Contacts of the helix formed by residues 283 - 289 (chain B) in PDB entry 3EGC
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 LEU 283 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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258A GLU* 6.1 0.2 - - - +
283A LEU* 6.6 0.4 - - + -
80B VAL* 4.6 24.9 - - + -
254B HIS* 3.8 43.1 - - + +
281B ASP* 3.4 15.7 + - + -
282B ASN* 1.3 84.8 + - - +
284B PRO* 1.3 73.5 - - + +
285B TRP* 3.1 34.4 + - + +
286B MET* 3.2 25.6 + - - +
287B ALA* 4.2 1.7 + - - +
333B HIS* 5.5 0.5 + - - -
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Residues in contact with PRO 284 (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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258A GLU* 3.8 34.8 - - + +
262A GLN* 4.7 10.3 - - - +
282B ASN* 4.1 5.6 - - - +
283B LEU* 1.3 89.0 - - + +
285B TRP* 1.3 62.9 + - + +
287B ALA* 3.2 17.1 + - + +
288B PHE* 3.5 20.8 - - + -
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Residues in contact with TRP 285 (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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258A GLU* 4.8 3.9 + - - +
285A TRP* 3.2 66.4 - + + +
288A PHE* 3.8 26.0 - + - -
254B HIS* 4.5 4.6 + - + +
257B THR* 4.0 22.7 - - + -
258B GLU* 4.1 24.2 + - + -
261B MET* 4.6 2.7 - - + -
283B LEU* 3.6 30.7 - - + +
284B PRO* 1.3 78.7 - - + +
286B MET* 1.3 84.0 + - + +
288B PHE* 2.9 37.1 + - + +
289B LEU* 3.7 32.0 + - + +
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Residues in contact with MET 286 (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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254B HIS* 3.6 31.0 - - + -
257B THR* 4.2 4.9 - - + -
279B SER* 3.6 24.9 - - - +
281B ASP 3.4 8.7 - - - +
283B LEU* 3.2 19.0 + - + +
285B TRP* 1.3 109.1 - - + +
287B ALA* 1.3 58.5 + - - +
288B PHE 3.2 1.4 + - - -
289B LEU* 3.8 9.4 + - - +
292B PRO* 3.6 1.4 - - - +
293B LEU* 2.8 49.4 + - + +
295B VAL* 3.3 28.5 - - + -
333B HIS* 4.9 3.6 - - + -
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Residues in contact with ALA 287 (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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265A ASN* 4.8 5.5 - - - +
283B LEU 4.2 0.6 + - - -
284B PRO* 3.2 14.7 + - + +
285B TRP 3.1 1.2 - - - -
286B MET* 1.3 75.5 - - - +
288B PHE* 1.3 66.0 + - + +
289B LEU 3.3 7.0 - - - +
292B PRO* 4.2 18.1 - - + +
333B HIS* 4.1 26.6 - - + +
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Residues in contact with PHE 288 (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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258A GLU* 3.6 33.0 - - + -
261A MET* 3.7 46.3 - - + +
262A GLN* 3.8 28.7 - - + -
265A ASN* 5.0 11.4 - - - +
285A TRP* 4.1 18.6 - + - -
289A LEU* 5.4 6.4 - - + +
284B PRO 3.5 16.4 - - - -
285B TRP* 2.9 34.2 + - + +
287B ALA* 1.3 83.4 - - + +
289B LEU* 1.3 70.6 + - + +
290B ASP* 5.3 0.2 - - - +
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Residues in contact with LEU 289 (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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288A PHE* 5.4 5.2 - - + +
289A LEU* 4.6 19.7 - - + -
261B MET* 4.5 14.8 - - + -
271B TYR* 3.6 16.2 - - + -
285B TRP* 3.7 37.9 - - + +
286B MET* 3.9 13.5 - - - +
287B ALA 3.3 1.1 - - - +
288B PHE* 1.3 87.0 - - + +
290B ASP* 1.3 61.0 + - - +
291B PRO 3.3 13.2 - - - +
292B PRO* 2.9 22.2 - - - +
293B LEU* 3.8 23.8 - - + -
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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