Contacts of the helix formed by residues 379 - 385 (chain P) in PDB entry 3HX0
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 HIS 379 (chain P).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
375P ILE 3.4 4.8 + - - -
376P GLY 3.1 6.2 + - - -
377P LEU 2.9 0.4 - - - -
378P LYS* 1.3 132.5 + - + +
380P TYR* 1.3 63.6 + - - +
381P SER 3.3 2.7 - - - -
382P ASP* 3.1 15.7 + - + +
383P PHE* 2.8 45.6 + - + -
458P THR* 4.0 0.4 - - - -
459P ASP* 3.6 15.3 - - - -
476P VAL* 3.6 25.0 - - + +
486P HIS* 3.0 43.0 + + + +
----------------------------------------------------------
Back to top of page
Residues in contact with TYR 380 (chain P).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
337P LEU* 3.0 47.5 + - + +
340P ASN* 3.2 21.3 + - + -
341P ILE* 4.0 16.8 - - + +
360P LEU* 3.5 38.1 - - + -
376P GLY 2.9 8.1 + - - +
377P LEU* 2.9 27.6 + - + +
378P LYS 3.6 0.2 - - - -
379P HIS* 1.3 77.8 - - - +
381P SER* 1.3 72.6 + - - +
383P PHE* 3.8 3.6 - - - +
384P LEU* 3.1 47.4 + - + +
----------------------------------------------------------
Back to top of page
Residues in contact with SER 381 (chain P).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
379P HIS 3.3 1.0 - - - -
380P TYR* 1.3 86.2 - - - +
382P ASP* 1.3 67.4 + - - +
384P LEU* 3.6 11.6 + - - +
385P GLU* 3.6 17.3 + - - +
485P ARG* 4.1 4.7 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with ASP 382 (chain P).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
378P LYS 5.5 0.3 - - - +
379P HIS* 3.1 15.8 + - + +
381P SER* 1.3 83.1 - - - +
383P PHE* 1.3 64.0 + - - +
385P GLU* 3.5 9.4 + - - +
484P ARG 4.7 1.4 - - - +
485P ARG* 3.2 34.3 + - - +
486P HIS* 3.2 48.6 + - + +
487P ARG* 3.5 17.0 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with PHE 383 (chain P).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
340P ASN 6.2 0.2 - - - +
342P TRP* 4.8 11.2 - - + -
375P ILE* 3.8 13.9 - - + -
376P GLY* 3.7 17.7 - - - -
379P HIS* 2.8 43.7 + - + +
380P TYR* 3.9 3.4 - - - +
382P ASP* 1.3 69.2 - - - +
384P LEU* 1.3 59.6 + - + +
385P GLU 2.7 24.1 - - - +
426P GLY* 5.2 4.3 - - - +
461P LEU* 5.4 3.4 - - + -
476P VAL* 3.4 34.1 - - + -
486P HIS 3.8 19.1 - - - -
487P ARG* 4.4 2.2 + - - +
488P ARG* 3.7 51.6 + - + +
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 384 (chain P).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
340P ASN* 4.2 31.6 - - + +
380P TYR* 3.1 45.0 + - + +
381P SER* 3.6 6.3 + - - +
383P PHE* 1.3 77.8 - - + +
385P GLU* 1.3 70.0 + - - +
386P ARG* 3.8 7.3 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 385 (chain P).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
381P SER 3.6 6.8 - - - +
382P ASP 3.5 3.6 + - - +
383P PHE 2.7 16.6 + - - +
384P LEU* 1.3 88.8 - - - +
386P ARG* 1.3 57.6 + - - +
426P GLY* 5.0 2.9 - - - +
485P ARG* 3.1 40.1 + - - +
487P ARG* 2.5 30.9 + - - +
----------------------------------------------------------
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