Contacts of the strand formed by residues 135 - 138 (chain B) in PDB entry 3K4H
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 ALA 135 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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134B ILE* 1.3 75.8 - - - +
136B PHE* 1.3 58.5 - - - +
153B MSE 3.9 5.0 - - - +
164B LEU* 5.8 0.2 - - - -
168B TYR* 3.2 28.0 - - + +
186B LEU* 3.6 30.5 - - + -
193B PRO* 4.2 4.7 - - + +
195B ALA 3.3 8.1 + - - -
196B ILE* 3.4 8.6 - - + -
197B MSE 2.7 31.5 + - - -
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Residues in contact with PHE 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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135B ALA* 1.3 75.6 - - - +
137B ILE* 1.3 66.0 + - - +
138B GLY 3.6 10.8 - - - -
146B THR* 3.8 16.2 - - + -
149B ARG 4.4 0.2 - - - -
150B LEU* 3.6 50.5 - - + -
153B MSE 4.0 14.6 - - - -
164B LEU* 5.7 1.6 - - + -
168B TYR 2.6 14.2 + - - +
169B ILE* 4.5 10.5 - - + -
170B LEU* 2.8 32.2 + - - +
171B HIS* 3.4 28.3 - + - -
197B MSE 3.3 27.6 - - + -
199B THR* 3.6 27.8 - - + -
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Residues in contact with ILE 137 (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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136B PHE* 1.3 83.5 - - - +
138B GLY* 1.3 63.6 + - - +
170B LEU* 3.9 13.2 - - + -
172B PHE* 3.3 35.7 - - + -
178B SER* 5.0 1.3 - - - +
182B ALA* 3.7 18.4 - - + -
183B VAL* 5.7 0.2 - - + -
186B LEU* 5.0 3.6 - - + -
196B ILE* 4.5 22.9 - - + -
197B MSE 3.0 9.6 + - - +
198B ALA* 3.5 4.3 - - + +
199B THR* 3.2 27.0 + - - +
203B ILE* 3.9 21.4 - - + +
207B VAL* 3.7 29.4 - - + -
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Residues in contact with GLY 138 (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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136B PHE* 3.6 15.5 - - - -
137B ILE* 1.3 76.5 - - - +
139B GLY* 1.3 67.0 + - - +
146B THR* 3.9 2.5 - - - -
170B LEU 3.1 11.3 + - - -
171B HIS* 3.3 2.1 - - - -
172B PHE* 2.9 28.6 + - - -
199B THR* 3.8 10.5 - - - -
203B ILE* 4.1 5.9 - - - +
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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