Contacts of the helix formed by residues 494 - 501 (chain A) in PDB entry 1YOK
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 GLU 494 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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491A GLN 4.8 0.7 - - - +
492A GLN* 3.3 21.8 - - - +
493A THR* 1.3 83.0 + - - +
495A LYS* 1.3 66.8 + - - +
496A PHE 3.3 1.6 - - - -
497A GLY* 3.2 6.2 + - - +
498A GLN* 3.1 52.2 + - + +
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Residues in contact with LYS 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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441A LEU* 2.8 42.3 + - + +
442A GLN* 3.7 5.5 + - - +
447A GLU* 2.9 34.9 + - - +
485A THR* 4.3 12.6 - - - -
489A TYR* 3.5 36.8 - - + -
492A GLN* 3.3 39.4 + - + +
493A THR 3.3 0.4 - - - -
494A GLU* 1.3 79.1 - - - +
496A PHE* 1.3 66.3 + - - +
498A GLN* 3.4 9.9 + - - +
499A LEU* 3.2 29.8 + - + +
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Residues in contact with PHE 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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478A ASN* 3.8 22.0 - - - -
481A LEU* 4.0 22.2 - - + -
482A LEU* 3.5 57.2 - - + -
485A THR* 3.6 21.2 + - - +
493A THR 4.3 8.4 + - - +
494A GLU 3.3 0.2 - - - -
495A LYS* 1.3 80.8 - - - +
497A GLY* 1.3 67.8 + - - +
499A LEU* 3.1 5.3 + - - +
500A LEU* 3.1 51.9 + - + +
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Residues in contact with GLY 497 (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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493A THR 5.0 0.8 + - - -
494A GLU* 3.2 8.0 + - - +
496A PHE* 1.3 87.4 - - - +
498A GLN* 1.3 62.2 + - - +
500A LEU* 3.2 8.3 + - - +
501A LEU* 3.0 32.4 + - - +
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Residues in contact with GLN 498 (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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441A LEU* 3.1 40.5 - - + +
494A GLU* 3.1 45.1 + - + +
495A LYS* 3.9 6.4 - - - +
497A GLY* 1.3 74.6 - - - +
499A LEU* 1.3 61.8 + - - +
501A LEU* 3.4 10.8 + - + -
502A ARG* 2.9 36.7 + - - +
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Residues in contact with LEU 499 (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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438A LEU* 4.5 3.1 - - + -
441A LEU* 4.0 20.4 - - + -
443A PHE* 3.6 33.4 - - + -
447A GLU* 3.7 38.1 - - + +
451A LEU* 3.9 22.1 - - + +
481A LEU* 3.9 22.0 - - + -
485A THR* 4.4 7.2 - - + -
495A LYS* 3.2 18.2 + - + +
496A PHE 3.1 7.5 + - - +
498A GLN* 1.3 76.8 - - - +
500A LEU* 1.3 63.6 + - - +
502A ARG* 3.1 21.5 + - - +
503A LEU* 3.9 2.3 + - - +
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Residues in contact with LEU 500 (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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451A LEU* 5.1 0.9 - - + -
454A LEU* 3.9 28.3 - - + -
478A ASN* 4.6 13.0 - - - +
481A LEU* 4.3 12.1 - - + -
496A PHE* 3.1 48.9 + - + +
497A GLY* 3.7 8.3 - - - +
499A LEU* 1.3 78.6 - - - +
501A LEU* 1.3 63.7 + - + +
502A ARG 3.2 0.2 - - - -
503A LEU* 3.3 26.9 + - + +
504A PRO* 3.4 8.1 - - - +
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Residues in contact with LEU 501 (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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497A GLY* 3.0 21.6 + - - +
498A GLN* 3.9 8.5 - - + +
499A LEU 3.2 0.6 - - - -
500A LEU* 1.3 76.2 - - + +
502A ARG* 1.3 75.4 + - - +
503A LEU 3.2 0.9 - - - -
504A PRO* 3.3 22.7 - - + +
505A GLU* 3.9 16.5 + - - +
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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