Contacts of the helix formed by residues 80 - 84 (chain A) in PDB entry 6A08
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 TYR 80 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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24A PHE* 5.0 4.5 - + - -
79A ALA* 1.3 83.8 - - + +
81A GLN* 1.3 60.8 + - - +
82A ARG 3.1 3.6 - - - -
83A LEU* 3.0 42.2 + - + +
84A PHE* 4.1 1.0 - - - -
89A GLU* 3.7 4.6 + - - -
108A LEU* 3.1 44.3 + - + +
110A SER* 3.6 8.1 - - - -
173A LEU* 3.5 37.3 - - + +
177A VAL* 3.7 19.5 - - + -
178A THR 3.9 5.8 - - - -
179A ALA* 3.8 27.2 - - - +
404A 173 3.7 28.9 - + - -
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Residues in contact with GLN 81 (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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75A VAL* 5.5 0.2 - - - +
76A ALA 4.8 2.8 + - - -
78A VAL* 2.8 35.3 + - - +
79A ALA 4.4 1.1 - - - +
80A TYR* 1.3 68.7 - - - +
82A ARG* 1.3 57.1 + - - +
83A LEU 3.0 5.2 - - - -
84A PHE* 3.0 26.9 + - - +
85A HIS 3.6 6.6 + - - -
88A GLY* 3.6 8.7 - - - -
89A GLU* 3.0 32.6 + - - +
92A VAL* 3.4 20.8 - - - +
103A TYR* 2.8 32.7 + - - -
104A THR 5.0 0.6 + - - -
106A CYS* 4.9 3.4 - - - -
310A MET* 3.6 30.6 - - - +
313A LEU* 3.7 7.1 - - + +
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Residues in contact with ARG 82 (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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81A GLN* 1.3 71.7 - - - +
83A LEU* 1.3 63.6 + - - +
84A PHE 3.0 2.9 + - - -
85A HIS 3.3 17.7 + - - +
86A PRO* 3.0 42.4 + - - +
87A GLU 5.2 0.4 - - - -
88A GLY* 3.8 9.4 - - - +
89A GLU* 4.7 0.4 - - - +
110A SER* 3.0 38.9 + - - +
111A VAL* 4.1 11.7 - - - -
176A TRP* 2.8 55.6 + - - +
177A VAL* 4.3 9.5 - - + +
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Residues in contact with LEU 83 (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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17A LEU* 4.3 3.1 - - - +
21A ILE* 3.6 37.3 - - + +
24A PHE* 3.6 37.9 - - + -
80A TYR* 3.0 32.0 + - + +
82A ARG* 1.3 80.1 - - - +
84A PHE* 1.3 70.2 + - + +
171A PHE* 4.2 9.4 - - + -
173A LEU* 4.2 10.5 - - + -
174A PRO* 3.5 36.8 - - + -
176A TRP* 5.3 2.2 + - - +
177A VAL* 4.0 10.6 - - + +
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Residues in contact with PHE 84 (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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17A LEU* 3.9 20.3 - - + +
21A ILE* 3.8 28.0 - - + -
24A PHE* 4.4 16.4 - + - -
25A LEU* 3.9 35.2 - - + -
78A VAL* 4.1 9.0 - - + -
79A ALA 4.3 0.9 - - - -
80A TYR 4.1 11.0 - - - -
81A GLN* 3.0 16.4 + - - +
83A LEU* 1.3 86.7 - - + +
85A HIS* 1.3 62.6 + - - +
310A MET* 3.6 37.2 - - + +
313A LEU* 4.0 10.5 - - + -
314A ALA* 3.3 30.7 - - + +
402A FMN 4.5 4.0 - - + -
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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