Contacts of the helix formed by residues 494 - 500 (chain C) in PDB entry 3DLX
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 494 (chain C).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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489C LEU* 3.8 4.9 - - - -
492C GLY 5.1 1.0 + - - -
493C LEU* 1.3 75.1 + - - +
495C VAL* 1.3 70.7 + - + +
496C ASP* 3.1 22.9 - - + +
497C ASP* 2.9 33.5 + - - +
498C VAL* 3.1 16.6 + - - +
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Residues in contact with VAL 495 (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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486C LEU* 3.9 15.3 - - + -
489C LEU* 3.8 7.1 - - + +
494C THR* 1.3 75.6 - - + +
496C ASP* 1.3 57.4 + - - +
498C VAL* 3.4 6.9 + - - +
499C GLN* 3.0 28.2 + - + +
506C PHE* 3.9 11.3 - - + -
508C VAL* 3.9 33.2 - - + -
512C LEU* 4.2 14.8 - - + -
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Residues in contact with ASP 496 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
494C THR* 3.1 15.0 - - + +
495C VAL* 1.3 79.8 - - - +
497C ASP* 1.3 62.4 + - - +
499C GLN* 3.3 13.1 + - - +
500C LYS* 3.0 23.6 + - - +
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Residues in contact with ASP 497 (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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473C LYS* 4.9 5.4 + - + +
492C GLY 4.5 1.9 - - - +
493C LEU* 3.7 25.5 - - + +
494C THR* 2.9 39.5 + - - +
496C ASP* 1.3 76.8 - - - +
498C VAL* 1.3 63.8 + - + +
500C LYS* 3.4 17.4 + - - +
501C SER* 3.6 12.0 + - - -
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Residues in contact with VAL 498 (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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443C HIS* 4.0 8.7 - - + -
473C LYS* 4.2 18.6 - - + +
474C ALA* 4.2 5.8 - - + -
476C PHE* 3.8 29.2 - - + -
486C LEU* 4.3 5.6 - - + -
489C LEU* 3.2 35.4 - - + -
493C LEU* 4.9 1.6 - - + -
494C THR 3.1 6.1 + - - +
495C VAL* 3.7 8.1 - - - +
497C ASP* 1.3 76.7 - - + +
499C GLN* 1.3 64.2 + - - +
501C SER* 3.0 14.2 + - - +
502C THR* 2.9 24.4 + - - +
506C PHE* 3.9 10.8 - - + -
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Residues in contact with GLN 499 (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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450C HIS* 4.9 0.5 - - - -
495C VAL* 3.0 18.6 + - + +
496C ASP* 3.5 15.0 - - - +
498C VAL* 1.3 77.2 - - - +
500C LYS* 1.3 59.4 + - - +
502C THR 3.2 18.8 + - - +
504C CYS 3.0 23.8 + - - -
505C ASP* 3.8 19.7 - - - +
506C PHE* 3.7 20.6 + - + -
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Residues in contact with LYS 500 (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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448C ASN* 3.5 17.4 + - - +
450C HIS* 3.6 10.5 - - - -
496C ASP* 3.0 15.0 + - - +
497C ASP* 3.6 13.0 - - - +
498C VAL 3.2 0.6 - - - -
499C GLN* 1.3 76.0 - - - +
501C SER* 1.3 59.5 + - - +
502C THR 3.5 0.4 - - - -
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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