Contacts of the strand formed by residues 132 - 136 (chain B) in PDB entry 2KH2
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 GLN 132 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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130B GLU* 4.1 20.3 + - + +
131B VAL* 1.3 76.8 - - - +
133B LEU* 1.3 66.2 + - - +
134B VAL* 4.2 16.4 - - + +
152B ALA 3.6 0.7 - - - +
154B SER* 2.9 61.1 + - - +
237B TYR* 3.2 7.9 - - - +
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Residues in contact with LEU 133 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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132B GLN* 1.3 74.8 - - - +
134B VAL* 1.3 63.8 + - - +
135B GLU* 3.6 10.1 - - - +
151B CYS* 3.9 16.2 - - - -
152B ALA 3.3 2.7 - - - +
153B ALA* 3.6 34.3 - - + -
156B PHE* 3.9 12.6 - - + -
163B MET* 5.6 3.4 - - + -
225B CYS* 3.8 31.6 - - + +
227B ARG* 4.3 14.6 - - + -
237B TYR* 3.5 41.0 + - + +
239B GLY* 3.6 15.8 - - - -
240B GLN* 3.8 5.0 + - - +
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Residues in contact with VAL 134 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
132B GLN* 4.4 19.7 - - + +
133B LEU* 1.3 77.3 - - - +
135B GLU* 1.3 70.6 + - - +
136B SER* 4.3 8.1 + - - +
150B SER 4.0 0.9 - - - +
151B CYS* 3.7 0.3 - - - -
152B ALA* 2.9 43.5 + - + +
154B SER* 5.8 1.1 - - - +
240B GLN* 5.2 12.3 - - + +
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Residues in contact with GLU 135 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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133B LEU 3.6 3.2 - - - +
134B VAL* 1.3 77.1 - - - +
136B SER* 1.3 68.5 + - - +
149B LEU* 6.3 0.4 - - + -
150B SER 3.2 10.3 - - - +
151B CYS* 3.9 9.4 - - + +
165B TRP* 4.7 6.1 - - + -
223B TYR 4.4 2.0 - - - +
224B TYR* 3.4 1.4 - - - -
225B CYS* 2.7 45.4 + - + +
239B GLY* 3.2 10.4 - - - -
240B GLN* 2.8 24.8 + - - +
241B GLY* 3.0 25.6 + - - +
242B THR* 3.1 27.7 - - + +
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Residues in contact with SER 136 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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134B VAL* 4.3 10.6 + - - +
135B GLU* 1.3 81.7 + - - +
137B GLY* 1.3 61.7 + - - +
138B GLY 3.5 2.9 + - - -
149B LEU* 3.7 5.9 - - - +
150B SER* 2.7 36.5 + - - -
242B THR* 3.7 9.7 + - - +
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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