Contacts of the helix formed by residues 85 - 89 (chain C) in PDB entry 1KR2
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 TRP 85 (chain C).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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83C ASP* 2.9 19.9 + - - +
84C THR* 1.3 79.3 + - - +
86C GLU* 1.3 81.3 + - + +
88C LEU* 3.1 14.0 + - + +
89C GLN* 3.1 45.3 + - + +
93C LYS* 3.7 35.0 - - + -
97C LYS* 4.6 5.6 - - + -
98C VAL* 4.0 22.4 - - + -
101C HIS* 3.2 63.1 + + + +
102C HIS* 4.9 1.3 - - - +
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Residues in contact with GLU 86 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
14C CYS* 3.4 19.6 - - - +
49C SER* 2.6 37.9 + - - +
50C PRO 3.5 11.7 - - - +
51C VAL* 4.0 21.6 - - - +
52C GLY* 3.6 12.0 + - - +
83C ASP 5.6 0.2 - - - +
84C THR 3.3 0.8 - - - -
85C TRP* 1.3 84.1 - - + +
87C SER* 1.3 63.6 + - - +
89C GLN* 3.1 23.7 + - - +
92C TRP* 4.9 0.5 + - - -
93C LYS* 4.2 11.7 + - + +
95C THR* 5.8 0.3 - - - -
98C VAL* 3.3 35.6 - - + +
811C TAD 4.3 6.8 + - - -
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Residues in contact with SER 87 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
50C PRO* 3.4 15.0 + - - -
52C GLY* 3.9 17.7 - - - -
53C ASP 4.8 0.9 + - - -
63C ALA* 4.2 18.5 - - - +
67C VAL* 3.6 27.3 - - - +
84C THR* 2.6 36.2 + - - -
86C GLU* 1.3 79.4 - - - +
88C LEU* 1.3 67.1 + - - +
89C GLN 3.4 1.8 + - - +
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Residues in contact with LEU 88 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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84C THR* 3.1 29.1 + - - +
85C TRP* 3.6 11.0 - - - +
86C GLU 3.1 1.2 - - - -
87C SER* 1.3 86.2 - - - +
89C GLN* 1.3 66.0 + - - +
90C LYS* 3.5 8.3 + - - +
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Residues in contact with GLN 89 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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52C GLY* 4.9 5.5 - - - -
53C ASP 5.3 0.3 + - - -
54C ALA* 4.4 8.0 + - - +
85C TRP* 3.1 62.2 + - + +
86C GLU* 3.1 20.9 + - - +
87C SER 3.4 3.1 - - - +
88C LEU* 1.3 80.7 + - - +
90C LYS* 1.3 64.1 + - - +
91C GLU 3.4 20.5 + - - +
92C TRP* 4.8 1.0 + - - -
93C LYS* 3.7 32.9 + - + +
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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