Contacts of the helix formed by residues 50 - 57 (chain D) in PDB entry 1DKE
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 50 (chain D).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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48D LEU 3.7 0.8 - - - -
49D SER* 1.3 98.7 + - - +
51D PRO* 1.3 78.8 - - - +
52D ASP* 3.7 8.4 + - - +
53D ALA* 2.9 26.5 + - - +
54D VAL* 3.0 17.0 + - - +
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Residues in contact with PRO 51 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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119C PRO* 4.5 11.7 - - + -
120C ALA* 4.0 24.2 - - + +
33D VAL* 3.9 36.3 - - + -
50D THR* 1.3 88.0 - - - +
52D ASP* 1.3 66.8 + - - +
54D VAL* 3.4 0.5 + - - +
55D MET* 3.0 30.0 + - - +
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Residues in contact with ASP 52 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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119C PRO* 6.1 1.2 - - - +
50D THR* 3.1 7.9 + - - +
51D PRO* 1.3 82.5 - - - +
53D ALA* 1.3 55.7 + - - +
55D MET* 4.1 4.6 - - - +
56D GLY* 3.2 23.0 + - - -
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Residues in contact with ALA 53 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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47D ASP* 3.7 40.0 - - - +
49D SER* 4.2 2.7 - - - +
50D THR* 2.9 21.0 + - - +
52D ASP* 1.3 75.1 - - - +
54D VAL* 1.3 66.5 + - - +
56D GLY* 3.3 1.5 + - - -
57D ASN* 2.9 26.2 + - - +
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Residues in contact with VAL 54 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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29D GLY* 3.7 17.9 - - - +
32D LEU* 3.9 16.2 - - + -
33D VAL* 3.7 26.5 - - + -
39D GLN* 4.7 9.2 - - - +
47D ASP 4.1 2.6 + - - -
48D LEU* 3.8 41.1 - - + +
50D THR 3.0 17.1 + - - +
51D PRO 3.6 5.8 - - - +
53D ALA* 1.3 77.1 - - - +
55D MET* 1.3 65.7 + - - +
56D GLY 3.3 0.2 + - - -
57D ASN* 3.4 2.1 + - - -
60D VAL* 3.3 28.2 - - + +
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Residues in contact with MET 55 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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119C PRO* 3.9 34.3 - - + -
25D GLY 4.8 4.0 - - - +
26D GLU* 3.2 52.3 - - - +
29D GLY* 3.5 30.3 - - - +
30D ARG* 3.8 2.5 - - + -
33D VAL* 4.4 3.8 - - + -
51D PRO 3.0 19.0 + - - +
52D ASP* 4.1 5.2 - - - +
54D VAL* 1.3 85.2 - - - +
56D GLY* 1.3 57.4 + - - +
60D VAL* 5.0 3.9 - - - +
61D LYS* 3.3 24.3 - - - +
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Residues in contact with GLY 56 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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52D ASP 3.2 15.3 + - - -
53D ALA* 3.3 3.8 + - - -
55D MET* 1.3 77.4 - - - +
57D ASN* 1.3 61.4 + - - +
58D PRO* 3.1 9.8 - - - +
61D LYS* 4.3 13.9 + - - -
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Residues in contact with ASN 57 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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45D PHE* 2.6 23.1 + - - +
47D ASP* 2.9 31.0 + - - +
48D LEU* 4.7 0.6 - - - +
53D ALA 2.9 15.8 + - - +
54D VAL 3.4 10.4 + - - +
56D GLY* 1.3 72.4 - - - +
58D PRO* 1.3 60.2 - - - +
59D LYS* 2.9 35.6 + - - +
60D VAL* 2.7 39.0 + - + +
61D LYS* 3.0 12.9 + - - +
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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