Contacts of the strand formed by residues 201 - 206 (chain A) in PDB entry 3U78
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 ALA 201 (chain A).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
195A ILE* 3.7 6.6 - - - +
196A ASP* 3.2 28.4 + - - +
199A ARG* 3.3 38.3 - - + +
200A GLN* 1.3 80.1 - - - +
202A ASP* 1.3 71.8 + - - +
203A SER* 4.8 0.4 - - - -
707A E67 5.8 2.7 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with ASP 202 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
193A ASP* 3.2 28.6 - - - +
194A VAL 3.9 3.8 - - - -
195A ILE* 4.6 9.3 - - - +
199A ARG* 5.7 1.2 + - - -
201A ALA* 1.3 79.2 - - - +
203A SER* 1.3 62.5 + - - +
204A LYS* 5.3 3.1 - - - +
707A E67 3.8 43.9 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with SER 203 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
193A ASP* 3.2 12.0 - - - +
194A VAL* 2.8 42.5 + - - -
196A ASP* 4.2 18.7 + - - +
199A ARG* 4.4 9.5 + - - -
201A ALA 4.2 0.5 + - - -
202A ASP* 1.3 76.4 + - - +
204A LYS* 1.3 68.1 + - - +
205A MET* 6.3 0.9 - - - -
223A LEU* 5.6 2.8 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LYS 204 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
191A VAL* 3.9 22.2 - - + +
192A ILE 3.7 15.5 - - - +
193A ASP* 3.0 27.4 + - - +
194A VAL* 5.0 0.4 - - - -
202A ASP* 5.3 4.2 - - - +
203A SER* 1.3 81.0 + - - +
205A MET* 1.3 68.1 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with MET 205 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
191A VAL* 3.4 9.6 - - - +
192A ILE* 2.9 31.1 + - + +
194A VAL* 3.6 36.1 - - + -
203A SER* 6.3 0.9 - - - -
204A LYS* 1.3 78.2 - - - +
206A THR* 1.3 67.5 + - - +
209A ASN* 3.2 22.4 - - + +
210A TYR* 3.0 41.1 - - + +
213A TYR* 4.4 10.1 - - + -
223A LEU* 4.5 10.5 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with THR 206 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
188A GLY 3.4 13.5 - - - +
189A ASP* 4.5 11.4 - - - +
190A LYS 3.3 7.6 - - - -
191A VAL* 4.4 7.9 - - + +
192A ILE* 4.5 0.7 - - - -
205A MET* 1.3 78.7 - - - +
207A LEU* 1.3 65.2 + - - +
208A HIS* 3.0 6.1 + - + +
209A ASN* 2.7 51.7 + - - +
210A TYR* 3.1 10.7 + - - +
----------------------------------------------------------
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