Contacts of the helix formed by residues 160 - 165 (chain I) in PDB entry 5L08
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 LEU 160 (chain I).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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105I LEU* 3.5 32.8 - - + -
108I ILE* 4.1 15.0 - - + -
143I PHE* 4.1 9.4 - - + -
146I MET* 3.8 35.9 - - + -
152I LEU* 3.8 14.6 - - + -
157I LEU* 3.6 15.7 - - + +
158I ASP 3.0 1.0 - - - -
159I ILE* 1.3 86.4 - - + +
161I LYS* 1.3 62.4 + - - +
162I ARG 3.0 1.2 + - - -
163I VAL* 3.1 17.6 + - + +
164I CYS* 3.0 32.6 + - - -
175I ILE* 4.5 6.3 - - + -
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Residues in contact with LYS 161 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
158I ASP* 3.1 33.5 + - + +
159I ILE* 3.1 1.9 - - - +
160I LEU* 1.3 79.5 - - - +
162I ARG* 1.3 66.5 + - + +
163I VAL 3.1 1.1 - - - -
164I CYS* 3.7 3.1 - - - -
165I ALA* 3.1 27.7 + - - +
172I LEU* 3.9 11.2 - - + -
175I ILE* 3.7 29.2 - - + +
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Residues in contact with ARG 162 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
127I GLU* 2.8 37.3 + - - +
151I ILE* 4.8 10.9 - - - +
159I ILE* 3.2 47.5 + - - +
160I LEU 3.0 1.6 + - - +
161I LYS* 1.3 81.7 - - + +
163I VAL* 1.3 71.0 + - + +
165I ALA* 4.8 2.4 - - - +
166I GLN* 3.0 20.6 + - - +
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Residues in contact with VAL 163 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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120I PHE* 5.2 5.8 - - + -
123I LEU* 3.8 38.5 - - + +
127I GLU* 4.4 20.2 - - + +
146I MET* 6.4 1.3 - - + -
160I LEU* 3.2 20.6 - - + +
162I ARG* 1.3 97.3 - - + +
164I CYS* 1.3 67.1 + - - +
165I ALA 3.2 2.0 - - - -
166I GLN* 3.0 33.5 + - - +
167I ILE* 3.4 11.1 - - - +
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Residues in contact with CYS 164 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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108I ILE* 5.2 11.0 - - - -
120I PHE* 4.8 9.6 - - - -
160I LEU* 3.0 37.1 + - - +
161I LYS* 4.0 1.1 - - - -
163I VAL* 1.3 79.8 - - - +
165I ALA* 1.3 56.3 + - - +
166I GLN 3.0 5.4 - - - -
167I ILE* 3.0 22.6 + - - +
168I ASN 3.1 18.7 + - - +
171I LEU* 4.1 22.3 - - + +
172I LEU* 4.4 3.8 - - + -
175I ILE* 3.7 27.1 - - + -
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Residues in contact with ALA 165 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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161I LYS 3.1 18.6 + - - +
162I ARG* 5.2 1.8 - - - -
163I VAL 3.2 0.2 - - - -
164I CYS* 1.3 76.8 - - - +
166I GLN* 1.3 62.5 + - + +
167I ILE 3.2 1.0 + - - -
168I ASN* 4.5 5.8 + - - -
169I LYS 5.3 0.7 + - - -
172I LEU* 3.8 28.6 - - + +
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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