Contacts of the helix formed by residues 555 - 562 (chain A) in PDB entry 1ZJK
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 ARG 555 (chain A).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
553A LEU 3.4 5.0 + - - +
554A PRO* 1.3 75.7 - - - +
556A LYS* 1.3 68.9 + - - +
557A GLU* 3.2 35.8 - - - +
558A ALA* 2.9 23.1 + - + +
561A PHE* 4.5 6.3 - - - -
641A ASP* 3.3 36.6 + - - +
643A GLU* 4.2 15.4 - - - +
644A THR* 4.5 8.5 - - - +
673A ILE* 3.7 5.5 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LYS 556 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
555A ARG* 1.3 76.7 - - - +
557A GLU* 1.3 64.5 + - + +
558A ALA 3.2 4.0 + - - -
559A GLU* 4.2 6.8 + - - +
673A ILE* 3.9 13.7 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 557 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
555A ARG* 3.1 31.9 + - - +
556A LYS* 1.3 81.0 - - + +
558A ALA* 1.3 58.5 + - - +
559A GLU* 3.3 3.1 - - - -
560A SER* 3.1 27.5 + - - +
561A PHE* 3.7 9.6 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with ALA 558 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
554A PRO* 3.6 26.0 - - + -
555A ARG* 2.9 25.7 + - + +
556A LYS 3.2 0.6 + - - -
557A GLU* 1.3 75.0 - - - +
559A GLU* 1.3 62.2 + - - +
560A SER 3.0 7.1 + - - -
561A PHE* 3.1 22.1 + - - -
562A MET* 3.7 16.0 + - - +
641A ASP* 5.8 0.4 - - - +
648A PHE* 3.9 16.3 - - + -
673A ILE* 4.2 4.5 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 559 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
556A LYS 4.6 5.6 - - - +
557A GLU* 5.1 0.9 - - - -
558A ALA* 1.3 78.3 - - - +
560A SER* 1.3 62.0 + - - +
561A PHE 3.2 0.2 - - - -
562A MET* 3.2 29.5 + - - +
563A ARG* 3.5 15.2 + - - +
671A LYS* 2.9 38.1 + - - -
673A ILE* 3.8 26.8 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with SER 560 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
557A GLU* 3.1 23.8 + - - +
558A ALA 3.0 0.4 - - - -
559A GLU* 1.3 79.2 - - - +
561A PHE* 1.3 74.2 + - - +
562A MET 3.4 0.4 - - - -
563A ARG* 3.0 46.5 + - - +
566A ASP* 3.3 4.0 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with PHE 561 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
555A ARG* 4.5 8.5 - - - -
557A GLU* 3.7 17.5 - - + -
558A ALA* 3.1 17.7 + - - +
560A SER* 1.3 87.0 - - - +
562A MET* 1.3 62.8 + - - +
566A ASP* 3.0 21.9 - - - +
567A ILE 5.2 0.5 - - - +
639A PHE* 3.8 12.0 - - + +
640A LEU 4.0 18.4 - - - +
641A ASP* 3.5 28.7 - - - -
642A SER* 3.1 30.1 - - - -
643A GLU* 4.6 9.0 - - + -
648A PHE* 4.3 17.9 - + + -
----------------------------------------------------------
Back to top of page
Residues in contact with MET 562 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
554A PRO* 5.6 2.2 - - - -
558A ALA* 3.8 14.4 - - - +
559A GLU* 3.2 27.2 + - - +
561A PHE* 1.3 83.9 - - - +
563A ARG* 1.3 63.8 + - - +
566A ASP* 4.0 3.4 - - - -
592A ILE* 3.9 16.3 - - + +
617A LEU* 4.1 22.0 - - + -
639A PHE* 3.9 26.9 - - + -
648A PHE* 3.8 14.8 - - + -
650A GLY* 3.8 40.2 - - - +
671A LYS* 5.3 6.3 - - + -
673A ILE* 5.9 7.4 - - + -
----------------------------------------------------------
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