Contacts of the strand formed by residues 168 - 170 (chain I) in PDB entry 5AYZ
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 VAL 168 (chain I).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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161I ARG* 4.9 0.2 - - - +
164I LEU 6.0 0.7 - - - -
167I LEU* 1.3 69.0 - - - +
169I MET* 1.3 64.2 + - - +
170I VAL* 3.9 1.0 + - + -
188I ALA* 3.8 29.2 - - + +
191I ALA* 5.0 0.9 - - + -
192I ALA* 3.8 28.9 - - + +
196I LEU* 4.4 9.2 - - + -
197I LYS 3.0 9.6 + - - +
198I VAL* 3.3 9.3 - - + +
199I GLU 3.0 24.9 + - - +
32J TYR* 3.9 25.4 - - + -
33J ALA* 4.7 15.5 - - + +
36J VAL* 4.6 9.6 - - + -
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Residues in contact with MET 169 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
160I HIS* 3.7 13.7 - - + -
161I ARG* 3.4 44.2 + - - +
167I LEU* 3.3 7.6 + - + -
168I VAL* 1.3 74.4 - - - +
170I VAL* 1.3 66.1 + - - +
171I LYS* 3.5 30.6 + - + +
174I HIS* 3.5 19.8 - - - -
199I GLU* 3.4 37.9 - - + +
201I GLU* 5.6 4.7 - - + -
220I LEU* 4.7 8.1 - - - -
401I NCN 3.6 21.8 - - - +
33J ALA* 4.9 6.7 - - - +
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Residues in contact with VAL 170 (chain I).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
168I VAL* 4.8 1.3 - - + -
169I MET* 1.3 72.5 - - - +
171I LYS* 1.3 62.1 + - - +
174I HIS* 3.9 10.8 - - + -
175I VAL* 3.9 16.8 - - + -
184I ALA* 3.8 32.1 - - + +
185I VAL* 4.5 2.7 - - - +
188I ALA* 3.5 32.5 - - + -
198I VAL* 4.5 6.1 - - + -
199I GLU 2.8 16.1 + - - +
200I VAL* 3.6 15.3 - - + +
201I GLU* 2.8 30.0 + - - +
36J VAL* 4.4 8.5 - - + -
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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
------------------------------------------------------------
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