Contacts of the strand formed by residues 136 - 140 (chain B) in PDB entry 2AX1
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 THR 136 (chain B).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
134B ILE 3.8 4.9 - - - +
135B ASP* 1.3 90.4 + - - +
137B THR* 1.3 61.4 + - - +
161B VAL* 3.4 26.6 - - + +
162B PHE 3.4 13.9 - - - +
163B PRO* 4.4 0.4 - - + -
260B LEU* 3.6 28.0 - - + -
264B GLY* 4.9 1.1 + - - -
265B PRO 2.8 21.2 + - - +
266B LEU* 3.5 7.1 - - - +
267B THR* 2.9 26.3 + - - -
277B ARG* 4.2 13.8 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with THR 137 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
136B THR* 1.3 75.9 + - - +
138B ILE* 1.3 64.0 - - - +
139B MET* 3.8 27.8 - - + -
160B ILE 3.5 1.2 - - - +
161B VAL* 3.2 5.7 - - - +
162B PHE* 2.9 55.8 + - + -
163B PRO 6.0 0.2 - - - -
267B THR* 3.2 14.0 + - - +
268B ASN 4.7 7.1 + - - +
269B SER* 4.8 2.7 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ILE 138 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
4B TYR* 5.4 1.6 - - + -
6B TRP* 3.8 26.0 - - + -
11B ILE* 3.7 36.6 - - + +
12B THR 4.9 0.2 - - - +
136B THR 4.2 0.4 + - - -
137B THR* 1.3 73.2 - - - +
139B MET* 1.3 77.2 + - - +
159B LEU* 4.1 11.4 - - + -
160B ILE 3.3 7.4 - - - +
161B VAL* 4.0 13.5 - - + -
266B LEU* 4.1 31.0 - - + -
267B THR 3.0 23.7 + - - +
268B ASN* 4.1 7.1 - - - +
274B CYS* 4.1 16.6 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with MET 139 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
11B ILE* 4.0 9.6 - - - -
12B THR 3.7 15.5 - - - +
13B PRO* 4.4 2.5 - - + -
14B CYS* 3.6 45.8 - - + +
137B THR* 3.8 19.5 - - + -
138B ILE* 1.3 83.0 - - - +
140B ALA* 1.3 65.4 + - - +
159B LEU* 3.3 6.3 - - - +
160B ILE* 2.8 46.4 + - + +
162B PHE* 4.0 13.7 - - + -
269B SER* 4.0 13.2 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with ALA 140 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
11B ILE* 3.9 7.2 - - + +
12B THR 5.5 1.2 + - - -
17B GLU* 4.6 1.9 - - - +
42B SER* 3.5 40.3 - - - +
45B ALA* 4.6 2.2 - - + -
139B MET* 1.3 80.1 - - - +
141B LYS* 1.3 63.2 + - - +
142B ASN* 3.8 10.7 + - - +
157B ALA* 4.0 13.9 - - + -
158B ARG 3.5 5.6 - - - +
159B LEU* 4.2 9.9 - - + -
160B ILE* 5.1 0.6 - - - +
----------------------------------------------------------
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