Contacts of the helix formed by residues 240 - 244 (chain B) in PDB entry 3GNI
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 VAL 240 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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1B ATP 4.8 9.2 - - - +
194B ARG 4.0 7.4 - - - +
195B SER* 3.9 34.1 - - - -
197B LYS* 4.3 23.3 - - + +
200B HIS* 5.5 0.9 - - + -
236B TYR 5.4 0.4 - - - +
237B SER* 3.0 31.9 + - - +
239B LYS* 1.3 77.7 - - + +
241B LEU* 1.3 65.2 + - - +
242B PRO* 3.4 2.7 - - - -
243B TRP* 3.1 27.0 + - + -
244B LEU* 3.6 13.5 + - + +
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Residues in contact with LEU 241 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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233B PHE* 4.4 18.4 - - + -
237B SER* 3.3 23.3 - - - +
238B VAL* 4.1 21.3 - - + -
239B LYS 4.8 3.1 - - - +
240B VAL* 1.3 77.0 - - - +
242B PRO* 1.4 65.6 - - + +
244B LEU* 2.9 39.4 + - + +
249B LEU* 3.9 19.2 - - + +
284B ALA* 5.0 23.1 - - + +
286B GLN* 3.4 20.3 + - - +
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Residues in contact with PRO 242 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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239B LYS* 3.4 17.3 - - - +
240B VAL 3.5 1.3 - - - -
241B LEU* 1.4 93.6 - - + +
243B TRP* 1.3 65.0 - - + +
244B LEU 3.3 0.6 + - - -
267B ILE* 3.7 16.8 - - - +
277B VAL* 3.9 16.6 - - + -
278B PRO 3.6 20.6 - - - +
279B PHE* 4.3 16.0 - - + +
280B LYS* 5.3 2.7 - - + -
286B GLN* 3.7 19.3 - - - +
290B GLU* 3.6 11.6 - - - +
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Residues in contact with TRP 243 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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156B LYS* 5.5 2.7 - - - -
196B VAL 3.5 25.8 - - - +
197B LYS* 3.4 32.8 - - + +
239B LYS 3.0 24.7 - - - -
240B VAL* 3.1 27.3 + - + +
242B PRO* 1.3 86.0 - - + +
244B LEU* 1.3 61.1 + - - +
245B SER 3.8 0.3 + - - -
263B TYR* 4.0 2.3 - - - -
264B SER* 2.7 36.5 + - - -
267B ILE* 3.5 25.2 - - + +
268B THR* 3.5 11.9 + - - -
271B GLU* 3.1 41.5 + - - +
277B VAL* 3.5 32.7 - - + +
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Residues in contact with LEU 244 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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194B ARG* 3.8 28.0 - - + +
233B PHE* 5.1 2.2 - - + -
234B PRO* 4.2 22.4 - - + -
237B SER* 4.3 4.3 - - - +
240B VAL* 3.6 13.2 - - + +
241B LEU* 2.9 36.7 + - + +
243B TRP* 1.3 80.9 - - - +
245B SER* 1.3 64.4 + - - +
248B VAL* 4.1 23.8 - - + -
249B LEU* 3.6 25.1 - - + +
263B TYR* 3.6 3.1 - - - -
264B SER* 4.6 4.7 - - - +
290B GLU* 2.9 26.5 - - - +
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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
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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