3.9 1.0 + - - -
128C LYS* 4.2 16.8 - - - -
173D ARG* 2.9 37.2 + - - -
206D TYR* 3.6 17.6 + - - +
209D ARG 3.0 12.4 + - - -
210D PRO 2.9 3.0 - - - -
211D LYS* 1.3 77.9 - - - +
213D GLY* 1.3 56.5 + - - +
214D TYR* 3.4 2.0 - - - -
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Residues in contact with GLY 213 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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173D ARG* 3.3 8.7 - - - -
174D ASP* 2.7 40.6 + - - +
206D TYR* 3.6 20.9 - - - -
209D ARG* 4.0 4.8 - - - +
210D PRO 3.1 7.2 + - - -
212D SER* 1.3 76.8 - - - +
214D TYR* 1.3 59.4 + - - +
215D ASN* 3.4 10.0 + - - -
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Residues in contact with TYR 214 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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59C GLU* 5.7 0.7 - - - +
127C ASN 3.0 25.2 + - - -
128C LYS* 3.7 15.4 + - + -
129C ILE* 4.3 4.2 - - - +
157C ALA* 3.9 14.7 - - + +
159C GLY* 3.7 31.2 - - - +
160C ILE* 3.6 37.7 - - + -
171D ILE* 4.0 9.3 - - + +
172D PRO 4.3 4.5 - - - -
173D ARG* 3.3 41.0 + - + -
211D LYS* 3.1 50.8 + - + +
212D SER 3.7 4.9 - - - -
213D GLY* 1.3 74.5 - - - +
215D ASN* 1.3 59.9 + - - +
216D VAL 3.7 1.3 - - - +
217D LEU 5.5 0.7 - - - -
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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
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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