Contacts of the helix formed by residues 134 - 140 (chain D) in PDB entry 3TJK
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 134 (chain D).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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130D ALA* 3.3 20.1 + - - +
131D PHE 3.2 5.2 + - - +
132D GLY 3.1 1.2 - - - -
133D ASP* 1.3 82.8 - - + +
135D LEU* 1.3 65.3 + - - +
136D GLU* 3.2 3.4 - - - -
137D GLU* 2.9 62.4 + - - +
138D PHE* 3.6 6.7 - - - -
225D VAL* 3.7 32.2 - - + +
226D ASP* 2.7 38.6 + - - +
229D LEU* 3.6 9.1 - - - +
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Residues in contact with LEU 135 (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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131D PHE 2.9 7.7 + - - +
132D GLY* 3.3 15.7 + - - +
133D ASP 3.5 1.0 - - - -
134D ARG* 1.3 76.5 - - - +
136D GLU* 1.3 56.9 + - - +
138D PHE* 2.9 24.1 + - + +
139D ARG* 2.9 55.9 + - + +
145D VAL* 3.8 39.5 - - + +
173D ARG* 3.7 45.7 - - + +
174D ILE* 4.3 9.2 - - + -
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Residues in contact with GLU 136 (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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134D ARG 3.1 1.4 + - - -
135D LEU* 1.3 76.8 - - - +
137D GLU* 1.3 57.7 - - + +
139D ARG* 3.9 22.0 - - - +
140D SER* 2.8 38.5 + - - -
173D ARG* 3.1 38.0 + - - +
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Residues in contact with GLU 137 (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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134D ARG* 2.9 63.9 + - - +
136D GLU* 1.3 79.1 - - + +
138D PHE* 1.3 55.5 + - - +
140D SER* 3.7 8.6 + - - -
141D ILE* 3.4 20.1 - - - +
229D LEU* 3.1 30.3 - - + +
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Residues in contact with PHE 138 (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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112D VAL* 3.8 21.1 - - + -
131D PHE* 3.5 34.8 - + - -
134D ARG 3.6 17.3 - - - -
135D LEU* 2.9 11.4 + - + +
137D GLU* 1.3 76.0 - - - +
139D ARG* 1.3 59.1 + - - +
141D ILE* 3.0 19.2 + - - +
143D THR* 2.9 51.1 + - + +
145D VAL* 3.8 19.3 - - + -
225D VAL* 3.8 24.9 - - + -
228D THR* 4.0 8.7 - - + -
229D LEU* 3.3 29.8 - - + -
232D VAL* 4.6 4.3 - - + -
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Residues in contact with ARG 139 (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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135D LEU* 2.9 42.7 + - + +
136D GLU* 3.9 23.3 - - - +
138D PHE* 1.3 76.3 - - - +
140D SER* 1.3 57.9 + - - +
141D ILE 3.1 0.2 - - - -
142D ASN* 3.1 16.3 + - - +
143D THR 3.4 13.9 - - - +
144D GLU* 3.0 33.2 + - - +
173D ARG* 3.3 36.6 + - - +
175D PRO* 5.6 4.8 - - - +
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Residues in contact with SER 140 (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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136D GLU* 2.8 24.8 + - - -
137D GLU* 3.7 10.6 + - - -
139D ARG* 1.3 76.2 - - - +
141D ILE* 1.3 67.0 + - - +
142D ASN 3.5 1.2 + - - -
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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