Contacts of the helix formed by residues 64 - 71 (chain C) in PDB entry 1Q0K
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 LYS 64 (chain C).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
83B LYS* 4.2 11.0 - - - +
61C ASP 3.2 10.7 + - - +
62C TYR 3.1 18.2 + - - +
63C PHE* 1.3 78.9 - - - +
65C PRO* 1.3 79.6 - - + +
66C PRO* 3.2 11.7 - - + -
67C HIS* 2.8 35.8 + - + +
68C PHE* 3.4 9.5 - - - -
9003C SO4 3.1 32.5 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with PRO 65 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
79B ASN* 5.6 1.6 - - - +
80B GLU* 5.9 7.0 - - + +
83B LYS* 4.1 19.5 - - + -
64C LYS* 1.3 90.1 - - + +
66C PRO* 1.3 69.2 - - + +
68C PHE* 3.2 22.2 + - + +
69C GLU* 3.2 18.9 + - + +
----------------------------------------------------------
Back to top of page
Residues in contact with PRO 66 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
64C LYS* 3.2 13.2 - - + -
65C PRO* 1.3 98.7 - - + +
67C HIS* 1.3 55.7 + - + +
69C GLU* 3.0 10.7 + - + +
70C SER* 2.7 41.9 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with HIS 67 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
62C TYR* 4.2 11.4 + + - -
63C PHE* 3.4 29.7 - + + -
64C LYS* 2.8 46.6 + - + +
66C PRO* 1.3 80.8 - - + +
68C PHE* 1.3 58.2 + - - +
70C SER* 4.3 6.1 - - - -
71C TYR* 2.8 40.7 + + + +
74C LEU* 4.2 6.9 - - + +
114C THR* 3.8 31.8 + - + -
----------------------------------------------------------
Back to top of page
Residues in contact with PHE 68 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
76B THR* 5.9 0.7 - - - +
79B ASN* 3.7 25.4 - - - -
59C TRP* 3.5 30.3 - + - -
63C PHE* 3.6 28.5 - + + -
64C LYS 3.4 22.4 - - - -
65C PRO* 3.2 11.9 + - + +
67C HIS* 1.3 76.7 - - - +
69C GLU* 1.3 61.6 + - + +
71C TYR 3.2 19.1 - - - +
72C PRO* 3.6 8.8 - - - +
74C LEU* 3.6 29.4 - - + -
75C HIS* 3.4 47.8 - + + +
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 69 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
76B THR* 5.8 0.3 + - - -
65C PRO* 3.2 16.6 + - + +
66C PRO* 3.0 11.7 + - + +
68C PHE* 1.3 80.2 - - + +
70C SER* 1.3 63.1 + - - +
71C TYR 3.3 0.6 + - - -
72C PRO* 3.8 14.3 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with SER 70 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
66C PRO* 2.7 25.0 + - - +
67C HIS* 3.8 7.2 - - - -
69C GLU* 1.3 75.5 - - - +
71C TYR* 1.3 79.2 + - - +
72C PRO* 3.4 7.4 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with TYR 71 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
67C HIS* 2.8 21.8 + + + +
68C PHE 3.2 9.2 - - - +
70C SER* 1.3 94.1 - - - +
72C PRO* 1.3 59.2 - - - +
73C GLU* 3.0 23.6 - - - +
74C LEU* 2.9 31.3 + - + +
110C ILE* 3.8 35.2 - - + -
113C GLU* 2.7 43.4 + - - +
114C THR* 3.8 22.5 - - + +
----------------------------------------------------------
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