Contacts of the helix formed by residues 135 - 146 (chain A) in PDB entry 4D0G
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 135 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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96A ARG* 5.7 0.9 - - - +
132A ARG* 3.8 7.0 - - - +
134A VAL* 1.3 75.5 - - - +
136A TYR* 1.3 65.1 + - - +
137A GLU* 3.5 9.9 + - - +
138A GLU* 3.1 40.4 + - - +
139A ALA* 3.4 18.5 + - - +
152A GLU* 4.5 1.3 - - - +
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Residues in contact with TYR 136 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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132A ARG* 3.3 14.7 - - - +
135A THR* 1.3 72.7 - - - +
137A GLU* 1.3 85.2 + - + +
139A ALA* 3.3 2.6 + - - +
140A LYS* 2.8 36.6 + - + +
150A PHE* 3.5 31.6 + + - -
151A LEU* 5.8 2.8 - - - +
152A GLU* 3.6 38.6 - - + +
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Residues in contact with GLU 137 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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135A THR* 3.2 8.9 + - - +
136A TYR* 1.3 102.3 - - + +
138A GLU* 1.3 54.0 + - - +
140A LYS* 3.4 7.0 + - - +
141A GLN* 2.8 35.4 + - - +
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Residues in contact with GLU 138 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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96A ARG* 2.8 46.2 + - - -
99A TYR* 3.0 23.5 + - + +
134A VAL* 3.4 4.4 - - + +
135A THR* 3.1 42.0 + - - +
137A GLU* 1.3 76.4 - - - +
139A ALA* 1.3 63.2 + - - +
141A GLN* 3.4 8.2 - - - +
142A PHE* 3.0 22.0 + - - +
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Residues in contact with ALA 139 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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91A TYR* 3.0 30.3 - - + +
99A TYR* 3.5 23.1 - - + -
121A LEU* 3.6 7.7 - - + +
134A VAL* 4.6 0.4 - - + -
135A THR 3.7 7.4 - - - +
136A TYR 3.3 8.0 + - - +
138A GLU* 1.3 80.3 - - - +
140A LYS* 1.3 60.0 + - - +
142A PHE* 3.4 1.6 + - - +
143A ALA* 3.0 27.5 + - - +
150A PHE* 3.7 11.0 - - + -
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Residues in contact with LYS 140 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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136A TYR* 2.8 30.4 + - + +
137A GLU* 3.7 11.0 - - - +
139A ALA* 1.3 69.3 - - - +
141A GLN* 1.3 68.3 + - - +
143A ALA* 3.3 4.1 + - - +
144A GLU* 3.2 32.8 + - - +
150A PHE* 3.7 26.6 - - + -
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Residues in contact with GLN 141 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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137A GLU 2.8 21.1 + - - +
138A GLU* 3.4 10.5 - - - +
139A ALA 3.2 0.2 - - - -
140A LYS* 1.3 73.1 - - - +
142A PHE* 1.3 64.9 + - - +
144A GLU* 2.9 30.6 + - - +
145A GLU* 3.1 41.9 + - - +
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Residues in contact with PHE 142 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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89A MET* 4.8 2.9 - - + -
99A TYR* 4.0 12.1 - + - +
102A LEU* 4.1 33.2 - - + -
103A SER* 4.3 24.7 - - - -
106A LEU* 4.3 8.3 - - + -
121A LEU* 4.1 14.8 - - + -
138A GLU 3.0 14.2 + - - +
139A ALA* 3.7 3.6 - - - +
141A GLN* 1.3 79.1 - - - +
143A ALA* 1.3 65.3 + - - +
145A GLU* 3.6 11.8 + - - -
146A ASN* 2.7 58.5 + - - +
148A LEU* 3.9 20.4 - - + -
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Residues in contact with ALA 143 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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121A LEU* 4.2 4.7 - - + -
139A ALA 3.0 14.3 + - - +
140A LYS 3.4 9.9 - - - +
141A GLN 3.1 0.2 - - - -
142A PHE* 1.3 81.8 - - - +
144A GLU* 1.3 56.5 + - + +
146A ASN 3.4 0.2 - - - -
147A GLY 3.0 5.9 + - - -
148A LEU* 2.5 55.2 + - + +
150A PHE* 3.6 28.5 - - + -
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Residues in contact with GLU 144 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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140A LYS* 3.3 19.6 - - - +
141A GLN* 2.9 21.5 + - - +
143A ALA* 1.3 76.4 - - + +
145A GLU* 1.3 68.9 + - - +
146A ASN 3.1 1.1 - - - -
147A GLY* 2.9 15.3 + - - +
148A LEU 4.7 3.6 - - - +
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Residues in contact with GLU 145 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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141A GLN* 3.1 38.2 + - - +
142A PHE* 3.6 21.6 + - - +
144A GLU* 1.3 77.7 - - - +
146A ASN* 1.3 65.4 + - - +
147A GLY 3.6 0.3 + - - -
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Residues in contact with ASN 146 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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106A LEU* 3.7 20.3 - - + +
110A ARG* 3.2 14.5 + - - +
142A PHE* 2.7 59.6 + - - +
145A GLU* 1.3 82.3 + - - +
147A GLY* 1.3 65.5 + - - +
148A LEU* 2.8 29.6 - - + +
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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