Contacts of the strand formed by residues 253 - 257 (chain A) in PDB entry 4OI0
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 VAL 253 (chain A).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
90A ILE* 5.6 1.3 - - + -
94A MET* 6.5 1.1 - - + -
97A VAL* 6.3 3.4 - - + -
115A PRO* 5.7 4.9 - - + -
116A ARG 3.1 7.0 + - - +
117A LEU* 3.3 19.2 - - + -
118A LEU* 2.9 26.0 + - - +
251A VAL* 3.5 2.3 - - - +
252A ASP* 1.3 94.5 - - + +
254A VAL* 1.3 67.1 - - - +
255A ILE* 3.5 27.4 - - + -
274A VAL* 4.4 0.2 - - - -
275A ARG* 3.2 29.8 - - + +
277A THR* 5.1 1.6 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with VAL 254 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
118A LEU* 3.4 19.7 - - + +
120A VAL* 3.9 18.4 - - + -
242A ILE* 6.3 0.2 - - + -
246A ALA* 4.8 2.2 - - + -
251A VAL* 4.0 14.1 - - + -
253A VAL* 1.3 77.0 - - - +
255A ILE* 1.3 64.7 + - - +
256A VAL* 4.0 1.3 - - + -
266A LEU* 3.8 17.3 - - + -
270A LEU* 3.7 22.4 - - + -
274A VAL* 3.9 8.5 - - + -
275A ARG 2.9 8.3 + - - +
276A LEU* 3.3 26.6 - - + +
277A THR 2.9 26.5 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ILE 255 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
90A ILE* 4.2 30.5 - - + -
117A LEU* 3.7 24.0 - - + -
118A LEU 2.8 9.6 + - - +
119A LEU* 3.6 15.1 - - + -
120A VAL* 2.9 28.8 + - - +
130A VAL* 5.7 0.9 - - + -
253A VAL* 3.5 22.4 - - + -
254A VAL* 1.3 73.5 - - - +
256A VAL* 1.3 63.2 + - - +
257A LEU* 3.8 11.5 - - + +
277A THR* 3.4 23.3 - - - +
279A VAL* 3.9 29.8 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with VAL 256 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
120A VAL* 3.5 18.8 - - + +
254A VAL* 4.0 0.7 - - + -
255A ILE* 1.3 73.4 - - - +
257A LEU* 1.3 63.6 + - - +
259A HIS* 3.5 31.0 - - + +
262A LEU* 4.1 17.3 - - + -
263A TYR* 4.1 16.2 - - + +
266A LEU* 4.1 7.2 - - + -
276A LEU* 3.7 27.6 - - + -
277A THR 2.9 7.6 + - - +
278A HIS* 3.4 14.9 - - + -
279A VAL* 3.0 27.2 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 257 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
87A TYR* 4.3 8.5 - - - +
119A LEU* 3.7 27.6 - - + -
120A VAL 2.9 20.4 + - - +
121A GLY* 3.8 1.6 - - - -
122A PRO* 3.6 17.2 - - - +
125A VAL* 3.3 36.4 - - + +
126A GLY 3.9 8.7 - - - +
127A LYS* 4.1 9.4 - - + +
130A VAL* 3.8 27.8 - - + -
255A ILE* 3.8 9.4 - - + +
256A VAL* 1.3 70.9 - - - +
258A ASP* 1.3 72.6 + - + +
259A HIS 3.4 1.2 + - - -
279A VAL* 3.3 18.4 - - + +
280A PRO 5.0 0.9 - - - +
281A LYS 5.1 1.1 - - - +
----------------------------------------------------------
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