Contacts of the helix formed by residues 500 - 506 (chain R) in PDB entry 5NTI
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 500 (chain R).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
500C PRO* 3.6 43.5 - - + +
501C LEU* 3.7 9.2 - - + +
504C GLU* 2.7 23.5 + - + +
495D GLN* 3.6 43.1 - - + +
496D ALA* 3.9 18.2 - - + +
499R THR* 1.3 68.8 - - - +
501R LEU* 1.3 60.2 + - - +
503R LEU* 3.4 15.5 + - + +
504R LEU* 3.1 34.5 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 501 (chain R).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
328C ILE* 5.9 0.7 - - + -
332C VAL* 4.2 24.9 - - + -
350C ILE* 3.8 41.5 - - + +
353C LEU* 4.0 16.8 - - + -
354C LYS* 3.8 19.1 - - + +
501C LEU* 4.2 17.2 - - + +
504C GLU* 3.1 15.8 + - - +
505C LEU* 3.9 21.3 - - + -
499R THR* 4.0 3.1 - - - +
500R LEU* 1.3 75.7 - - - +
502R GLN* 1.3 63.5 + - - +
504R LEU* 3.3 6.9 + - + +
505R LEU* 3.2 28.2 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLN 502 (chain R).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
346C GLN* 6.0 3.6 - - + +
350C ILE* 3.5 28.0 - - + +
499R THR* 3.3 45.3 + - - +
501R LEU* 1.3 75.9 - - - +
503R LEU* 1.3 58.8 + - + +
505R LEU* 3.3 3.9 + - - +
506R GLY 3.0 34.7 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 503 (chain R).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
492D ILE* 3.9 44.3 - - + +
495D GLN* 3.6 34.5 - - + +
499R THR 3.2 17.3 + - - +
500R LEU* 3.5 18.8 - - + +
501R LEU 3.2 0.2 - - - -
502R GLN* 1.3 80.0 - - + +
504R LEU* 1.3 60.8 + - - +
505R LEU 3.4 0.7 + - - -
506R GLY* 3.5 12.6 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 504 (chain R).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
329C GLN* 5.0 19.5 - - + +
332C VAL* 4.2 21.3 - - + +
336C LYS* 2.8 27.0 + - - +
501C LEU* 3.8 35.7 - - + -
492D ILE* 3.9 22.2 - - + +
493D VAL* 5.4 6.5 - - + +
496D ALA* 4.4 12.3 - - + -
500R LEU 3.1 22.6 + - - +
501R LEU* 3.3 12.1 + - + +
503R LEU* 1.3 76.3 - - - +
505R LEU* 1.3 58.1 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 505 (chain R).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
332C VAL* 4.4 6.1 - - + +
336C LYS* 3.7 40.3 + - + +
341C PHE* 4.0 15.7 - - + -
342C MET* 3.9 21.1 - - + +
349C GLN* 4.1 22.4 - - + +
350C ILE* 3.6 31.6 - - + +
353C LEU* 3.9 31.6 - - + -
501R LEU 3.2 13.4 + - - +
502R GLN* 3.9 4.0 - - - +
503R LEU 3.2 0.2 - - - -
504R LEU* 1.3 79.8 - - - +
506R GLY* 1.3 58.0 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLY 506 (chain R).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
346C GLN* 4.4 18.0 + - - +
502R GLN* 3.0 18.1 + - - +
503R LEU* 3.5 10.6 + - - -
505R LEU* 1.3 79.7 - - - +
----------------------------------------------------------
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