Contacts of the helix formed by residues 353 - 357 (chain A) in PDB entry 1OMW
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 THR 353 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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316A ARG 4.6 1.6 + - - -
317A ASP* 3.0 18.5 + - - +
318A LEU 5.4 1.3 - - - -
319A LYS* 3.2 30.0 + - + +
352A GLY* 1.3 74.5 - - - -
354A HIS* 1.3 67.0 + - - +
355A GLY 3.4 3.2 + - - +
356A TYR* 3.4 39.3 + - + +
357A MET* 3.3 19.1 - - - +
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Residues in contact with HIS 354 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
350A SER* 5.7 2.5 - - - -
352A GLY 4.9 4.3 - - - -
353A THR* 1.3 79.8 - - - +
355A GLY* 1.3 61.3 + - - +
356A TYR 3.5 0.7 + - - -
357A MET* 3.6 22.4 + - + +
362A LEU* 5.7 0.2 - - + -
399A LYS* 3.2 50.7 - - + +
402A ILE* 3.4 22.3 - - + +
403A ASP* 2.9 44.0 + - - +
406A THR* 5.6 0.7 + - - -
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Residues in contact with GLY 355 (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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353A THR* 3.4 3.8 + - - +
354A HIS* 1.3 76.5 - - - +
356A TYR* 1.3 70.2 + - - +
357A MET 3.9 1.1 - - - -
375A PHE* 5.7 0.2 - - - -
379A CYS* 3.9 11.6 - - - +
389A SER* 3.7 30.3 - - - -
390A PRO* 4.4 1.0 - - - +
391A PHE* 4.5 8.2 - - - -
392A ARG* 6.0 0.2 - - - -
402A ILE* 3.8 17.2 - - - +
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Residues in contact with TYR 356 (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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316A ARG 5.2 2.0 - - - +
318A LEU 3.7 19.5 - - - +
319A LYS* 3.9 8.3 - - + -
320A PRO* 3.9 13.5 - - + +
353A THR* 3.4 36.7 + - + +
354A HIS 3.3 1.2 - - - -
355A GLY* 1.3 81.3 - - - +
357A MET* 1.3 60.2 + - - +
376A SER* 2.6 38.9 + - - +
379A CYS* 3.7 23.8 - - + -
380A MET* 3.7 38.1 - - + -
383A LYS* 3.4 33.7 + - + +
389A SER* 4.0 17.1 + - - -
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Residues in contact with MET 357 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
316A ARG 5.0 2.9 - - - +
350A SER* 4.0 6.5 - - - +
351A VAL 3.8 35.2 - - - +
352A GLY* 4.2 6.3 - - - +
353A THR 3.3 23.8 + - - +
354A HIS* 3.6 40.5 + - + +
355A GLY 3.9 1.4 + - - -
356A TYR* 1.3 80.7 - - - +
358A ALA* 1.3 63.1 + - - +
361A VAL* 3.8 20.9 - - + -
362A LEU* 3.7 30.4 - - + +
375A PHE* 3.5 14.0 - - - -
376A SER* 4.4 1.1 - - - -
406A THR* 3.9 10.6 + - - +
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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