Contacts of the strand formed by residues 545 - 549 (chain A) in PDB entry 2CKH
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 ASN 545 (chain A).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
538A VAL 3.5 7.4 - - - +
540A ASP* 3.5 11.5 + - - +
543A LYS* 3.5 34.9 + - - +
544A LYS* 1.3 81.5 - - - +
546A ILE* 1.3 65.2 + - - +
547A THR* 3.3 13.0 + - - +
584A TRP* 3.3 8.5 - - - -
585A GLN* 2.9 46.5 + - + +
587A PHE* 4.7 6.9 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with ILE 546 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
537A ALA* 5.2 1.3 - - + -
538A VAL 3.4 9.9 - - - +
539A VAL* 3.7 16.8 - - + +
545A ASN* 1.3 68.6 - - - +
547A THR* 1.3 62.5 + - - +
560A CYS* 3.7 23.4 - - + +
563A LEU* 3.9 27.8 - - + -
564A LEU* 3.7 41.3 - - + +
567A LEU* 4.1 10.8 - - + -
584A TRP* 3.8 12.4 - - + -
585A GLN 3.1 5.1 + - - -
586A LEU* 3.3 24.6 - - + -
587A PHE* 3.2 22.5 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with THR 547 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
537A ALA* 4.5 0.9 - - - -
538A VAL* 2.9 39.9 + - + +
540A ASP* 5.7 2.2 - - + -
543A LYS* 6.3 2.0 - - - -
545A ASN* 3.6 19.3 - - - +
546A ILE* 1.3 76.4 - - - +
548A TYR* 1.3 61.4 + - - +
549A TYR* 3.4 37.9 + - + +
560A CYS* 4.7 1.3 - - - -
587A PHE* 3.4 33.9 + - - -
588A SER* 5.1 0.3 + - - -
589A LYS* 4.7 5.9 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with TYR 548 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
528A ILE* 4.4 10.3 - - + -
530A LEU* 3.9 10.8 - - + +
533A HIS* 4.9 0.7 + - - -
535A CYS* 3.0 41.6 - - + +
536A LEU 3.4 13.0 - - - -
537A ALA* 4.2 6.5 - - + +
547A THR* 1.3 73.1 + - - +
549A TYR* 1.3 66.1 + - - +
550A ASP* 3.7 12.2 + - + +
554A GLY 3.3 24.4 + - - -
555A ILE 4.8 0.2 - - - -
556A ASN* 3.4 47.0 - - + +
559A ALA* 4.4 11.0 - - + -
560A CYS* 4.0 15.2 - - - -
587A PHE 2.9 14.0 + - - +
588A SER* 3.4 10.9 - - - +
589A LYS* 3.1 28.0 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with TYR 549 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
535A CYS* 3.7 4.9 - - - +
536A LEU* 2.6 44.1 + - + +
538A VAL* 3.5 26.4 - - + +
547A THR* 3.4 42.9 + - + +
548A TYR* 1.3 77.7 - - - +
550A ASP* 1.3 58.5 + - - +
551A SER 4.3 0.6 + - - -
589A LYS* 4.3 24.5 - - + +
593A ILE* 4.0 21.3 - - + -
609A TYR* 4.3 27.7 - + + -
613A ILE* 3.7 25.0 - - + +
619A ILE* 4.9 10.3 - - + -
----------------------------------------------------------
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