Contacts of the helix formed by residues 15 - 22 (chain U) in PDB entry 1NJI
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 15 (chain U).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
100A C 3.5 18.8 - - - +
101A C 3.9 25.4 - - - +
13U ARG 3.7 6.3 - - - +
14U ALA* 1.3 88.1 - - - +
16U LEU* 1.3 68.8 + - - +
17U HIS* 3.3 6.5 - - - +
18U GLU* 2.8 41.3 + - - +
19U ARG* 3.4 4.2 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 16 (chain U).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
82A C 3.5 22.9 - - - +
83A C 4.0 8.3 - - - +
99A A 3.0 40.8 - - + +
100A C 3.5 26.4 + - - +
14U ALA 3.7 0.2 + - - -
15U PRO* 1.3 71.0 - - - +
17U HIS* 1.3 58.5 + - - +
19U ARG* 2.9 34.1 + - - +
20U HIS 3.9 2.8 + - - -
67U LEU* 3.8 42.3 - - + +
68U ASP* 4.8 8.5 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with HIS 17 (chain U).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
77A G 4.0 11.4 + - - -
78A G 4.0 17.7 + - - +
99A A 3.9 14.1 - - - +
100A C 2.6 42.0 + - - +
101A C 3.1 33.3 + - - -
15U PRO* 3.1 5.5 + - + +
16U LEU* 1.3 77.8 - - - +
18U GLU* 1.3 91.3 + - + +
19U ARG 3.2 0.7 - - - -
20U HIS* 3.2 27.5 + - - +
21U LYS 5.1 0.2 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 18 (chain U).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
101A C 5.5 0.9 - - - +
301A G 4.6 13.4 + - - -
10U SER 5.4 0.3 - - - +
14U ALA* 3.9 14.7 - - + +
15U PRO* 2.8 33.4 + - - +
17U HIS* 1.3 103.6 + - + +
19U ARG* 1.3 59.9 + - - +
20U HIS 3.3 1.3 - - - -
21U LYS* 3.0 49.4 + - - +
22U GLN* 4.3 5.0 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with ARG 19 (chain U).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
11U GLN 3.3 10.8 + - - -
12U ARG* 2.8 40.2 + - - +
13U ARG 3.9 1.0 - - - +
14U ALA 2.9 18.7 + - - +
15U PRO 3.5 11.9 - - - +
16U LEU* 2.9 20.5 + - - +
18U GLU* 1.3 79.0 - - - +
20U HIS* 1.3 57.7 + - - +
21U LYS 3.0 2.5 - - - -
22U GLN* 2.6 56.1 + - - +
23U VAL* 3.6 6.9 + - - +
67U LEU* 3.2 34.1 + - + +
68U ASP* 2.7 36.5 + - - +
70U ALA* 4.7 2.6 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with HIS 20 (chain U).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
78A G 4.1 1.8 - - - -
79A G 3.5 40.3 - - - -
80A A 4.4 0.4 - - - -
81A G 4.9 2.2 - - - -
99A A 2.9 28.9 + + - -
16U LEU 4.2 0.4 - - - -
17U HIS* 3.2 29.6 - - - +
18U GLU 3.3 0.6 - - - -
19U ARG* 1.3 78.1 - - - +
21U LYS* 1.3 62.8 + - - +
22U GLN 3.0 1.6 + - - -
23U VAL* 3.0 24.1 + - - +
24U ARG* 3.6 9.4 - - - +
41U ARG* 2.6 45.8 + - + +
67U LEU* 3.6 21.9 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with LYS 21 (chain U).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
301A G 5.9 0.8 + - - -
302A A 5.6 4.6 + - - -
343A C 3.5 5.9 + - - -
344A C 3.3 52.1 + - - +
345A G 3.9 15.9 + - - +
17U HIS 5.1 0.2 + - - -
18U GLU* 3.0 49.1 + - - +
20U HIS* 1.3 78.1 - - - +
22U GLN* 1.3 63.8 + - + +
23U VAL 3.3 0.7 - - - -
24U ARG* 3.5 23.5 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLN 22 (chain U).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
343A C 4.9 3.8 - - - -
344A C 6.1 1.8 - - - +
11U GLN* 3.0 41.8 + - + +
14U ALA* 4.0 9.9 - - - +
18U GLU 4.3 3.8 + - - +
19U ARG* 2.6 55.4 + - + +
21U LYS* 1.3 76.8 - - + +
23U VAL* 1.3 60.5 + - - +
24U ARG 3.5 1.6 - - - -
70U ALA* 3.9 25.4 - - + +
92U ASP* 5.3 3.1 - - - +
93U THR* 3.6 8.4 + - - -
----------------------------------------------------------
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