Contacts of the strand formed by residues 54 - 58 (chain I) in PDB entry 5A31
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 ARG 54 (chain I).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
19I LEU* 3.8 19.8 - - - +
20I PRO* 4.5 16.6 - - - +
37I LEU* 4.8 1.2 - - - +
45I LEU* 2.8 42.2 - - - +
46I LEU 4.6 1.8 - - - +
47I HIS* 3.0 58.5 + - + +
52I PHE 3.4 3.6 + - - -
53I HIS* 1.3 96.9 - - + +
55I VAL* 1.3 64.6 + - - +
56I TRP* 4.7 6.5 - - - +
57I SER* 5.0 6.3 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with VAL 55 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
46I LEU* 2.5 29.5 + - + +
47I HIS 3.6 4.0 - - - -
48I ARG* 3.2 66.5 + - + +
53I HIS 3.3 0.2 + - - -
54I ARG* 1.3 74.7 - - - +
56I TRP* 1.3 74.7 + - + +
389N PRO* 5.1 5.2 - - + -
390N GLY* 4.3 13.0 - - - +
431N ARG* 5.7 1.3 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with TRP 56 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
44I VAL* 3.6 15.5 - - + -
45I LEU* 3.5 5.2 - - - +
46I LEU* 2.9 72.2 + - + +
54I ARG* 4.8 5.7 - - - -
55I VAL* 1.3 88.4 - - + +
57I SER* 1.3 68.9 + - - +
58I PHE* 3.5 26.7 - + + -
80I LEU* 4.8 9.0 - - + -
82I PHE* 5.6 2.2 - + - -
93I CYS* 3.9 24.5 - - + -
95I VAL* 3.4 33.0 + - + -
96I GLU 5.0 4.5 - - - -
98I PRO* 3.0 42.8 - - + -
389N PRO* 5.9 0.9 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with SER 57 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
43I GLU* 5.0 3.8 - - - -
45I LEU* 3.5 27.4 - - - -
54I ARG* 5.0 4.9 - - - -
56I TRP* 1.3 80.5 - - - +
58I PHE* 1.3 60.5 + - - +
59I PRO* 3.9 7.5 - - - +
98I PRO* 4.0 14.4 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with PHE 58 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
43I GLU* 3.0 24.2 - - - +
44I VAL* 3.0 34.5 + - + +
45I LEU* 4.3 0.6 - - - +
56I TRP* 3.5 14.1 - + + -
57I SER* 1.3 70.9 - - - +
59I PRO* 1.3 82.1 - - + +
60I PRO* 4.9 0.4 - - + -
61I ASN* 5.4 4.0 - - - -
64I THR* 4.1 28.7 - - + -
82I PHE* 3.8 33.4 - + - -
93I CYS* 4.2 4.5 - - - -
98I PRO 3.2 28.9 - - - -
99I GLU* 3.9 3.4 - - - -
100I SER* 3.8 27.6 - - - -
----------------------------------------------------------
Back to top of page
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
------------------------------------------------------------
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) + - + + + + + -
------------------------------------------------------------
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