Contacts of the helix formed by residues 53 - 60 (chain I) in PDB entry 2DSP
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 53 (chain I).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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68B PRO* 6.2 3.8 - - + -
69B LEU* 3.7 13.5 - - - -
3I GLU* 5.8 0.2 - - - -
51I SER* 5.2 2.6 - - - +
52I CYS* 1.3 78.5 - - - +
54I LEU* 1.3 64.0 + - - +
55I ARG* 3.0 49.2 + - - +
56I ARG* 3.1 16.6 + - - +
57I LEU* 3.1 15.1 + - - +
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Residues in contact with LEU 54 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
58B ARG* 3.9 12.1 - - - +
60B TYR* 3.7 35.2 - - + +
61B PRO* 3.8 25.6 - - + -
68B PRO* 4.9 8.4 - - + +
69B LEU* 3.9 17.9 - - + +
72B LEU* 3.8 17.5 - - + -
17I VAL* 3.7 30.5 - - + -
53I ASP* 1.3 74.2 - - - +
55I ARG* 1.3 57.4 + - - +
57I LEU* 3.3 4.8 + - + +
58I GLU* 2.9 40.9 + - - +
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Residues in contact with ARG 55 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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53I ASP* 3.0 39.5 + - - +
54I LEU* 1.3 79.1 - - - +
56I ARG* 1.3 84.0 + - - +
58I GLU* 3.6 12.6 + - - +
59I MET* 3.2 46.4 + - + +
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Residues in contact with ARG 56 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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43I ILE* 4.1 5.6 - - + -
46I GLU* 2.9 47.5 + - + +
47I CYS* 3.8 22.9 - - - -
50I ARG* 5.9 3.2 - - - +
51I SER* 4.1 14.7 + - - +
52I CYS* 5.0 0.2 - - - -
53I ASP* 3.1 25.1 + - - +
55I ARG* 1.3 97.5 - - - +
57I LEU* 1.3 65.0 + - - +
59I MET* 3.2 33.4 + - - +
60I TYR* 3.3 17.7 - - - -
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Residues in contact with LEU 57 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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69B LEU* 3.7 26.5 - - + -
5I LEU* 4.7 2.2 - - + -
10I LEU* 3.9 19.3 - - + -
13I ALA* 4.0 23.8 - - + +
14I LEU* 3.9 19.6 - - + +
17I VAL* 4.0 24.2 - - + -
43I ILE* 4.0 7.2 - - + -
47I CYS* 3.7 25.6 - - - -
52I CYS* 3.8 5.2 - - - -
53I ASP 3.1 14.3 + - - +
54I LEU* 3.3 7.6 + - + +
56I ARG* 1.3 75.1 - - - +
58I GLU* 1.3 61.4 + - - +
60I TYR* 3.0 16.8 + - - +
61I CYS* 3.6 10.8 + - - -
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Residues in contact with GLU 58 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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58B ARG* 2.9 34.4 + - - +
60B TYR* 5.3 0.5 - - - -
89B GLN* 4.3 12.3 + - - -
17I VAL* 3.8 16.8 - - + -
21I ARG* 4.5 6.3 + - - +
54I LEU* 2.9 24.6 + - - +
55I ARG* 3.7 10.4 - - - +
57I LEU* 1.3 77.1 - - - +
59I MET* 1.3 60.9 + - - +
60I TYR 3.2 0.9 + - - -
61I CYS* 3.3 27.6 + - - +
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Residues in contact with MET 59 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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24I TYR* 5.9 0.3 - - - -
27I LYS* 3.1 39.5 + - - +
55I ARG* 3.2 35.2 - - + +
56I ARG* 3.2 31.8 + - - +
58I GLU* 1.3 76.6 - - + +
60I TYR* 1.3 64.3 + - + +
61I CYS 3.5 4.4 + - - +
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Residues in contact with TYR 60 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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14I LEU* 4.2 11.7 - - + -
23I PHE* 3.3 3.4 - - - -
24I TYR* 2.9 58.6 + - + +
25I PHE 3.9 2.5 - - - -
27I LYS* 3.3 29.6 - - + +
41I THR* 2.8 38.5 + - - -
42I GLY 3.4 1.2 - - - -
43I ILE* 3.4 40.6 - - + -
46I GLU* 2.9 28.5 + - - -
56I ARG* 3.3 20.4 - - - -
57I LEU 3.0 10.0 + - - +
59I MET* 1.3 82.5 - - + +
61I CYS* 1.3 64.3 + - - +
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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