Contacts of the strand formed by residues 235 - 242 (chain D) in PDB entry 1MWA
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 GLN 235 (chain D).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
124D PRO* 3.2 36.0 - - - +
216D PHE* 3.1 39.1 - - + +
231D LYS 4.7 1.4 + - - -
232D PRO* 3.3 25.3 - - - +
233D VAL* 2.8 19.3 + - + +
234D THR* 1.3 76.1 - - - +
236D ASN* 1.3 73.2 + - - +
237D ILE* 2.9 29.3 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with ASN 236 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
213D GLN* 3.0 33.1 + - + +
214D VAL 3.8 7.6 - - - +
215D GLN* 4.2 22.4 - - - +
216D PHE 4.8 2.1 + - - +
234D THR* 3.1 11.1 - - - +
235D GLN* 1.3 94.2 - - - +
237D ILE* 1.3 69.1 + - - +
238D SER* 3.5 9.4 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with ILE 237 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
124D PRO* 4.2 6.7 - - + -
125D PRO* 2.9 54.7 - - + +
126D LYS* 4.7 1.1 - - - -
127D VAL* 3.4 19.3 - - + +
213D GLN* 4.1 0.2 - - - +
214D VAL* 3.2 27.1 + - + +
235D GLN* 2.9 25.5 - - + +
236D ASN* 1.3 77.0 - - - +
238D SER* 1.3 65.0 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with SER 238 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
127D VAL* 3.2 16.4 - - - +
211D ARG* 4.9 11.5 + - - -
212D CYS 3.4 17.5 - - - -
213D GLN* 4.4 7.9 - - - +
236D ASN 3.5 6.6 + - - -
237D ILE* 1.3 81.7 - - - +
239D ALA* 1.3 63.9 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ALA 239 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
127D VAL* 3.6 29.7 - - + +
128D SER 4.4 1.8 - - - +
129D LEU* 3.9 18.7 - - + +
212D CYS* 3.3 31.1 + - - +
238D SER* 1.3 80.0 - - - +
240D GLU* 1.3 61.0 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLU 240 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
134C ARG* 5.9 0.5 + - - -
129D LEU* 4.3 9.5 - - - +
209D HIS* 3.9 9.8 - - + -
210D PHE 3.9 13.0 - - - +
211D ARG* 4.1 21.1 - - - +
212D CYS 4.8 2.9 - - - +
239D ALA* 1.3 76.1 - - - +
241D ALA* 1.3 83.2 + - - +
242D TRP* 3.7 27.4 - - - -
244D ARG* 5.9 0.2 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with ALA 241 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
129D LEU* 4.8 13.7 - - + +
145D LEU* 6.4 0.7 - - + -
161D TRP* 6.3 1.6 - - + -
203D TRP* 4.3 17.7 - - + -
209D HIS* 4.0 2.8 + - - -
210D PHE* 3.6 47.5 + - + +
240D GLU* 1.3 90.5 - - - +
242D TRP* 1.3 61.9 + - - +
244D ARG* 4.1 4.3 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with TRP 242 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
203D TRP* 4.6 2.6 - - - +
207D ARG* 6.3 0.2 - - - -
208D ASN 3.7 17.0 + - - -
209D HIS* 5.1 11.6 + + - +
210D PHE* 4.1 17.4 - - - +
240D GLU* 3.7 26.9 - - - -
241D ALA* 1.3 73.9 - - - +
243D GLY* 1.3 77.7 + - - +
244D ARG* 2.9 47.2 + - - +
----------------------------------------------------------
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