Contacts of the helix formed by residues 38 - 45 (chain E) in PDB entry 6A5T
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 LEU 38 (chain E).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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5E ASN* 5.8 3.6 - - + +
8E ILE* 4.8 3.8 - - + +
9E SER* 4.4 20.2 - - - +
12E TRP* 3.5 46.2 - - + -
37E SER* 1.3 80.9 - - - +
39E GLU* 1.3 79.2 + - + +
40E GLU 3.6 0.4 - - - -
41E PHE* 3.0 24.6 - - + +
42E ARG* 3.6 12.7 + - - +
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Residues in contact with GLU 39 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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37E SER* 2.9 4.6 + - - +
38E LEU* 1.3 98.2 - - + +
40E GLU* 1.3 68.4 + - - +
41E PHE 2.9 1.6 - - - -
42E ARG* 2.9 39.2 + - - +
43E SER* 2.9 23.5 + - - +
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Residues in contact with GLU 40 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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35E ASP 5.2 0.5 - - - +
36E GLN* 3.7 27.5 - - + +
37E SER* 3.2 20.0 + - - +
39E GLU* 1.3 76.3 - - - +
41E PHE* 1.3 61.6 + - - +
43E SER* 3.0 12.5 + - - -
44E LYS* 2.9 33.1 + - - +
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Residues in contact with PHE 41 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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8E ILE* 3.7 35.9 - - + -
11E LEU* 3.6 34.8 - - + -
12E TRP* 4.0 31.6 - + + -
15E PHE* 4.3 9.0 - + + -
36E GLN* 3.1 30.0 - - - +
37E SER 4.6 0.2 - - - +
38E LEU* 3.0 20.1 + - + +
40E GLU* 1.3 77.7 - - - +
42E ARG* 1.3 58.1 + - - +
44E LYS* 3.0 2.4 + - - -
45E ILE* 2.8 51.4 + - + +
46E CYS* 5.8 1.1 - - - -
52E PRO* 6.5 0.2 - - + -
57E MET* 3.8 22.4 - - + -
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Residues in contact with ARG 42 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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4E ASN* 5.4 5.0 + - - -
5E ASN* 3.2 28.3 + - - +
8E ILE* 3.8 22.9 - - + +
38E LEU* 3.6 11.0 + - + +
39E GLU* 2.9 37.7 + - - +
41E PHE* 1.3 80.1 - - - +
43E SER* 1.3 62.2 + - - +
46E CYS* 3.0 48.2 - - - +
47E ASP 5.4 0.2 - - - +
49E MET 5.3 1.6 + - - -
50E GLY* 4.8 13.1 + - - -
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Residues in contact with SER 43 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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39E GLU* 2.9 15.2 + - - +
40E GLU* 3.0 15.5 + - - -
42E ARG* 1.3 80.1 - - - +
44E LYS* 1.3 65.3 + - - +
46E CYS 4.5 4.2 - - - +
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Residues in contact with LYS 44 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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33E GLU* 5.0 9.7 + - - -
36E GLN* 4.7 14.5 - - - +
40E GLU* 2.9 23.1 + - - +
41E PHE* 5.0 0.2 - - - -
43E SER* 1.3 82.6 - - - +
45E ILE* 1.3 82.0 + - + +
46E CYS 3.5 5.3 + - - +
53E GLN* 5.5 0.3 - - - +
56E LEU* 4.8 9.4 - - - +
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Residues in contact with ILE 45 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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11E LEU* 4.8 0.9 - - + -
36E GLN* 5.3 1.6 - - - +
41E PHE* 2.8 43.0 + - + +
44E LYS* 1.3 92.3 - - + +
46E CYS* 1.3 65.2 + - - +
51E ASN 3.1 2.6 - - - +
52E PRO* 3.5 5.2 - - + +
53E GLN* 3.0 51.7 + - + +
56E LEU* 4.7 17.5 - - + +
57E MET* 3.7 40.2 - - + -
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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