Contacts of the strand formed by residues 256 - 262 (chain E) in PDB entry 4PEI
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 ILE 256 (chain E).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
10E ALA* 4.9 0.4 - - + -
11E ILE 3.1 8.1 - - - +
12E VAL* 4.2 10.1 - - + -
22E MET* 4.4 2.0 - - + +
25E GLN* 3.3 39.7 - - + +
26E LEU* 4.1 22.7 - - + -
247E LEU* 4.5 2.0 - - - -
250E ILE* 4.0 22.0 - - + -
253E LYS* 4.1 21.2 + - - +
254E ASN 3.6 1.2 - - - -
255E ALA* 1.3 86.9 - - + +
257E SER* 1.3 66.1 + - - +
258E TYR* 3.6 33.2 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with SER 257 (chain E).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
10E ALA* 3.5 1.0 - - - -
11E ILE* 2.7 52.3 + - - +
245E ILE* 5.6 2.9 - - - -
247E LEU* 4.2 14.4 - - - +
256E ILE* 1.3 75.4 - - - +
258E TYR* 1.3 80.9 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with TYR 258 (chain E).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
8E HIS* 5.4 0.9 - - + -
9E ILE 3.4 8.5 - - - +
10E ALA* 3.7 31.4 - - + -
11E ILE* 4.5 0.9 - - - -
25E GLN 4.6 1.4 + - - -
26E LEU* 3.6 18.5 + - + +
29E TYR* 3.2 76.2 - + + +
37E ILE* 4.2 4.0 - - + -
256E ILE* 3.6 25.7 - - + +
257E SER* 1.3 86.9 + - - +
259E LEU* 1.3 70.1 + - - +
260E ASP* 4.0 14.4 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 259 (chain E).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
7E GLN 3.3 5.2 - - - +
8E HIS* 3.5 0.7 - - - -
9E ILE* 2.9 45.2 + - + +
11E ILE* 4.0 15.0 - - + -
176E ILE* 4.6 14.1 - - + -
225E TYR* 4.1 39.3 - - + +
227E ILE* 4.0 23.8 - - + -
245E ILE* 4.1 20.6 - - + -
258E TYR* 1.3 79.1 - - - +
260E ASP* 1.3 62.7 + - - +
261E LEU* 3.8 12.2 + - + -
----------------------------------------------------------
Back to top of page
Residues in contact with ASP 260 (chain E).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
6E ILE* 3.4 20.7 - - + +
7E GLN 3.5 5.4 - - - -
8E HIS* 2.8 28.5 + - - +
29E TYR* 4.4 5.7 + - - -
35E LYS* 4.7 10.8 + - - -
258E TYR* 4.0 11.6 + - - +
259E LEU* 1.3 75.0 - - - +
261E LEU* 1.3 68.7 + - - +
262E PRO* 4.4 2.1 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 261 (chain E).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
6E ILE* 3.2 6.2 - - - -
7E GLN* 2.8 41.4 + - + +
9E ILE* 3.9 23.1 - - + -
124E LEU* 4.4 20.4 - - + -
175E ASP* 5.8 1.6 - - + -
176E ILE* 4.4 14.6 - - + -
225E TYR* 3.9 31.4 - - + +
259E LEU* 3.8 21.7 + - + -
260E ASP* 1.3 85.7 - - - +
262E PRO* 1.3 77.4 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with PRO 262 (chain E).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
5E GLN 3.6 8.3 - - - +
6E ILE* 4.3 2.9 - - + -
7E GLN* 3.1 14.7 + - - -
124E LEU* 5.1 2.8 - - - +
260E ASP 4.4 2.5 - - - +
261E LEU* 1.3 96.1 - - + +
263E LEU* 1.3 59.5 + - - +
264E LYS 3.9 4.0 + - - +
----------------------------------------------------------
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