Contacts of the helix formed by residues 129 - 137 (chain A) in PDB entry 1WG8
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 129 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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119A LEU 3.7 10.5 - - - -
120A ASP* 3.7 11.9 - - - +
122A ARG* 3.5 36.6 - - - +
127A GLY 4.9 0.4 - - - +
128A PRO* 1.3 75.0 - - + +
130A ALA* 1.3 65.6 + - - +
131A LYS* 3.3 19.9 - - - +
132A GLU* 3.1 28.8 + - - +
133A VAL* 3.2 12.3 + - - +
205A VAL* 4.2 2.0 - - - -
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Residues in contact with ALA 130 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
119A LEU* 4.0 11.2 - - + +
120A ASP 2.9 19.7 + - - +
121A MET* 3.9 34.8 - - + -
129A THR* 1.3 73.1 - - - +
131A LYS* 1.3 56.7 + - - +
133A VAL* 3.2 4.0 + - - +
134A VAL* 2.9 35.9 + - + +
201A LEU* 4.7 8.3 - - + -
205A VAL* 3.7 15.7 - - + +
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Residues in contact with LYS 131 (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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119A LEU* 3.0 29.8 + - + +
129A THR* 3.3 8.5 - - - +
130A ALA* 1.3 75.5 - - - +
132A GLU* 1.3 70.6 + - + +
134A VAL* 3.4 4.8 - - - +
135A ASN* 2.7 44.6 + - + +
170A PRO* 4.8 6.3 - - - -
171A ILE 3.7 11.7 - - - +
172A GLU* 3.3 41.8 + - - +
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Residues in contact with GLU 132 (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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128A PRO* 3.2 21.0 - - + +
129A THR* 3.1 35.2 + - - +
131A LYS* 1.3 83.1 - - + +
133A VAL* 1.3 60.5 + - - +
135A ASN* 4.8 0.9 - - - -
136A ARG* 3.0 68.7 + - - +
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Residues in contact with VAL 133 (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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128A PRO* 4.9 11.2 - - + +
129A THR 3.2 14.6 + - - +
130A ALA* 3.2 9.6 + - - +
132A GLU* 1.3 76.3 - - - +
134A VAL* 1.3 59.6 + - - +
137A LEU* 3.0 44.4 + - + +
142A LEU* 5.0 2.0 - - + +
145A LEU* 3.8 19.3 - - + -
201A LEU* 3.8 22.2 - - + -
204A TYR* 3.8 24.7 - - + -
205A VAL* 4.3 10.5 - - + -
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Residues in contact with VAL 134 (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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119A LEU* 4.0 19.1 - - + -
130A ALA* 2.9 19.7 + - + +
131A LYS 3.4 11.2 - - - +
133A VAL* 1.3 75.4 - - - +
135A ASN* 1.3 70.6 + - - +
142A LEU* 5.1 6.5 - - + -
162A ILE* 3.6 25.1 - - + +
166A ARG* 2.8 26.6 + - - +
171A ILE* 4.2 11.7 - - + -
177A LEU* 4.3 12.1 - - + -
201A LEU* 3.6 36.1 - - + -
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Residues in contact with ASN 135 (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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131A LYS* 2.7 39.9 + - + +
132A GLU* 4.4 2.5 - - - +
134A VAL* 1.3 82.3 - - - +
136A ARG* 1.3 65.1 + - + +
166A ARG* 3.4 31.7 + - - +
170A PRO* 3.4 13.2 - - - +
171A ILE* 2.9 45.5 + - - +
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Residues in contact with ARG 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 GLU* 3.0 52.4 + - - +
135A ASN* 1.3 87.3 - - + +
137A LEU* 1.3 65.2 + - - +
138A PRO* 3.4 7.3 - - - +
166A ARG* 3.9 3.6 + - - -
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Residues in contact with LEU 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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133A VAL* 3.0 31.6 + - + +
136A ARG* 1.3 75.9 - - - +
138A PRO* 1.3 77.3 - - + +
139A LEU* 4.5 0.2 - - - -
141A ALA* 4.0 17.3 - - + +
142A LEU* 3.9 25.8 - - + +
145A LEU* 3.5 31.9 - - + -
166A ARG* 2.8 29.3 + - - +
204A TYR* 4.0 20.2 - - + +
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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