Contacts of the helix formed by residues 752 - 756 (chain F) in PDB entry 1DE4
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 ASP 752 (chain F).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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394C LYS* 5.7 0.5 - - - +
399C PRO* 4.2 4.5 - - - +
400C ASP* 3.7 31.4 + - - +
402C TYR* 6.0 3.1 - - - -
473C SER* 6.1 1.2 - - - -
673F LYS* 4.6 8.8 + - - -
747F ASN 5.5 0.4 - - - -
751F GLY* 1.3 80.6 - - - +
753F VAL* 1.3 56.4 + - - +
754F TRP* 2.9 37.1 + - + +
755F ASP* 2.6 46.2 + - - +
756F ILE* 4.1 1.6 - - - +
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Residues in contact with VAL 753 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
182C TRP* 4.8 9.2 + - + +
402C TYR* 3.2 32.4 + - + +
449C ILE* 4.2 6.5 - - + -
466C TRP* 4.8 10.3 - - + +
470C TYR* 4.0 17.3 - - + -
473C SER* 3.3 35.0 + - - +
474C LEU* 3.7 16.4 - - + -
752F ASP* 1.3 68.8 - - - +
754F TRP* 1.3 80.2 + - + +
755F ASP 3.0 1.2 + - - -
756F ILE* 3.1 28.7 + - - +
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Residues in contact with TRP 754 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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180C LYS* 3.0 28.6 + - + -
182C TRP* 3.6 39.4 - + + +
392C VAL* 3.6 33.0 - - + -
394C LYS* 3.6 27.6 - - + +
399C PRO* 3.2 26.0 - - + -
402C TYR* 3.8 22.7 - + - -
447C SER* 3.4 15.7 - - - -
449C ILE* 3.8 27.6 - - + -
752F ASP* 2.9 32.5 + - + +
753F VAL* 1.3 80.2 - - + +
755F ASP* 1.3 85.4 + - - +
756F ILE 3.3 2.6 + - - -
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Residues in contact with ASP 755 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
180C LYS* 3.9 16.4 + - - +
394C LYS* 4.0 15.2 + - - -
655F ARG* 3.4 25.6 + - - +
750F SER* 4.5 3.3 + - - +
751F GLY 3.8 10.3 - - - +
752F ASP* 2.6 30.2 + - - +
754F TRP* 1.3 98.7 + - - +
756F ILE* 1.3 58.1 + - - +
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Residues in contact with ILE 756 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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180C LYS* 5.0 1.5 - - - +
470C TYR* 4.1 22.9 - - + +
473C SER* 4.2 2.5 - - - +
651F ARG* 6.0 0.2 + - - -
655F ARG* 4.9 5.5 + - - +
747F ASN* 3.5 60.1 - - + +
750F SER* 4.1 6.5 - - - +
752F ASP 4.1 2.7 - - - +
753F VAL* 3.1 31.4 + - - +
754F TRP 3.3 3.6 + - - -
755F ASP* 1.3 81.9 - - - +
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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