Contacts of the helix formed by residues 422 - 425 (chain A) in PDB entry 1B0K
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 GLY 422 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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100A ASP 4.7 0.4 + - - -
101A HIS 5.3 0.4 + - - -
103A ILE 4.0 14.6 + - - -
105A ALA* 5.1 2.0 - - - -
390A THR* 5.9 0.2 - - - -
417A LEU* 6.0 0.2 - - - -
420A ALA* 3.3 6.8 - - - +
421A CYS* 1.4 74.6 - - - +
423A PRO* 1.4 62.8 - - - +
424A CYS 2.9 14.7 + - - -
425A ILE* 3.3 9.7 + - - +
427A GLN* 3.0 34.6 + - - +
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Residues in contact with PRO 423 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
105A ALA* 4.0 19.3 - - + -
354A LEU* 3.6 31.9 - - + -
388A THR* 5.9 0.2 - - + -
390A THR* 5.1 2.9 - - - +
417A LEU* 4.2 16.2 - - + -
421A CYS 4.1 3.4 - - - +
422A GLY* 1.4 80.2 - - - +
424A CYS* 1.3 60.1 + - - +
425A ILE 3.5 0.4 - - - -
426A GLY 3.0 9.3 + - - -
427A GLN 3.9 0.9 - - - +
428A TRP* 3.9 39.5 - - + -
445A TYR* 3.8 10.1 - - + +
453A ASN* 3.0 24.1 + - + +
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Residues in contact with CYS 424 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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357A SER* 4.1 7.2 - - - -
421A CYS 3.3 17.9 + - - +
422A GLY 2.9 2.4 + - - -
423A PRO* 1.3 78.9 - - - +
425A ILE* 1.3 55.2 + - - +
426A GLY 3.6 1.2 + - - -
445A TYR* 3.8 34.9 - - + -
446A ASN* 5.3 1.3 - - - -
447A ARG 6.3 0.2 - - - -
452A ARG* 3.1 34.4 + - - -
453A ASN* 3.6 5.9 + - - +
755A SF4 2.3 42.4 - - - -
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Residues in contact with ILE 425 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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101A HIS* 3.6 31.2 - - + +
421A CYS* 3.5 21.3 - - + -
422A GLY 3.3 10.7 + - - +
424A CYS* 1.3 72.9 - - - +
426A GLY* 1.3 62.3 + - - +
427A GLN* 3.2 13.4 + - + +
452A ARG* 3.7 20.2 - - + +
573A ALA* 3.5 27.4 - - + -
574A GLY* 3.1 19.4 + - - -
577A LEU* 4.1 10.0 - - + +
644A ARG* 4.4 2.2 - - - +
755A SF4 3.3 19.3 - - - -
756A FLC 4.0 23.6 - - + -
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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