Contacts of the strand formed by residues 26 - 31 (chain I) in PDB entry 5A15
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 26 (chain I).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
66H ALA* 3.9 16.4 - - + -
67H LYS 3.8 22.2 + - - +
68H ASP* 4.6 8.9 - - - -
74H PHE* 3.4 58.6 - - + -
24I PRO* 3.6 16.4 - - - +
25I GLU* 1.3 82.6 - - + +
27I VAL* 1.3 63.7 + - - +
28I GLU* 3.9 1.6 + - - +
37I PHE* 4.2 16.7 - - + -
38I THR 3.6 2.7 - - - +
39I ARG* 4.4 1.1 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with VAL 27 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
23I PHE* 5.2 1.6 - - + -
24I PRO* 3.9 15.9 - - + +
26I VAL* 1.3 76.5 - - - +
28I GLU* 1.3 67.2 + - - +
29I LEU* 3.8 8.1 + - + -
36I TYR 3.8 0.3 - - - +
37I PHE* 3.3 6.5 - - - +
38I THR* 2.6 39.5 + - + +
40I HIS* 3.8 38.6 - - + -
43I LEU* 3.9 22.4 - - + -
55I PHE* 4.2 5.8 - - + -
73I PHE* 3.9 28.0 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 28 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
69H SER* 4.4 13.4 + - - -
24I PRO* 5.9 0.2 - - - +
26I VAL 3.9 2.3 + - - +
27I VAL* 1.3 73.9 - - - +
29I LEU* 1.3 60.9 + - - +
35I VAL* 4.5 1.9 - - + +
36I TYR 3.8 1.8 - - - -
37I PHE* 3.1 43.2 - - + -
72I ARG* 3.2 46.7 + - + +
73I PHE* 3.4 28.9 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 29 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
27I VAL* 4.3 11.2 - - + +
28I GLU* 1.3 74.2 - - - +
30I ASN* 1.3 60.0 + - - +
31I VAL* 4.0 7.6 - - + -
35I VAL* 3.3 10.7 - - - +
36I TYR* 2.6 47.2 + - + +
38I THR* 4.2 11.9 - - + -
43I LEU* 4.0 20.4 - - + -
51I LEU* 5.8 0.9 - - + -
55I PHE* 3.7 29.2 - - + -
72I ARG* 4.5 1.8 - - - -
73I PHE* 3.6 17.3 - - + +
75I ILE* 4.4 12.8 - - + -
82I PHE* 3.9 30.7 - - + -
86I LEU* 5.4 0.2 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with ASN 30 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
29I LEU* 1.3 71.9 - - - +
31I VAL* 1.3 61.0 + - - +
33I GLY* 3.0 31.0 + - - -
34I GLN 3.7 2.7 - - - -
35I VAL* 4.5 4.7 - - + +
68I ASP* 2.8 37.7 + - - +
72I ARG* 4.0 18.3 - - + +
73I PHE 2.8 15.0 + - - +
74I PHE* 3.1 16.0 - - + -
75I ILE 2.9 24.1 + - - -
37J PHE* 3.8 20.4 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with VAL 31 (chain I).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
29I LEU* 4.4 7.9 - - + -
30I ASN* 1.3 75.1 + - - +
32I GLY* 1.3 58.8 + - - +
33I GLY 3.0 2.9 - - - -
34I GLN* 2.8 30.4 + - - +
36I TYR* 4.0 7.9 - - + -
75I ILE* 3.4 27.1 - - + +
77I ARG* 3.5 21.1 - - + +
78I ASP 3.9 4.7 - - - +
79I GLY* 3.0 16.3 - - - -
82I PHE* 3.7 54.7 - - + -
----------------------------------------------------------
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