Contacts of the helix formed by residues 76 - 86 (chain P) in PDB entry 6CNC
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 LEU 76 (chain P).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
19P HIS* 3.9 22.2 - - + +
23P MET* 5.9 3.8 - - + -
60P LEU* 6.2 0.9 - - - -
74P GLY 5.2 1.8 - - - +
75P VAL* 1.3 83.6 - - - +
77P GLU* 1.3 64.1 + - - +
78P SER* 3.2 13.8 + - - +
79P GLU* 3.7 6.4 + - - +
80P ALA* 3.0 25.3 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 77 (chain P).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
58P LYS 4.7 0.2 - - - +
59P ASN* 3.4 26.9 + - - +
60P LEU* 3.5 21.8 - - - +
76P LEU* 1.3 72.5 - - - +
78P SER* 1.3 60.8 + - - +
79P GLU 3.6 0.2 - - - -
80P ALA* 3.6 5.7 - - - +
81P GLN* 2.6 45.6 + - + +
----------------------------------------------------------
Back to top of page
Residues in contact with SER 78 (chain P).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
76P LEU* 3.2 9.8 + - - +
77P GLU* 1.3 80.9 - - - +
79P GLU* 1.3 72.5 + - - +
81P GLN* 4.4 0.9 - - - +
82P LYS* 3.0 28.7 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 79 (chain P).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
62P LYS* 5.7 1.1 - - - -
73P GLN* 5.0 9.7 + - - -
74P GLY 4.6 2.8 - - - +
75P VAL* 3.3 37.2 - - + +
76P LEU 3.8 4.9 + - - +
78P SER* 1.3 83.6 + - - +
80P ALA* 1.3 59.2 + - - +
82P LYS* 3.3 29.5 - - + +
83P LYS* 2.9 33.4 + - + +
94P TYR* 5.5 3.2 - - + +
98P GLU* 4.4 17.0 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ALA 80 (chain P).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
59P ASN* 3.2 43.8 + - + +
75P VAL* 4.2 2.9 - - + -
76P LEU 3.0 22.0 + - - +
77P GLU* 3.6 8.1 - - - +
79P GLU* 1.3 73.8 - - - +
81P GLN* 1.3 61.1 + - - +
82P LYS 3.1 0.9 - - - -
83P LYS* 3.2 14.8 - - - +
84P ALA* 2.9 30.0 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLN 81 (chain P).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
59P ASN* 5.0 1.8 + - - +
77P GLU* 2.6 34.7 + - + +
78P SER 4.4 0.9 - - - +
80P ALA* 1.3 70.8 - - - +
82P LYS* 1.3 56.7 + - - +
84P ALA* 4.4 10.1 - - - +
85P THR* 2.2 68.4 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LYS 82 (chain P).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
78P SER* 3.0 19.5 + - - +
79P GLU* 3.3 29.0 - - - +
80P ALA 3.1 0.2 - - - -
81P GLN* 1.3 76.8 - - - +
83P LYS* 1.3 57.2 + - - +
85P THR* 3.1 7.7 + - - -
86P MET* 2.8 48.4 + - + +
94P TYR* 3.1 35.5 + - + +
131P GLN* 5.4 1.0 + - - +
133P TYR* 3.4 39.2 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with LYS 83 (chain P).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
56P LEU* 3.9 11.1 + - - +
59P ASN* 3.2 35.3 - - - +
62P LYS* 3.3 44.5 - - - +
75P VAL* 4.7 3.4 - - + -
79P GLU* 2.9 20.0 + - + +
80P ALA* 3.2 11.2 - - - +
82P LYS* 1.3 73.2 - - - +
84P ALA* 1.3 65.8 + - - +
86P MET* 3.0 34.7 + - + +
87P SER 4.8 1.0 - - - +
91P ALA* 5.0 11.4 - - - +
94P TYR* 4.7 10.1 - - + -
95P SER* 4.2 12.1 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ALA 84 (chain P).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
59P ASN* 3.9 16.6 - - + +
80P ALA 2.9 17.9 + - - +
81P GLN* 4.3 12.8 - - - +
83P LYS* 1.3 79.6 - - + +
85P THR* 1.3 60.4 + - - +
86P MET 3.4 7.1 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with THR 85 (chain P).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
81P GLN* 2.2 48.6 + - - +
82P LYS* 3.3 7.6 - - - -
84P ALA* 1.3 72.7 - - - +
86P MET* 1.3 65.8 + - - +
87P SER* 3.8 0.7 + - - -
131P GLN* 5.1 11.4 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with MET 86 (chain P).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
82P LYS* 2.8 32.2 + - + +
83P LYS* 3.0 22.7 + - + +
84P ALA 3.4 9.5 - - - +
85P THR* 1.3 82.6 - - - +
87P SER* 1.3 68.3 + - - +
90P GLU* 3.0 35.0 - - + +
91P ALA* 4.8 1.1 - - - +
94P TYR* 4.3 15.5 - - + -
128P LEU* 3.6 19.1 - - + -
131P GLN* 3.5 20.9 - - - +
133P TYR* 3.5 34.3 - - + -
----------------------------------------------------------
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