Contacts of the strand formed by residues 93 - 96 (chain A) in PDB entry 1W4R
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 93 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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40A VAL* 4.5 12.1 - - + -
43A PHE* 3.8 47.8 - - + -
48A TYR* 4.1 14.6 - - + -
49A LYS 3.2 2.4 + - - -
50A CYS* 3.2 19.3 - - - +
51A LEU 2.9 26.0 + - - +
91A VAL* 3.5 3.7 - - - +
92A ALA* 1.3 85.6 - - + +
94A ILE* 1.3 64.1 + - - +
118A THR* 3.4 15.9 - - - +
120A ILE* 4.2 15.5 - - + -
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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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51A LEU* 3.3 7.9 - - + +
53A ILE* 3.8 28.7 - - + -
88A ALA* 3.7 24.0 - - + +
91A VAL* 3.6 16.4 - - + -
93A VAL* 1.3 81.9 - - - +
95A GLY* 1.3 64.6 + - - +
96A ILE* 4.2 6.1 - - + -
108A PHE* 4.1 10.3 - - + -
112A MET* 3.7 37.0 - - + -
117A LYS* 4.1 12.3 - - + -
118A THR 2.9 9.5 + - - +
119A VAL* 3.3 7.7 - - + +
120A ILE* 2.8 26.5 + - - +
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Residues in contact with GLY 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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36A LEU* 3.8 13.5 - - - -
40A VAL* 4.2 13.5 - - - +
51A LEU 2.8 10.9 + - - +
52A VAL* 3.3 9.0 - - - -
53A ILE* 2.9 27.1 + - - +
93A VAL 4.2 0.2 - - - -
94A ILE* 1.3 75.6 - - - +
96A ILE* 1.3 63.3 + - - +
97A ASP 4.2 0.4 - - - -
120A ILE 3.2 7.6 - - - -
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Residues in contact with ILE 96 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
36A LEU* 3.6 4.9 - - - +
53A ILE* 3.5 12.3 - - + +
81A LEU* 4.1 7.2 - - + -
94A ILE* 4.2 9.0 - - + -
95A GLY* 1.3 79.0 - - - +
97A ASP* 1.3 57.1 + - - +
99A GLY* 4.0 12.8 - - - -
102A PHE* 3.9 31.9 - - + -
105A ILE* 4.0 8.5 - - + -
108A PHE* 3.9 23.6 - - + -
109A CYS* 3.8 28.7 - - - -
119A VAL* 3.9 9.2 - - + -
120A ILE 2.8 11.7 + - - +
121A VAL* 3.4 5.8 - - + -
122A ALA 2.8 33.4 + - - +
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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