Contacts of the helix formed by residues 97 - 103 (chain J) in PDB entry 3TKR
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 ARG 97 (chain J).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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93J ALA* 3.5 17.4 + - - +
94J PHE 3.1 6.4 + - - +
96J ASP* 1.3 84.3 - - + +
98J LEU* 1.3 64.2 + - - +
99J GLU 3.2 2.9 - - - -
100J GLU* 2.9 62.5 + - + +
101J PHE* 3.6 7.9 - - + -
188J VAL* 3.7 30.2 - - + +
189J ASP* 2.8 35.4 + - - -
192J LEU* 3.4 12.3 - - - +
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Residues in contact with LEU 98 (chain J).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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94J PHE 3.1 5.4 + - - +
95J GLY* 3.4 15.5 + - - +
96J ASP 3.5 1.0 - - - -
97J ARG* 1.3 78.0 - - - +
99J GLU* 1.3 57.2 + - - +
101J PHE* 3.0 9.8 + - + +
102J ARG* 2.9 62.2 + - + +
107J GLU* 5.2 1.6 - - - +
108J VAL* 3.6 41.5 - - + +
136J ARG* 3.9 42.9 - - + +
137J ILE* 4.0 11.9 - - + -
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Residues in contact with GLU 99 (chain J).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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97J ARG 3.2 1.6 - - - -
98J LEU* 1.3 75.9 - - - +
100J GLU* 1.3 60.7 + - + +
102J ARG* 3.4 35.2 + - - +
103J SER* 2.8 34.5 + - - -
136J ARG* 3.1 32.9 + - - +
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Residues in contact with GLU 100 (chain J).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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97J ARG* 2.9 64.0 + - - +
99J GLU* 1.3 77.1 - - - +
101J PHE* 1.3 60.1 + - - +
103J SER* 3.4 14.3 + - - -
104J ILE* 3.7 14.2 - - - +
192J LEU* 3.6 22.7 - - + +
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Residues in contact with PHE 101 (chain J).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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75J VAL* 4.2 6.7 - - + -
94J PHE* 3.7 32.1 - + - -
97J ARG 3.6 17.9 - - - -
98J LEU* 3.0 11.0 + - + +
100J GLU* 1.3 76.3 - - - +
102J ARG* 1.3 61.1 + - - +
103J SER 3.2 1.6 - - - -
104J ILE* 2.9 17.8 + - + +
106J THR* 2.9 52.8 + - + +
108J VAL* 4.0 19.5 - - + -
188J VAL* 3.7 23.1 - - + -
191J THR* 4.1 17.3 - - + -
192J LEU* 3.5 36.3 - - + -
195J VAL* 4.7 3.8 - - + -
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Residues in contact with ARG 102 (chain J).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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98J LEU* 2.9 43.6 + - + +
99J GLU* 3.4 36.3 + - - +
101J PHE* 1.3 76.7 - - - +
103J SER* 1.3 61.7 + - - +
104J ILE 3.1 0.2 - - - -
105J ASN* 3.2 13.0 + - - +
106J THR 3.6 13.9 - - - +
107J GLU* 3.3 32.9 + - - +
136J ARG* 4.6 16.2 + - - +
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Residues in contact with SER 103 (chain J).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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99J GLU* 2.8 20.5 + - - -
100J GLU* 3.4 13.4 + - - -
102J ARG* 1.3 76.8 - - - +
104J ILE* 1.3 64.4 + - - +
105J ASN 3.5 0.4 - - - -
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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