Contacts of the helix formed by residues 322 - 327 (chain E) in PDB entry 5IIO
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 322 (chain E).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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259E LYS* 3.9 27.0 - - + +
260E LEU* 4.3 11.0 - - + -
263E LEU* 3.6 26.9 - - + -
312E LYS* 4.0 31.0 - - + +
315E GLU* 3.3 22.0 - - - +
316E ILE* 4.0 8.7 - - + -
321E HIS* 1.3 75.1 - - - +
323E ARG* 1.3 61.0 + - - +
324E LYS* 3.1 13.9 - - + +
325E LEU* 2.9 49.9 + - + +
326E ASP* 4.2 4.3 + - - +
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Residues in contact with ARG 323 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
315E GLU* 3.0 36.4 + - - +
319E SER* 5.8 1.6 + - - -
321E HIS* 3.9 1.8 - - - -
322E LEU* 1.3 72.1 - - - +
324E LYS* 1.3 60.8 + - - +
326E ASP* 3.1 23.9 + - - +
327E HIS* 3.5 27.4 + - + +
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Residues in contact with LYS 324 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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263E LEU* 4.0 28.5 - - + -
267E TYR* 3.3 28.0 + - - -
308E ARG* 4.4 7.9 - - - +
312E LYS* 4.6 10.9 - - - +
322E LEU* 3.0 10.6 + - + +
323E ARG* 1.3 79.5 - - - +
325E LEU* 1.3 61.0 + - - +
326E ASP 3.1 0.2 - - - -
327E HIS* 3.2 18.7 + - + +
328E ILE* 3.5 12.9 + - + +
1H G 3.6 18.4 + - - -
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Residues in contact with LEU 325 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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259E LYS* 3.6 53.2 - - + +
262E VAL* 3.6 27.8 - - + -
263E LEU* 3.6 17.3 - - + -
322E LEU* 2.9 29.2 + - + +
324E LYS* 1.3 77.5 - - - +
326E ASP* 1.3 63.6 + - - +
327E HIS 3.3 1.0 + - - -
328E ILE* 3.9 17.4 + - + +
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Residues in contact with ASP 326 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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326A ASP* 4.2 11.4 - - - +
327A HIS* 5.0 4.7 + - - -
321E HIS* 5.6 4.9 - - - +
322E LEU 4.3 4.1 - - - +
323E ARG* 3.1 24.3 + - + +
324E LYS 3.1 1.0 - - - -
325E LEU* 1.3 83.0 - - - +
327E HIS* 1.3 71.9 + - + +
328E ILE 3.6 1.3 - - - -
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Residues in contact with HIS 327 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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326A ASP 4.1 17.2 + - - -
327A HIS* 4.4 17.3 - - + -
328A ILE 4.7 15.2 + - - -
329A SER* 6.1 0.4 - - - -
330A GLU* 5.6 12.8 - - + +
323E ARG* 3.5 27.4 + - + +
324E LYS* 3.2 12.5 + - + +
326E ASP* 1.3 90.5 - - + +
328E ILE* 1.3 63.7 + - - +
329E SER* 3.4 3.8 + - - -
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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