Contacts of the helix formed by residues 330 - 336 (chain B) in PDB entry 4XDO
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 330 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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300B ASP* 3.0 23.2 + - - -
303B LYS* 3.3 19.5 - - - +
323B VAL* 4.6 0.7 - - + -
327B GLN* 2.9 35.2 + - + +
329B ASP* 1.3 82.9 - - + +
331B TYR* 1.3 59.0 + - - +
332B GLN* 3.5 1.8 - - - -
333B LEU* 3.3 14.7 + - + +
334B TRP* 2.9 28.9 + - - +
339B ASP* 3.2 31.3 + - - +
341B TYR* 3.3 23.8 - - - +
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Residues in contact with TYR 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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320B ASP* 2.4 38.8 + - - -
323B VAL* 3.8 16.6 - - + +
324B ARG* 3.5 50.9 - - + -
327B GLN 3.3 10.6 + - - +
328B PRO* 3.6 12.9 + - + +
329B ASP 3.7 0.4 - - - -
330B ARG* 1.3 78.3 - - - +
332B GLN* 1.3 77.6 + - - +
334B TRP* 3.3 6.8 + + - +
335B LYS* 2.9 63.8 + - + +
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Residues in contact with GLN 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 5.0 0.6 + - - -
330B ARG 3.5 0.2 - - - -
331B TYR* 1.3 100.0 - - - +
333B LEU* 1.3 66.9 + - + +
335B LYS* 3.0 12.9 + - - +
336B GLN* 2.9 45.0 + - + +
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Residues in contact with LEU 333 (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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329B ASP 5.1 10.1 - - - +
330B ARG* 3.3 14.7 + - + +
332B GLN* 1.3 77.0 - - + +
334B TRP* 1.3 61.4 + - - +
336B GLN* 3.1 19.7 + - - +
337B GLY 3.1 4.2 + - - -
338B LYS* 2.9 53.1 + - + +
339B ASP* 3.9 9.6 - - + +
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Residues in contact with TRP 334 (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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303B LYS* 3.6 36.7 + - + +
319B MET* 4.1 18.2 - - + -
320B ASP* 3.7 42.0 - - + -
323B VAL* 3.9 26.0 - - + -
330B ARG 2.9 17.6 + - - +
331B TYR* 3.6 5.8 - + - +
333B LEU* 1.3 77.5 - - - +
335B LYS* 1.3 85.8 + - + +
337B GLY* 3.1 16.3 + - - -
339B ASP* 3.4 24.8 - - + +
341B TYR* 5.7 0.9 - + - -
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Residues in contact with LYS 335 (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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320B ASP* 3.9 5.5 + - - +
331B TYR* 2.9 60.0 + - + +
332B GLN* 3.0 11.0 + - - +
334B TRP* 1.3 96.2 - - + +
336B GLN* 1.3 61.4 + - + +
337B GLY 3.2 1.2 + - - -
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Residues in contact with GLN 336 (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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332B GLN* 2.9 37.7 + - - +
333B LEU* 3.1 20.2 + - - +
335B LYS* 1.3 76.7 - - + +
337B GLY* 1.3 61.2 + - - +
338B LYS* 3.4 31.5 + - + +
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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