Contacts of the strand formed by residues 551 - 555 (chain A) in PDB entry 1QU2
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 MET 551 (chain A).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
50A PHE* 3.4 26.9 - - + -
51A ILE 3.4 1.8 + - - +
52A LEU* 3.6 20.4 - - + +
53A HIS 3.2 25.5 + - - -
77A ILE* 3.9 22.0 - - + -
549A ALA* 3.0 3.7 - - - +
550A ASP* 1.3 84.4 - - - +
552A TYR* 1.3 69.0 + - - +
553A LEU* 4.6 11.2 - - - -
579A TYR* 4.4 0.9 - - - -
581A PHE* 3.0 30.7 - - + +
583A LEU* 4.7 7.4 - - - -
699A PHE* 3.4 39.9 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with TYR 552 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
53A HIS* 3.3 42.3 - + + -
534A SER* 4.3 0.9 + - - -
535A HIS* 3.4 23.6 - - - +
539A LEU* 4.0 0.6 - - + +
549A ALA* 3.8 3.6 - - + -
551A MET* 1.3 81.9 - - - +
553A LEU* 1.3 62.0 + - - +
554A GLU 4.3 0.2 - - - -
562A TRP* 3.1 38.1 - + + -
563A PHE* 4.1 7.9 - + + -
566A SER* 3.9 17.9 - - - -
578A PRO* 3.5 23.4 - - + +
579A TYR* 3.3 33.4 - + + -
581A PHE 3.2 5.0 + - - +
582A LEU* 3.8 18.2 - - + +
583A LEU* 3.1 26.6 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 553 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
52A LEU* 4.9 4.4 - - + +
53A HIS 4.7 3.4 + - - -
70A ASN* 3.0 15.0 + - - +
73A LEU* 4.0 24.2 - - + -
74A LYS* 3.2 24.0 - - + +
77A ILE* 3.7 29.6 - - + -
551A MET* 4.6 7.0 - - - -
552A TYR* 1.3 75.6 - - - +
554A GLU* 1.3 82.8 + - - +
583A LEU* 3.0 51.1 - - + +
584A SER* 4.1 3.4 - - - +
585A HIS* 4.0 17.0 - - + +
627A TYR* 5.5 0.7 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 554 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
53A HIS 4.6 0.9 - - - +
54A ASP* 4.5 0.2 - - - -
55A GLY* 2.8 30.3 + - - +
70A ASN* 3.1 13.4 + - - +
74A LYS* 2.8 14.6 + - - -
553A LEU* 1.3 82.9 - - - +
555A GLY* 1.3 63.9 + - - +
558A GLN* 3.5 13.0 - - + -
562A TRP* 3.7 26.0 - - + -
563A PHE* 3.6 13.0 - - + -
583A LEU 3.4 4.4 + - - -
584A SER* 3.1 9.4 - - - -
585A HIS* 3.0 26.9 + - - -
1993A MRC 2.3 49.4 + - + +
----------------------------------------------------------
Back to top of page
Residues in contact with GLY 555 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
554A GLU* 1.3 81.1 - - - +
556A SER* 1.3 60.1 + - - -
557A ASP* 3.2 13.5 - - - -
558A GLN* 2.9 25.1 + - - +
563A PHE* 4.3 4.3 - - - -
584A SER* 4.8 0.9 - - - -
585A HIS* 3.5 22.4 - - - -
1993A MRC 3.5 19.6 - - - -
----------------------------------------------------------
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