Contacts of the helix formed by residues 356 - 361 (chain C) in PDB entry 2OIB
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 ALA 356 (chain C).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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354C TYR 3.7 1.0 + - - -
355C MET* 1.3 75.5 - - - +
357C PRO* 1.3 72.1 - - + +
358C GLU* 3.2 30.7 - - - +
359C ALA* 3.0 6.5 + - + +
360C LEU* 3.0 19.9 + - - +
368C SER* 3.9 14.5 + - - +
371C TYR* 3.6 22.5 - - + +
372C SER* 4.7 2.2 + - - -
444C ARG* 3.7 8.1 - - - +
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Residues in contact with PRO 357 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
355C MET 3.8 0.8 - - - +
356C ALA* 1.3 85.9 - - + +
358C GLU* 1.3 62.9 + - - +
360C LEU* 3.2 15.0 + - + +
361C ARG* 3.1 47.8 + - - +
371C TYR* 4.1 10.3 - - + +
439C GLU* 3.1 33.0 - - + +
444C ARG* 3.8 14.8 - - - +
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Residues in contact with GLU 358 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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356C ALA* 3.2 8.3 - - - +
357C PRO* 1.3 80.0 - - - +
359C ALA* 1.3 60.1 + - - +
361C ARG* 3.2 11.6 + - - +
362C GLY 3.1 6.1 + - - -
363C GLU* 2.9 62.2 + - + +
365C THR* 4.0 3.2 - - + +
368C SER* 2.7 24.9 + - - +
439C GLU 4.4 2.8 - - - +
441C LYS* 3.9 20.6 - - + +
444C ARG* 2.7 43.1 + - - -
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Residues in contact with ALA 359 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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348C ILE* 3.8 6.8 - - - +
349C VAL 5.2 0.3 - - - +
355C MET* 3.4 24.0 - - + +
356C ALA 3.0 15.8 + - - +
358C GLU* 1.3 81.8 - - - +
360C LEU* 1.3 60.4 + - - +
362C GLY* 3.2 11.4 + - - -
363C GLU 3.7 15.1 - - - +
368C SER* 3.7 26.0 - - - +
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Residues in contact with LEU 360 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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348C ILE* 3.5 21.3 - - + +
352C THR* 4.1 26.7 - - + +
355C MET* 3.7 46.4 - - + +
356C ALA 3.0 17.3 + - - +
357C PRO* 3.2 15.0 + - + +
359C ALA* 1.3 76.9 - - - +
361C ARG* 1.3 60.2 + - + +
362C GLY 3.4 0.2 - - - -
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Residues in contact with ARG 361 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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344C MET* 3.8 17.3 - - + +
348C ILE* 4.0 7.0 - - - +
357C PRO* 3.1 38.1 + - - +
358C GLU* 3.2 10.8 + - - +
359C ALA 3.1 0.6 - - - -
360C LEU* 1.3 80.3 - - + +
362C GLY* 1.3 58.8 + - - +
363C GLU* 3.6 2.5 - - + -
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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