Contacts of the helix formed by residues 366 - 368 (chain A) in PDB entry 4Z2A
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 GLY 366 (chain A).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
295A ASN* 3.7 4.7 - - - -
329A TYR* 3.5 15.7 - - - -
342A SER* 2.7 25.1 + - - -
343A SER* 3.1 11.1 + - - -
365A THR* 1.3 74.2 - - - +
367A THR* 1.3 66.8 + - - -
368A SER 3.1 3.4 - - - -
369A ALA 3.0 9.7 + - - -
607A EDO 3.5 18.4 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with THR 367 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
292A ALA* 3.5 6.0 - - - +
293A SER* 3.6 23.8 - - - +
294A GLY 2.8 25.9 + - - +
295A ASN* 2.8 11.5 + - - -
317A ILE 3.4 24.2 - - - +
318A SER* 3.9 6.7 - - - -
319A SER* 3.2 17.6 + - - +
329A TYR* 3.3 15.4 + - - -
330A SER* 4.6 3.3 - - - -
366A GLY* 1.3 73.0 - - - -
368A SER* 1.3 57.7 + - - +
370A SER* 2.9 19.6 + - - -
371A ALA 3.5 5.2 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with SER 368 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
194A HIS* 6.5 0.9 - - - -
198A CYS* 3.7 13.7 - - - -
253A SER* 3.3 30.5 + - - -
292A ALA* 4.0 9.6 - - - +
295A ASN* 3.6 17.3 + - - +
364A HIS* 4.7 3.1 - - - -
365A THR 4.9 4.7 - - - -
366A GLY 3.1 0.8 - - - -
367A THR* 1.3 77.9 - - - +
369A ALA* 1.3 56.6 + - - +
370A SER 3.3 0.2 - - - -
371A ALA* 4.6 0.5 - - - +
372A PRO* 3.0 23.5 - - - +
605A PO4 5.3 5.2 - - - -
----------------------------------------------------------
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