Contacts of the helix formed by residues 127 - 131 (chain B) in PDB entry 6EZG
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 LEU 127 (chain B).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
63B TYR* 4.8 1.9 + - - -
83B MET 3.6 22.4 - - - +
84B TRP* 3.9 27.8 - - + +
85B ASN 3.3 25.8 - - - +
87B ASN* 4.0 10.5 - - + +
123B GLY* 5.8 0.9 - - - -
124B SER* 3.7 28.9 - - - +
125B SER 3.5 2.0 - - - +
126B THR* 1.3 80.8 - - - +
128B ASP* 1.3 65.0 + - - +
129B VAL* 4.1 7.6 - - + +
130B TYR* 3.0 50.5 + - + +
131B ASN* 3.5 7.3 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ASP 128 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
83B MET* 5.2 5.8 + - + +
87B ASN* 3.8 15.2 + - - +
126B THR 4.5 0.7 - - - +
127B LEU* 1.3 71.4 - - - +
129B VAL* 1.3 61.6 + - - +
131B ASN* 3.2 24.0 + - - +
450B LEU* 4.5 12.1 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with VAL 129 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
83B MET* 3.9 25.2 + - + +
84B TRP* 4.0 18.8 - - + -
127B LEU* 4.1 10.1 - - + +
128B ASP* 1.3 79.0 - - - +
130B TYR* 1.3 81.1 + - + +
131B ASN 3.4 0.7 - - - -
441B GLY 5.6 0.4 - - - +
444B ILE* 3.8 5.8 - - + -
445B GLU* 3.6 41.5 - - + +
448B PHE* 3.5 24.9 - - - +
450B LEU* 4.1 10.4 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with TYR 130 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
63B TYR* 5.2 0.4 - - - -
84B TRP* 3.8 15.4 - - - -
100B TRP* 4.3 8.0 - - - -
114B TRP* 3.5 42.1 - + + +
116B TYR* 3.6 19.3 - - + +
117B GLY 4.1 9.7 + - - -
123B GLY* 6.0 0.3 - - - -
124B SER 3.0 30.3 - - - -
125B SER 3.9 14.9 - - - +
127B LEU* 3.0 34.0 + - + +
129B VAL* 1.3 99.1 - - + +
131B ASN* 1.3 64.0 + - - +
132B GLY* 3.1 4.2 + - - -
145B SER* 5.2 3.6 + - - -
444B ILE* 3.8 18.5 - - + +
448B PHE* 3.3 16.4 - + - -
603B C6K 4.6 6.1 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with ASN 131 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
63B TYR* 4.2 15.9 + - - +
100B TRP* 3.8 11.8 + - - -
127B LEU 3.5 2.4 + - - +
128B ASP* 3.2 20.7 + - - +
129B VAL 3.4 1.4 - - - -
130B TYR* 1.3 72.7 - - - +
132B GLY* 1.3 64.8 + - - +
133B LYS* 3.4 41.1 + - - +
134B TYR* 3.9 24.8 + - + -
448B PHE* 3.6 13.2 - - - +
450B LEU* 5.2 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