Contacts of the helix formed by residues 100 - 107 (chain B) in PDB entry 3ZXT
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 GLU 100 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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98B GLY 5.1 0.3 - - - +
99B GLY* 1.3 74.7 - - - -
101B LEU* 1.3 56.8 + - - +
102B PHE* 3.9 17.1 - - - +
103B ASP* 2.8 45.6 + - - +
104B PHE* 3.1 12.2 + - - +
142B PRO 4.1 2.2 - - - +
143B GLU* 3.3 31.4 - - - +
145B ILE 3.4 7.0 - - - +
146B MET* 3.7 10.7 - - + +
147B LEU* 4.9 0.9 - - - -
1279B ACP 2.4 43.9 + - - +
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Residues in contact with LEU 101 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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99B GLY 3.9 0.6 + - - -
100B GLU* 1.3 68.0 - - - +
102B PHE* 1.3 67.2 + - - +
104B PHE* 3.2 6.0 + - + -
105B LEU* 2.8 53.0 + - + +
119B PHE* 4.2 37.9 - - + -
123B ILE* 5.1 7.4 - - + -
142B PRO* 3.6 23.3 - - + +
145B ILE* 2.8 37.8 + - + +
147B LEU* 4.2 10.6 - - + +
206B ILE* 5.1 13.5 - - + -
210B LEU* 5.3 5.6 - - + -
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Residues in contact with PHE 102 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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100B GLU* 3.9 15.7 - - - +
101B LEU* 1.3 79.1 - - - +
103B ASP* 1.3 75.5 + - - +
105B LEU* 3.5 5.4 + - - +
106B ALA* 3.0 31.5 + - + +
142B PRO* 3.3 27.9 + - + +
143B GLU* 3.9 19.3 - - + +
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Residues in contact with ASP 103 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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99B GLY* 4.9 4.3 - - - -
100B GLU* 2.8 43.9 + - - +
102B PHE* 1.3 84.7 - - - +
104B PHE* 1.3 65.8 + - - +
106B ALA* 3.2 5.6 + - - -
107B GLU* 2.9 40.8 + - - +
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Residues in contact with PHE 104 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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98B GLY 5.7 1.1 - - - +
100B GLU 3.1 11.2 + - - +
101B LEU* 3.7 13.7 - - + +
103B ASP* 1.3 77.8 - - - +
105B LEU* 1.3 65.9 + - + +
107B GLU* 3.2 14.4 + - + +
108B LYS* 3.6 53.1 + - + +
111B LEU* 4.9 5.4 - - + -
115B GLU* 6.6 0.2 - - + -
119B PHE* 3.7 34.8 - + - -
147B LEU* 3.8 25.1 - - + -
150B ARG* 3.6 33.9 - - + -
152B VAL 5.4 1.1 - - - -
155B PRO* 4.1 16.4 - - + -
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Residues in contact with LEU 105 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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101B LEU* 2.8 47.9 + - + +
102B PHE* 3.7 4.9 - - - +
104B PHE* 1.3 82.3 - - + +
106B ALA* 1.3 61.9 + - - +
107B GLU 3.3 0.3 + - - -
108B LYS* 3.4 18.5 + - - +
111B LEU* 4.0 36.6 - - + -
119B PHE* 5.5 0.7 - - + -
142B PRO* 4.8 8.7 - - + -
209B ILE* 4.5 19.3 - - + +
210B LEU* 3.8 22.7 - - + -
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Residues in contact with ALA 106 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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102B PHE* 3.0 24.1 + - + +
103B ASP* 3.2 13.4 + - - +
105B LEU* 1.3 76.3 - - - +
107B GLU* 1.3 67.9 + - - +
108B LYS 3.6 1.7 + - - +
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Residues in contact with GLU 107 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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103B ASP* 2.9 36.0 + - - +
104B PHE* 3.2 7.8 + - + +
105B LEU 3.1 0.8 - - - -
106B ALA* 1.3 87.4 - - - +
108B LYS* 1.3 63.5 + - + +
150B ARG* 6.0 0.7 + - - -
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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