Contacts of the helix formed by residues 327 - 332 (chain B) in PDB entry 2BWE
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 ASP 327 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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355A ARG* 3.4 21.4 + - - -
326B LEU* 1.4 90.5 - - + +
328B PRO* 1.4 89.5 - - - +
329B GLU* 2.9 12.0 - - - +
330B GLU* 2.8 11.5 + - + +
331B ARG* 2.8 25.0 + - - +
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Residues in contact with PRO 328 (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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327B ASP* 1.4 93.0 - - - +
329B GLU* 1.3 60.6 + - - +
331B ARG* 4.2 7.2 - - + +
332B TYR* 2.8 44.0 + - + +
336B LEU* 4.2 2.4 - - - +
347B PHE* 4.3 12.1 - - + -
351B VAL* 4.1 27.4 - - + -
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Residues in contact with GLU 329 (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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352A ALA 5.2 0.5 - - - +
355A ARG* 3.5 47.6 + - + +
356A ARG* 3.8 20.6 + - + +
327B ASP* 2.9 18.1 + - - +
328B PRO* 1.3 79.8 - - - +
330B GLU* 1.3 74.0 + - - +
332B TYR 4.1 0.2 - - - -
333B GLU* 3.3 25.6 + - - +
336B LEU* 4.0 10.0 - - - +
347B PHE* 3.6 28.1 - - + -
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Residues in contact with GLU 330 (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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331A ARG* 5.5 8.8 + - - +
332A TYR* 5.3 1.9 + - - -
355A ARG* 2.2 51.1 + - - +
326B LEU* 4.0 22.0 - - + -
327B ASP* 2.8 12.4 + - + +
329B GLU* 1.3 79.6 - - - +
331B ARG* 1.3 65.2 + - - +
333B GLU* 3.6 14.0 + - - +
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Residues in contact with ARG 331 (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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326B LEU* 3.9 38.6 - - + +
327B ASP 2.8 21.0 + - - +
328B PRO* 3.7 4.0 - - + +
330B GLU* 1.3 79.2 - - - +
332B TYR* 1.3 94.7 + - + +
333B GLU 3.4 2.0 + - - -
335B GLN* 4.0 5.9 + - - +
330C GLU* 5.3 12.2 + - - +
333C GLU* 3.5 30.5 + - - -
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Residues in contact with TYR 332 (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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328B PRO* 2.8 26.1 + - + +
331B ARG* 1.3 104.8 + - + +
333B GLU* 1.3 54.2 + - - +
335B GLN* 3.1 27.1 + - - +
336B LEU* 2.6 44.6 + - + +
351B VAL* 4.2 20.4 - - + -
354B LEU* 3.9 26.0 - - + -
355B ARG* 3.4 41.6 - - + +
358B GLY 5.1 1.8 - - - -
359B GLY* 4.0 22.1 + - - -
330C GLU* 5.1 3.5 + - - -
333C GLU* 4.7 7.4 + - - +
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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