Contacts of the helix formed by residues 115 - 120 (chain A) in PDB entry 5T4S
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 PRO 115 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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55A TYR* 4.3 10.7 - - + -
86A GLY* 6.0 0.2 - - - -
87A THR* 3.1 32.1 - - - +
113A GLU 3.9 2.0 - - - +
114A MET* 1.4 84.9 - - - +
116A ALA* 1.3 65.2 + - - +
117A LEU 3.4 17.9 + - - +
118A PRO* 5.1 0.7 - - + -
119A PHE* 3.0 36.0 + - + +
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Residues in contact with ALA 116 (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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55A TYR* 5.4 1.4 - - - -
56A THR* 4.9 14.1 - - - +
57A ALA* 4.6 4.2 - - - +
114A MET 3.6 3.3 + - - -
115A PRO* 1.3 70.2 - - - +
117A LEU* 1.3 63.5 + - + +
118A PRO 3.3 1.0 - - - -
119A PHE 3.1 0.7 + - - -
120A MET* 2.7 55.1 + - + +
121A LEU 4.4 0.2 + - - -
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Residues in contact with LEU 117 (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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115A PRO* 3.4 17.4 - - - +
116A ALA* 1.3 82.3 - - + +
118A PRO* 1.3 62.6 - - + +
119A PHE 3.6 0.2 - - - -
120A MET* 5.6 2.5 - - + -
121A LEU* 4.8 15.7 - - + -
402A PG6 4.7 23.6 - - - +
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Residues in contact with PRO 118 (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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85A THR 3.3 29.4 - - - +
86A GLY* 4.1 5.2 - - - -
115A PRO* 4.7 2.0 - - + -
116A ALA 3.3 2.9 - - - -
117A LEU* 1.3 83.6 - - + +
119A PHE* 1.3 75.5 + - + +
120A MET 3.2 2.9 - - - -
121A LEU* 2.8 36.4 + - + +
122A ALA 3.7 2.1 + - - -
402A PG6 3.6 52.9 - - - +
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Residues in contact with PHE 119 (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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45A TRP* 3.6 25.1 - + - -
57A ALA* 3.9 4.5 - - + -
61A HIS* 2.9 28.7 - - - -
83A TYR* 5.1 2.2 - + - -
86A GLY 4.7 3.1 - - - -
87A THR 3.6 21.3 - - - -
88A VAL* 3.5 24.7 - - + -
114A MET* 3.7 34.5 - - + -
115A PRO* 3.0 35.5 + - + +
116A ALA 3.1 0.2 + - - -
118A PRO* 1.3 91.5 - - + +
120A MET* 1.3 59.5 + - - +
121A LEU 3.1 0.2 - - - -
122A ALA* 3.3 15.2 + - + +
124A PHE* 4.8 2.7 - + - -
402A PG6 3.8 34.1 - - - -
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Residues in contact with MET 120 (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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56A THR* 3.8 17.7 - - + +
57A ALA* 3.8 25.1 - - - +
60A TYR* 3.6 45.0 - - + +
61A HIS* 4.9 2.2 - - - -
116A ALA* 2.7 42.6 + - + +
117A LEU* 5.6 2.9 - - + -
119A PHE* 1.3 72.3 - - - +
121A LEU* 1.3 64.7 + - + +
122A ALA 3.3 6.1 + - - +
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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