Contacts of the strand formed by residues 131 - 135 (chain J) in PDB entry 1I43
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 SER 131 (chain J).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
124J SER* 3.3 9.6 - - - -
129J ALA* 3.5 2.1 - - - +
130J GLU* 1.3 83.0 - - - +
132J THR* 1.3 61.7 + - - +
274J ILE 4.1 0.2 - - - +
275J SER* 3.5 1.0 - - - -
276J GLY 3.1 30.3 + - - +
278J LEU* 4.3 17.2 - - - +
281J VAL* 3.1 31.1 - - - +
285J ARG* 3.5 17.2 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with THR 132 (chain J).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
120J GLU* 3.0 47.4 + - + +
123J ILE* 3.8 18.7 - - + +
124J SER* 3.0 27.5 + - - -
131J SER* 1.3 74.2 + - - +
133J LEU* 1.3 72.5 + - - +
134J LEU* 4.6 2.2 - - + -
273J CYS* 4.4 7.4 - - - -
274J ILE 3.2 9.9 - - - +
275J SER* 3.0 25.0 + - - +
281J VAL* 4.4 0.9 - - - -
285J ARG* 3.5 5.4 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 133 (chain J).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
120J GLU* 3.7 2.0 - - - +
132J THR* 1.3 77.7 - - - +
134J LEU* 1.3 67.7 + - - +
135J MET* 3.6 35.0 + - + +
272J GLY 4.5 0.2 - - - -
273J CYS* 3.7 4.5 - - - -
274J ILE* 2.7 40.1 + - + +
281J VAL* 3.8 15.0 - - + +
284J ILE* 3.9 20.6 - - + -
285J ARG* 3.6 51.8 - - + +
288J HIS* 3.9 21.1 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 134 (chain J).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
116J THR* 4.2 11.7 - - + +
119J LEU* 3.6 45.5 - - + +
120J GLU* 3.6 40.5 + - + +
123J ILE* 4.3 12.3 - - + -
132J THR* 4.6 1.1 - - + -
133J LEU* 1.3 80.1 - - - +
135J MET* 1.3 65.1 + - - +
259J ALA* 5.3 2.2 - - + -
271J ALA* 4.4 12.6 - - + -
272J GLY 3.4 20.2 - - - +
273J CYS* 4.9 2.7 - - - -
288J HIS* 3.9 13.2 + - - -
295J LEU* 4.0 27.9 + - + +
303J ILE* 4.8 0.9 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with MET 135 (chain J).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
133J LEU* 3.6 31.6 - - + +
134J LEU* 1.3 74.4 - - - +
136J ALA* 1.3 67.5 + - - +
137J SER 3.2 9.6 - - - +
140J CYS* 3.5 24.7 - - - +
141J ALA* 3.6 22.7 - - - -
144J VAL* 3.3 39.5 - - + -
271J ALA* 3.9 0.2 - - - +
272J GLY* 3.1 18.9 + - - -
274J ILE* 4.0 11.0 - - + -
284J ILE* 4.3 0.2 - - + -
288J HIS* 3.5 25.4 - - + +
293J GLY 3.5 5.2 - - - -
295J LEU* 3.2 22.1 - - - +
----------------------------------------------------------
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