Contacts of the helix formed by residues 134 - 141 (chain A) in PDB entry 2HEI
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 LYS 134 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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30A ALA* 2.9 30.3 + - - +
31A VAL 3.4 13.7 - - - +
101A ASP* 3.7 30.6 + - - +
102A ILE* 3.8 7.3 - - - +
103A THR* 4.9 0.7 - - + +
133A ASN* 1.3 89.8 + - - +
135A ALA* 1.3 55.9 + - - +
136A ASP* 3.1 10.3 - - - -
137A LEU* 2.8 40.4 + - + +
162A THR 3.1 2.4 + - - -
201A GDP 3.1 63.1 + - + +
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Residues in contact with ALA 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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102A ILE* 3.5 12.1 - - + -
132A GLY 4.1 2.0 - - - +
133A ASN 3.2 1.8 - - - -
134A LYS* 1.3 73.0 - - - +
136A ASP* 1.3 59.0 + - - +
137A LEU 3.0 6.1 + - - -
138A ALA* 3.3 19.9 + - - +
141A ARG* 5.5 0.7 - - - +
161A GLU* 3.9 29.4 - - + +
162A THR 3.0 16.7 + - - +
163A SER* 4.8 0.2 - - - -
168A MET* 3.7 25.0 - - + +
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Residues in contact with ASP 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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134A LYS* 3.5 2.8 - - - -
135A ALA* 1.3 76.9 - - - +
137A LEU* 1.3 72.0 + - - +
138A ALA* 3.3 3.5 + - - +
139A ASN* 4.3 4.2 - - - +
163A SER* 2.7 27.3 + - - +
165A LYS* 3.6 13.5 + - + +
166A THR* 3.9 17.0 - - + -
168A MET* 5.2 0.9 - - - +
201A GDP 2.7 49.0 + - - +
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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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102A ILE* 4.5 0.8 - - - +
103A THR* 3.7 17.2 - - + +
134A LYS* 2.8 30.7 + - + +
136A ASP* 1.3 99.3 - - - +
138A ALA* 1.3 52.6 + - - +
139A ASN* 3.1 10.5 - - - +
140A LYS* 2.8 62.8 + - + +
141A ARG* 3.5 3.1 + - - -
165A LYS* 5.8 2.9 - - - +
201A GDP 3.5 19.3 - - + +
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Residues in contact with ALA 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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102A ILE* 4.1 11.0 - - - -
135A ALA 3.3 17.4 + - - +
136A ASP 3.3 3.8 + - - +
137A LEU* 1.3 75.9 - - - +
139A ASN* 1.3 63.2 + - - +
141A ARG* 3.1 40.1 + - - +
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Residues in contact with ASN 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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136A ASP 4.3 3.6 - - - +
137A LEU* 3.5 18.9 - - - +
138A ALA* 1.3 78.3 + - - +
140A LYS* 1.3 75.6 + - - +
141A ARG 3.3 2.6 + - - +
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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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103A THR* 3.4 29.1 - - + +
137A LEU* 2.8 49.3 + - + +
139A ASN* 1.3 93.0 - - - +
141A ARG* 1.3 63.2 + - - +
142A MET* 3.4 8.7 + - - +
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Residues in contact with ARG 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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102A ILE* 3.7 24.6 - - + +
103A THR* 4.4 0.9 - - - +
135A ALA 5.5 0.2 + - - -
137A LEU 3.5 3.2 + - - -
138A ALA* 3.1 34.3 + - - +
139A ASN 3.3 2.5 + - - +
140A LYS* 1.3 77.3 - - - +
142A MET* 1.3 66.6 + - - +
143A VAL 3.2 27.7 + - - +
144A GLU* 4.2 17.6 - - - +
145A TYR* 3.8 15.2 - - - +
161A GLU* 2.6 43.2 + - - -
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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