Contacts of the helix formed by residues 2080 - 2084 (chain A) in PDB entry 1APJ
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 LYS2080 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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2A ALA* 5.7 0.7 - - + -
2054A GLN* 2.8 47.8 + - + +
2057A ARG 3.5 1.4 + - - +
2079A SER* 1.3 71.3 - - - +
2081A GLN* 1.3 69.2 - - + +
2083A CYS* 3.3 0.7 - - - +
2084A CYS* 3.0 36.5 + - - -
2092A TRP* 2.9 63.0 - - + +
2099A CYS* 5.9 0.4 - - - -
2100A PRO* 6.3 1.4 - - - +
2109A GLN* 4.9 14.1 + - - +
2110A ILE* 3.7 22.6 - - + +
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Residues in contact with GLN2081 (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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1A SER* 4.3 11.5 + - - -
2A ALA* 3.5 38.2 - - + +
2054A GLN* 3.2 17.8 + - - +
2079A SER* 2.8 1.8 - - - -
2080A LYS* 1.3 80.6 - - + +
2082A GLU* 1.3 51.5 + - - +
2083A CYS 2.9 4.8 + - - -
2084A CYS 3.3 0.7 + - - -
2085A CYS* 2.7 43.0 + - - +
2109A GLN 3.3 17.6 + - - +
2110A ILE* 2.9 46.2 + - + +
2112A PRO* 5.0 4.8 - - - +
2117A ILE* 5.6 2.4 - - + +
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Residues in contact with GLU2082 (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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2078A HIS* 3.4 36.4 + - + +
2079A SER* 2.7 30.7 + - - +
2081A GLN* 1.3 74.7 - - - +
2083A CYS* 1.3 57.3 + - - +
2085A CYS* 4.6 0.7 - - - -
2086A ALA* 3.9 5.6 - - + +
2087A LEU* 2.8 37.5 + - + +
2117A ILE* 6.4 0.2 - - - -
2118A ILE* 3.1 47.0 - - + +
2120A GLY* 4.5 0.9 - - - -
2121A PRO* 3.7 15.6 - - - +
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Residues in contact with CYS2083 (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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2061A CYS* 2.0 48.7 - - + -
2062A TYR 4.4 0.9 - - - -
2078A HIS 5.3 0.2 - - - +
2079A SER 2.8 4.1 + - - +
2080A LYS 3.3 5.6 - - - +
2081A GLN 2.9 1.2 - - - -
2082A GLU* 1.3 79.6 - - - +
2084A CYS* 1.3 53.5 + - - +
2087A LEU* 3.0 12.0 - - + +
2088A LYS 2.6 27.5 + - - -
2089A GLY 3.2 6.9 + - - -
2091A GLY 3.0 23.3 - - - -
2092A TRP* 3.3 31.9 - - + -
2099A CYS* 4.4 2.7 - - - -
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Residues in contact with CYS2084 (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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2080A LYS* 3.0 22.3 + - - -
2081A GLN 3.7 0.2 - - - -
2083A CYS* 1.3 74.5 - - - +
2085A CYS* 1.3 60.4 + - - +
2088A LYS* 3.6 21.1 - - - +
2089A GLY 4.1 3.8 - - - +
2092A TRP* 4.7 0.2 - - - -
2099A CYS* 2.0 54.3 - - + -
2100A PRO* 4.3 7.0 - - - +
2107A PHE* 4.0 16.1 - - - -
2110A ILE* 3.2 22.7 - - + -
2111A CYS* 4.2 0.5 - - - -
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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