Contacts of the helix formed by residues 102 - 107 (chain B) in PDB entry 3T0E
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 ALA 102 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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98B GLU 3.8 11.6 + - - +
99B GLN 2.8 11.6 + - - +
101B ARG* 1.3 77.7 - - - +
103B ALA* 1.3 68.5 + - - +
104B VAL* 3.3 4.0 - - - -
105B ASP* 2.9 16.9 + - + +
106B THR* 3.0 24.4 + - + +
31C TYR* 4.7 5.6 - - - +
50C LEU* 5.9 4.5 - - + -
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Residues in contact with ALA 103 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
6B GLU* 5.7 2.9 - - - +
55B PHE* 3.3 43.1 - - + -
71B SER* 5.8 0.7 - - - -
99B GLN 3.2 4.2 + - - -
100B LYS* 3.0 22.1 + - + +
101B ARG 3.2 1.0 - - - -
102B ALA* 1.3 76.9 - - - +
104B VAL* 1.3 67.6 + - + +
105B ASP 2.7 2.4 + - - -
106B THR* 3.9 5.6 - - - -
107B TYR* 2.7 30.4 + - + +
108B CYS 4.4 0.2 - - - -
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Residues in contact with VAL 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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53B VAL* 3.5 27.8 - - + +
55B PHE* 3.6 13.9 - - + -
71B SER* 3.5 25.8 - - - +
101B ARG 4.9 6.7 + - - +
102B ALA* 4.5 4.9 - - - +
103B ALA* 1.3 77.8 - - - +
105B ASP* 1.3 68.6 - - - +
108B CYS* 3.4 10.2 - - - +
109B ARG* 2.8 56.0 + - - +
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Residues in contact with ASP 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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102B ALA* 2.9 12.0 + - + +
103B ALA 2.7 4.0 + - - -
104B VAL* 1.3 88.0 - - + +
106B THR* 1.3 63.9 + - + +
109B ARG* 2.9 44.6 + - - +
110B HIS* 4.1 5.4 + - - +
50C LEU* 6.0 5.8 - - + +
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Residues in contact with THR 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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6B GLU* 5.0 4.3 + - - -
99B GLN 4.5 2.4 + - - -
102B ALA* 3.0 26.1 + - + +
103B ALA* 2.9 6.6 + - - -
105B ASP* 1.3 74.6 - - + +
107B TYR* 1.3 62.4 + - - +
110B HIS* 3.2 14.3 - - - +
29C THR* 3.2 37.8 + - - +
31C TYR* 3.9 24.8 + - + +
50C LEU* 3.7 35.4 - - + -
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Residues in contact with TYR 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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7A ILE* 4.3 7.8 - - + +
9A GLN* 3.3 40.7 + - - +
24A PHE* 3.5 7.1 - - - -
4B GLY 6.4 0.7 - - - -
5B ALA* 4.0 5.2 - - - -
6B GLU* 2.9 58.6 - - + +
42B HIS* 4.0 9.6 + - + +
43B GLU 4.1 2.0 - - - -
44B CYS* 3.2 31.2 - - - -
55B PHE* 4.5 6.3 - + + -
103B ALA* 2.7 22.1 + - - +
106B THR* 1.3 72.4 + - - +
108B CYS* 1.3 80.8 + - - +
110B HIS* 3.4 3.5 + - - +
111B ASN* 3.0 47.7 + - - +
29C THR* 5.5 0.9 - - - -
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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