Contacts of the helix formed by residues 88 - 95 (chain A) in PDB entry 1BWN
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 GLU 88 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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87A SER* 1.4 74.2 - - - +
89A MET* 1.3 66.5 + - + +
91A GLN* 3.2 19.0 + - - +
92A ILE* 3.9 1.9 + - - +
6B LEU* 4.5 14.4 - - + -
7B GLU 4.1 24.4 - - - +
8B SER* 4.3 8.7 + - - +
120B LEU* 4.8 8.2 - - + +
123B ARG* 2.6 37.8 - - - +
124B TRP* 5.4 0.4 - - - +
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Residues in contact with MET 89 (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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87A SER 4.7 6.1 - - - +
88A GLU* 1.3 76.8 - - + +
90A GLU* 1.3 55.5 - - - +
92A ILE* 2.2 55.0 + - + -
93A SER* 2.7 24.8 + - - +
96A GLU* 5.9 1.1 - - - +
97A ARG* 5.9 1.8 - - - +
7B GLU* 4.9 11.9 + - + +
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Residues in contact with GLU 90 (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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87A SER* 2.7 31.5 + - - +
89A MET* 1.3 75.2 - - - +
91A GLN* 1.3 62.5 + - - +
92A ILE 2.9 0.5 + - - -
93A SER* 3.1 21.0 + - - -
94A ILE* 3.1 40.0 + - + +
117A THR* 5.0 8.4 - - - +
90B GLU* 4.9 11.2 - - - +
94B ILE* 5.8 4.0 - - + -
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Residues in contact with GLN 91 (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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87A SER 3.6 1.6 + - - +
88A GLU 3.2 10.5 + - - +
89A MET 2.7 2.6 + - - -
90A GLU* 1.3 77.4 - - - +
92A ILE* 1.3 64.6 + - - +
94A ILE* 3.5 14.8 - - - +
95A ILE* 3.9 10.2 - - - +
8B SER* 3.7 9.9 - - - -
9B ILE* 2.9 56.8 + - - +
94B ILE* 3.0 58.0 + - + +
95B ILE* 4.3 6.9 - - + +
116B PRO* 3.6 11.1 - - - +
120B LEU* 4.4 11.6 - - + +
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Residues in contact with ILE 92 (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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88A GLU 4.8 0.9 - - - +
89A MET* 2.2 41.0 + - + +
91A GLN* 1.3 76.7 - - - +
93A SER* 1.3 64.1 + - - +
94A ILE 3.1 2.5 - - - -
95A ILE* 3.0 16.7 + - - +
96A GLU* 3.1 37.7 + - + +
7B GLU* 3.9 34.3 - - + +
8B SER* 4.2 3.4 - - - -
9B ILE* 3.6 21.5 - - + -
29B LEU* 3.8 28.3 - - + -
42B TYR* 4.6 4.7 - - + +
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Residues in contact with SER 93 (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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89A MET* 2.7 21.6 + - - +
90A GLU* 3.1 28.1 + - - -
92A ILE* 1.3 68.8 - - - +
94A ILE* 1.3 59.6 + - - +
95A ILE 2.9 5.4 - - - -
96A GLU* 2.9 6.7 + - - +
97A ARG* 2.5 71.7 + - - +
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Residues in contact with ILE 94 (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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90A GLU* 3.2 34.8 - - + +
91A GLN* 3.5 14.8 - - - +
92A ILE 3.1 0.2 - - - -
93A SER* 1.3 79.2 + - - +
95A ILE* 1.3 59.1 + - + +
98A PHE* 4.1 2.1 - - - -
116A PRO* 3.6 29.8 - - + +
117A THR* 4.3 14.1 - - + -
120A LEU* 5.2 2.5 - - + -
90B GLU* 3.8 22.9 - - - +
91B GLN* 3.0 58.7 + - + +
94B ILE* 4.9 4.0 - - + -
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Residues in contact with ILE 95 (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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9A ILE* 4.4 11.0 - - + -
27A LYS* 2.5 31.4 + - - +
44A PHE* 4.9 1.3 - - + -
91A GLN 3.9 7.0 - - - +
92A ILE* 3.2 13.2 - - - +
93A SER 2.9 0.4 - - - -
94A ILE* 1.3 90.2 - - + +
96A GLU* 1.3 51.0 + - - +
98A PHE* 3.4 16.2 - - + -
9B ILE* 4.2 9.6 - - + -
42B TYR* 3.9 31.9 - - + +
44B PHE* 4.4 11.7 - - + -
91B GLN* 4.2 16.6 - - + +
95B ILE* 4.2 41.3 - - + -
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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