Contacts of the strand formed by residues 134 - 138 (chain B) in PDB entry 2P2B
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 VAL 134 (chain B).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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132B GLY 3.6 5.3 + - - +
133B ASP* 1.3 73.7 - - - +
135B VAL* 1.3 64.2 + - - +
158B VAL* 3.2 17.5 - - + +
160B SER* 4.0 15.7 - - - -
178B SER* 3.5 34.5 - - - +
179B SER 4.5 1.7 + - - +
180B SER* 3.4 22.8 - - - +
181B ARG* 2.8 36.8 + - - +
261B ILE* 4.1 21.8 - - + -
478B PHE* 4.6 9.2 - - + -
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Residues in contact with VAL 135 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
124B LEU* 5.1 0.9 - - + -
129B ILE* 3.8 29.6 - - + -
134B VAL* 1.3 79.0 - - - +
136B ALA* 1.3 67.0 + - - +
137B ILE* 3.7 2.4 + - + -
152B CYS* 3.7 26.7 - - - -
157B ALA* 4.2 5.8 - - + -
158B VAL 3.0 7.5 + - - +
159B HIS* 3.4 4.9 - - - +
160B SER 2.9 22.8 + - - -
182B LEU* 3.8 26.2 - - + -
184B ILE* 3.7 31.0 - - + -
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Residues in contact with ALA 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 VAL* 1.3 73.4 - - - +
137B ILE* 1.3 61.8 + - - +
138B TYR* 4.1 0.7 - - + -
160B SER* 3.4 7.9 - - - +
162B ILE* 4.1 23.3 - - + -
175B ILE* 4.4 3.4 - - + -
180B SER* 3.5 23.8 + - - +
182B LEU 2.8 16.1 + - - +
183B VAL* 3.3 17.4 - - + -
184B ILE 2.8 26.7 + - - -
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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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135B VAL* 4.0 14.6 - - + +
136B ALA* 1.3 76.7 - - - +
138B TYR* 1.3 57.4 + - - +
139B MET* 3.5 30.7 - - + -
145B ALA* 4.7 6.3 - - + +
148B ALA* 3.8 15.3 - - + +
149B MET* 3.7 38.8 - - + +
152B CYS* 4.4 3.4 - - - -
159B HIS* 3.8 19.5 - - + -
160B SER 3.0 6.7 + - - -
161B VAL* 3.4 21.5 - - + +
162B ILE* 2.6 34.0 + - - +
184B ILE* 3.6 10.1 - - + +
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Residues in contact with TYR 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 ALA 4.1 0.4 - - - -
137B ILE* 1.3 72.5 - - - +
139B MET* 1.3 58.7 + - - +
162B ILE* 3.5 30.3 - - + -
163B PHE 3.5 18.4 - - - -
164B GLY* 3.3 15.5 + - - -
166B PHE 2.7 22.7 + - - -
171B VAL* 3.5 23.3 - - + +
183B VAL* 4.6 6.3 - - + -
184B ILE 2.8 12.8 + - - +
185B THR* 2.7 37.0 + - - +
198B LEU* 3.3 38.5 - - + +
201B ASN* 3.1 23.6 + - + +
202B VAL* 3.5 25.4 - - + -
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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