Contacts of the helix formed by residues 832 - 837 (chain A) in PDB entry 5KZX
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 THR 832 (chain A).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
398A LEU 3.6 13.0 - - - +
399A ASP* 3.4 13.5 - - - -
434A GLY 4.4 4.3 + - - +
435A GLY* 3.6 15.2 + - - +
436A ARG* 3.7 31.4 - - + +
703A TYR* 4.0 5.6 - - - -
830A GLY 3.9 1.0 - - - -
831A LEU* 1.3 83.6 - - + +
833A THR* 1.3 58.1 + - - +
834A THR* 3.2 10.2 + - - -
835A GLU* 3.1 22.7 + - - +
836A SER* 2.8 26.5 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with THR 833 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
366A TYR* 3.7 30.6 - - + +
367A TRP* 3.5 18.8 + - - +
370A GLY* 4.5 2.9 - - - -
399A ASP* 2.7 33.8 + - - +
437A ARG* 4.6 2.4 + - - -
703A TYR* 4.0 2.7 - - + -
706A LEU* 3.7 30.1 - - + -
832A THR* 1.3 69.6 - - - +
834A THR* 1.3 61.1 + - - +
835A GLU 3.2 0.2 - - - -
836A SER* 3.2 8.7 - - - +
837A ARG* 2.9 39.7 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with THR 834 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
435A GLY* 2.7 35.5 + - - -
437A ARG* 3.5 16.5 + - - +
832A THR* 3.2 10.0 + - - -
833A THR* 1.3 80.6 + - - +
835A GLU* 1.3 60.2 + - - +
837A ARG* 4.6 4.0 - - - +
838A GLN* 2.8 33.5 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 835 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
829A PRO 4.9 0.7 - - - -
830A GLY* 3.9 9.2 - - - -
831A LEU* 2.8 32.1 + - - +
832A THR* 3.1 15.0 + - + +
834A THR* 1.3 78.9 - - - +
836A SER* 1.3 65.5 + - - +
838A GLN* 3.1 21.2 + - - +
839A GLN* 3.3 27.8 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with SER 836 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
366A TYR* 4.5 5.2 + - - -
703A TYR* 4.4 15.4 + - - -
706A LEU* 4.8 2.4 - - - +
827A GLN* 3.1 20.0 + - - +
828A GLY 3.8 13.5 - - - -
829A PRO 4.0 2.5 - - - -
830A GLY* 4.1 10.5 - - - -
832A THR 2.8 16.2 + - - -
833A THR* 3.2 23.2 + - - +
835A GLU* 1.3 73.1 - - - +
837A ARG* 1.3 60.5 + - - +
839A GLN* 3.0 28.6 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ARG 837 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
366A TYR* 3.2 64.8 - - + +
710A TYR* 5.1 1.4 - - - -
827A GLN* 3.0 22.0 + - - -
833A THR* 2.9 28.7 + - - +
834A THR* 4.6 4.0 - - - +
836A SER* 1.3 77.1 + - - +
838A GLN* 1.3 58.8 + - + +
839A GLN 3.4 0.6 - - - +
859A TRP* 3.7 34.2 - - + +
860A ASP 2.9 26.7 + - - -
861A ASP* 3.3 22.2 + - - +
862A GLY* 4.0 5.7 - - - -
899A LEU* 4.7 4.9 - - - +
----------------------------------------------------------
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