Contacts of the helix formed by residues 83 - 89 (chain B) in PDB entry 3MX0
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 ASN 83 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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82B VAL* 1.3 75.5 - - - +
84B PHE* 1.3 74.6 + - - +
85B ASP* 2.7 21.9 + - - +
86B GLY* 2.9 11.5 + - - -
87B TYR* 3.0 26.9 + - - +
95B LYS* 4.5 24.9 + - + +
96B GLY* 5.5 0.4 - - - -
137B PHE* 3.2 17.4 - - + +
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Residues in contact with PHE 84 (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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83B ASN* 1.3 78.1 + - - +
85B ASP* 1.3 65.3 + - - +
87B TYR* 2.9 13.1 + + - +
88B SER* 2.6 58.4 + - - -
135B GLU* 4.9 7.6 - - - -
137B PHE* 3.6 33.9 - + + -
155B LYS* 6.0 2.7 - - + -
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Residues in contact with ASP 85 (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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83B ASN* 2.7 15.5 + - - +
84B PHE* 1.3 77.4 - - - +
86B GLY* 1.3 56.8 + - - +
88B SER* 2.8 26.3 + - - -
89B ALA* 3.0 22.9 + - - +
91B ASP* 5.9 1.2 - - - +
94B SER* 5.7 4.0 + - - -
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Residues in contact with GLY 86 (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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82B VAL* 3.8 18.6 - - - -
83B ASN* 2.9 12.3 + - - -
85B ASP* 1.3 78.8 - - - +
87B TYR* 1.3 59.6 - - - +
90B CYS 3.7 0.5 + - - -
91B ASP* 3.3 39.0 + - - -
94B SER* 6.6 0.2 - - - -
95B LYS 5.1 2.5 - - - -
139B ILE* 3.7 10.9 - - - +
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Residues in contact with TYR 87 (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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46B GLY 4.2 5.4 + - - -
47B ASP* 4.8 3.6 - - - -
48B TYR 4.0 9.0 + - - -
82B VAL* 3.9 1.2 - - - +
83B ASN 3.0 21.1 + - - +
84B PHE* 2.9 12.7 + + - +
86B GLY* 1.3 76.5 - - - +
88B SER* 1.3 69.7 + - - +
90B CYS 3.9 2.4 + - - -
137B PHE* 3.1 31.2 - + + -
138B TYR 4.0 1.6 - - - -
139B ILE* 3.8 16.1 - - + +
153B LYS* 3.1 63.6 + - + +
154B LEU 3.6 11.2 - - - -
155B LYS* 3.4 38.2 - - + +
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Residues in contact with SER 88 (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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84B PHE* 2.6 49.2 + - - -
85B ASP* 2.8 12.9 + - - -
87B TYR* 1.3 80.1 - - - +
89B ALA* 1.3 58.5 + - - -
90B CYS* 3.1 8.9 + - - -
153B LYS* 3.6 12.7 + - - +
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Residues in contact with ALA 89 (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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85B ASP* 3.0 20.2 + - - +
88B SER* 1.3 75.8 - - - +
90B CYS* 1.3 70.8 + - - +
91B ASP* 2.9 15.4 + - + +
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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