Contacts of the helix formed by residues 43 - 52 (chain F) in PDB entry 2ZNZ
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 PRO 43 (chain F).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
41F LYS 3.6 7.6 - - - +
42F ALA* 1.3 86.2 - - + +
44F LEU* 1.3 65.3 + - - +
45F ARG* 4.2 11.9 - - + +
46F GLU* 2.9 42.4 + - + +
47F ILE* 3.0 11.7 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 44 (chain F).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
42F ALA 3.7 2.0 + - - -
43F PRO* 1.3 71.1 - - - +
45F ARG* 1.3 53.5 + - - +
47F ILE* 3.3 8.6 + - + +
48F SER* 2.8 36.9 + - - -
55F GLU* 3.7 36.4 - - + +
58F ILE* 3.7 27.9 - - + +
59F HIS* 3.8 37.7 - - + +
62F ILE* 4.2 10.5 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with ARG 45 (chain F).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
43F PRO* 4.2 8.7 - - + +
44F LEU* 1.3 79.2 - - - +
46F GLU* 1.3 57.4 + - - +
48F SER* 3.4 4.4 - - - -
49F LYS* 2.9 66.5 + - + +
55F GLU* 3.4 26.2 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 46 (chain F).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
35F ILE* 5.5 2.0 - - - +
42F ALA* 4.7 9.8 - - + +
43F PRO* 2.9 36.0 + - + +
45F ARG* 1.3 78.1 - - - +
47F ILE* 1.3 60.9 + - + +
49F LYS* 3.3 6.2 + - - +
50F ILE* 2.9 54.9 + - + +
----------------------------------------------------------
Back to top of page
Residues in contact with ILE 47 (chain F).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
32F ILE* 4.2 14.4 - - + -
35F ILE* 3.9 34.8 - - + -
36F LEU* 4.1 23.1 - - + -
42F ALA* 3.7 22.4 - - + +
43F PRO 3.0 11.1 + - - +
44F LEU* 3.8 7.4 - - + +
46F GLU* 1.3 74.6 - - + +
48F SER* 1.3 54.1 + - - +
50F ILE* 3.8 4.8 - - - +
51F THR* 2.8 41.9 + - + +
58F ILE* 3.6 38.4 - - + -
62F ILE* 4.4 5.8 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with SER 48 (chain F).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
44F LEU 2.8 21.3 + - - -
45F ARG* 3.4 8.5 - - - -
47F ILE* 1.3 72.6 - - - +
49F LYS* 1.3 65.0 + - - +
51F THR* 4.1 4.3 - - - -
52F GLY* 2.9 25.1 + - - -
53F LEU 2.5 31.4 + - - +
54F ALA* 4.3 0.7 - - - -
55F GLU* 3.9 22.1 + - - +
58F ILE* 4.3 3.2 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LYS 49 (chain F).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
45F ARG* 2.9 63.8 + - - +
46F GLU* 3.3 6.5 + - - +
48F SER* 1.3 80.2 - - - +
50F ILE* 1.3 66.5 + - + +
52F GLY* 3.9 5.5 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with ILE 50 (chain F).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
31F LYS* 3.8 31.2 - - - +
35F ILE* 3.8 26.2 - - + -
46F GLU* 2.9 47.7 + - + +
47F ILE 3.8 3.1 - - - +
49F LYS* 1.3 79.4 - - + +
51F THR* 1.3 62.1 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with THR 51 (chain F).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
28F ILE* 5.1 7.3 + - - +
31F LYS* 4.3 24.9 - - - +
32F ILE* 5.1 3.3 - - - +
47F ILE* 2.8 33.5 + - + +
48F SER* 4.1 0.2 - - - -
50F ILE* 1.3 75.8 - - - +
52F GLY* 1.3 62.1 + - - +
53F LEU* 3.4 29.2 - - + +
58F ILE* 3.4 28.9 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with GLY 52 (chain F).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
48F SER 2.9 10.7 + - - -
49F LYS 3.9 4.2 + - - -
50F ILE 3.5 2.6 + - - -
51F THR* 1.3 79.2 - - - +
53F LEU* 1.3 65.8 + - - +
----------------------------------------------------------
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