Contacts of the helix formed by residues 133 - 138 (chain D) in PDB entry 2YVX
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 GLU 133 (chain D).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
128D ARG 5.5 0.2 - - - +
129D TYR* 4.5 9.5 - - - -
130D GLU* 3.5 41.3 + - + +
131D GLU 4.2 1.6 - - - +
132D ASP* 1.3 84.8 + - + +
134D ALA* 1.3 69.0 + - - +
135D GLY 3.2 1.9 + - - +
136D GLY* 3.4 11.6 + - - -
137D LEU* 4.4 4.3 + - - +
211D THR 3.3 13.5 - - - +
212D ASP* 2.9 34.4 - - + +
213D THR 3.6 11.4 - - - +
214D ASP* 5.4 0.9 - - - +
215D GLN* 5.1 1.1 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ALA 134 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
133D GLU* 1.3 72.3 - - - +
135D GLY* 1.3 66.4 + - - +
137D LEU* 2.6 23.4 + - - +
138D MET* 3.1 10.0 + - - -
209D VAL* 4.4 11.7 - - + -
210D ARG 3.4 24.2 - - - +
211D THR 3.3 2.9 + - - +
213D THR 3.6 9.3 + - - +
218D VAL* 4.7 7.0 - - + -
232D VAL* 3.9 24.9 - - + -
243D VAL* 5.0 4.0 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with GLY 135 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
126D LEU* 4.8 8.5 - - - +
129D TYR* 3.3 39.0 - - - -
133D GLU 3.2 2.0 + - - -
134D ALA* 1.3 75.9 - - - +
136D GLY* 1.3 53.7 + - - +
137D LEU 2.5 13.9 + - - -
138D MET* 3.1 27.9 + - - +
211D THR 3.3 6.9 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with GLY 136 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
95D ASP* 2.5 39.6 - - - +
98D GLN* 5.8 1.1 - - - -
126D LEU 4.9 6.5 - - - -
129D TYR* 3.9 5.6 - - - +
130D GLU 3.0 27.0 + - - -
131D GLU* 4.4 6.7 - - - +
133D GLU 3.4 2.2 + - - -
134D ALA 3.0 2.8 + - - -
135D GLY* 1.3 67.5 - - - +
137D LEU* 1.3 63.9 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 137 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
91D ASP* 3.8 9.2 - - - +
95D ASP* 3.9 10.8 - - - +
131D GLU 5.2 1.6 - - - +
133D GLU 4.9 3.4 - - - +
134D ALA* 2.6 12.3 + - - +
135D GLY 2.5 6.7 + - - -
136D GLY* 1.3 89.1 - - - +
138D MET* 1.3 61.3 + - - +
139D THR* 3.6 3.6 + - - +
215D GLN* 3.7 27.6 - - + +
218D VAL* 6.4 2.5 - - + -
242D ILE 4.1 1.4 - - - +
243D VAL* 4.4 19.4 - - + +
247D ASP* 3.5 40.3 - - - +
248D VAL* 5.3 3.1 - - + -
251D VAL* 3.3 34.1 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with MET 138 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
91D ASP* 4.3 4.4 - - - +
125D ALA 5.7 0.4 - - - +
126D LEU* 3.8 33.0 - - + +
129D TYR* 3.4 35.0 - - + -
134D ALA 3.1 5.0 + - - +
135D GLY* 3.1 23.1 - - - +
137D LEU* 1.3 77.2 - - - +
139D THR* 1.3 61.1 + - - +
140D PRO* 4.0 0.6 - - + +
232D VAL* 3.3 44.6 - - + -
240D VAL* 3.2 28.0 - - + +
241D GLY* 4.2 0.4 - - - -
242D ILE 3.0 18.4 - - - +
243D VAL* 4.0 1.5 - - - +
----------------------------------------------------------
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