Contacts of the strand formed by residues 178 - 181 (chain B) in PDB entry 4R95
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 GLY 178 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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89B ASN 3.5 4.0 + - - -
90B ILE* 3.5 15.9 - - - +
91B LEU 3.0 20.4 + - - -
100B ALA 3.2 13.0 - - - -
101B VAL* 3.8 2.2 - - - -
169B PHE* 5.0 0.9 - - - -
170B PHE* 4.8 2.7 - - - -
176B TRP* 3.3 15.9 - - - -
177B GLU* 1.3 78.9 - - - +
179B ILE* 1.3 64.3 + - - +
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Residues in contact with ILE 179 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
90B ILE* 3.4 6.0 - - - +
91B LEU* 3.5 28.5 - - + +
93B ASP* 3.7 20.9 - - + +
96B SER* 3.9 10.3 - - - +
98B ASN* 4.0 11.9 - - + +
99B PHE* 3.4 8.1 - - - -
100B ALA* 2.8 41.1 + - + +
137B TRP* 4.8 8.7 - - - +
169B PHE* 3.7 36.6 - - + -
176B TRP* 4.0 9.2 - - + -
178B GLY* 1.3 78.2 - - - +
180B LEU* 1.3 60.7 + - - +
181B GLY 4.7 0.2 - - - +
502B 3KW 4.1 17.7 - - + -
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Residues in contact with LEU 180 (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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77B VAL* 5.0 2.7 - - + -
79B MET* 4.1 20.9 - - + -
90B ILE* 3.4 13.2 - - + +
91B LEU 2.8 14.3 + - - +
92B VAL* 4.7 3.1 - - + -
93B ASP* 3.0 26.0 + - - -
98B ASN 4.3 0.2 - - - -
99B PHE* 3.8 20.4 - - + -
148B ILE* 5.1 2.0 - - + -
179B ILE* 1.3 72.0 - - - +
181B GLY* 1.3 61.4 + - - +
182B LEU* 3.2 33.4 + - + +
197B PHE* 3.6 44.0 - - + -
235B MET* 4.7 17.7 - - + -
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Residues in contact with GLY 181 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
93B ASP 3.5 0.7 - - - -
96B SER* 3.1 34.7 + - - -
97B SER* 3.6 14.6 - - - +
98B ASN 3.0 25.0 + - - -
179B ILE 3.8 0.4 - - - -
180B LEU* 1.3 72.2 - - - +
182B LEU* 1.3 60.1 + - - +
183B ALA 3.5 2.0 - - - +
196B PRO* 4.5 6.1 - - - +
197B PHE* 4.6 6.4 + - - +
198B PHE 5.2 1.2 + - - -
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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