Contacts of the helix formed by residues 492 - 496 (chain A) in PDB entry 1OCR
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 492 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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85A LEU 3.0 21.6 - - - +
86A MET* 3.8 19.7 - - - +
88A GLY* 3.8 15.3 - - - +
182A PRO* 6.5 0.2 - - + -
488A THR 3.9 5.0 + - - -
490A THR 3.9 1.2 - - - -
491A ASN* 1.3 73.2 - - - +
493A GLU* 1.3 65.5 + - - +
494A TRP 3.0 1.7 + - - -
495A LEU* 3.0 34.6 + - + +
496A ASN* 4.6 3.6 + - - -
505A PHE* 4.1 22.5 - - + -
57F ILE* 4.6 4.9 - - + -
71F TRP* 3.8 45.7 - - + +
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Residues in contact with GLU 493 (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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82A LEU* 4.2 5.8 - - + -
85A LEU* 3.9 35.3 + - + +
86A MET* 3.7 29.5 - - + +
256A HIS* 4.8 2.1 + - - -
395A HIS* 5.0 0.7 + - - -
396A TRP* 3.0 36.6 + - - +
399A LEU* 3.3 29.0 - - + +
491A ASN* 3.6 20.6 - - - +
492A LEU* 1.3 78.8 + - - +
494A TRP* 1.3 81.4 + - + +
496A ASN* 4.5 6.6 + - - +
500A PRO* 5.4 1.2 - - - +
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Residues in contact with TRP 494 (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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260A TYR* 4.6 7.9 - + - -
395A HIS* 3.3 45.7 + + - -
396A TRP* 3.7 16.5 - + - +
398A PRO* 4.4 8.7 - - + -
399A LEU* 3.5 39.7 - - + -
485A VAL* 3.7 32.1 - - + +
486A ASP 5.4 0.2 - - - -
488A THR* 4.0 18.9 - - + +
491A ASN* 3.0 27.6 + - + +
492A LEU 3.0 1.2 - - - -
493A GLU* 1.3 98.4 + - + +
495A LEU* 1.3 56.9 + - - +
496A ASN 3.1 3.4 - - - -
497A GLY* 2.9 26.0 + - - +
498A CYS* 3.7 24.8 - - - -
11D TYR* 5.8 0.3 - - - +
1M ILE* 5.1 6.7 - - + -
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Residues in contact with LEU 495 (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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488A THR* 3.7 34.3 - - + +
491A ASN 4.2 0.2 + - - -
492A LEU* 3.0 25.8 + - + +
494A TRP* 1.3 75.5 - - - +
496A ASN* 1.3 58.0 + - - +
497A GLY 3.2 1.6 - - - -
11D TYR* 3.3 15.3 - - - +
57F ILE* 4.2 17.5 - - + -
71F TRP* 3.7 42.6 - - + +
72F PHE* 4.0 8.3 - - - +
73F TRP* 2.9 41.1 + - + +
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Residues in contact with ASN 496 (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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85A LEU* 5.5 2.2 - - + +
492A LEU 4.7 3.2 + - - -
493A GLU 4.5 3.3 + - - +
494A TRP 2.9 2.2 + - - -
495A LEU* 1.3 81.1 - - - +
497A GLY* 1.3 63.6 + - - +
499A PRO 4.4 0.7 - - - +
500A PRO* 3.8 18.8 - - + +
501A PRO* 3.7 22.1 - - + +
504A THR* 4.0 20.9 - - + +
505A PHE* 3.6 32.6 + - - -
11D TYR* 3.8 21.4 + - - +
57F ILE* 4.0 9.4 - - - +
73F TRP* 3.8 17.8 - - - -
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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