Contacts of the helix formed by residues 166 - 178 (chain D) in PDB entry 6AH0
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 ASP 166 (chain D).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
164D THR 3.4 2.7 + - - -
165D ASP* 1.3 74.7 - - - +
167D THR* 1.3 54.3 + - - +
168D ARG 2.7 5.3 + - - +
169D TYR* 2.3 38.0 + - - +
170D HIS 3.4 3.1 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with THR 167 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
166D ASP* 1.3 72.6 - - - +
168D ARG* 1.3 61.5 + - - +
170D HIS* 3.9 3.9 + - - +
171D VAL* 3.8 9.7 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with ARG 168 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
164D THR 5.4 3.1 + - - -
166D ASP 2.7 2.0 + - - +
167D THR* 1.3 73.4 - - - +
169D TYR* 1.3 53.1 + - - +
170D HIS 2.9 5.2 - - - -
171D VAL* 2.6 27.5 + - - +
172D LEU* 3.0 9.2 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with TYR 169 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
164D THR 5.1 3.8 + - - -
166D ASP* 2.3 24.4 + - - +
168D ARG* 1.3 67.8 - - - +
170D HIS* 1.3 55.4 + - - -
172D LEU* 3.5 4.4 + - - +
173D VAL* 2.9 20.1 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with HIS 170 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
166D ASP 3.4 5.7 + - - -
167D THR* 3.9 5.0 + - - +
168D ARG 2.7 1.8 + - - -
169D TYR* 1.3 75.1 - - - +
171D VAL* 1.3 58.1 + - - +
172D LEU 3.0 1.1 - - - -
173D VAL* 2.6 22.1 + - - +
174D ASN* 2.9 13.0 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with VAL 171 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
167D THR 3.8 6.2 + - - -
168D ARG* 2.6 14.9 + - - +
170D HIS* 1.3 71.0 - - - +
172D LEU* 1.3 58.1 + - - +
174D ASN 4.7 0.4 - - - +
175D LEU* 3.3 19.9 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 172 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
168D ARG 3.0 10.7 + - - -
169D TYR* 3.7 5.6 - - - +
171D VAL* 1.3 77.4 - - - +
173D VAL* 1.3 66.5 + - - +
175D LEU* 5.1 0.4 - - - +
176D GLY* 3.1 15.9 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with VAL 173 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
169D TYR 2.9 11.9 + - - -
170D HIS* 2.6 16.0 + - - +
172D LEU* 1.3 70.2 - - - +
174D ASN* 1.3 55.1 + - - +
176D GLY* 2.7 25.3 + - - -
177D LYS* 3.0 8.5 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with ASN 174 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
170D HIS 2.9 13.1 + - - -
171D VAL* 4.6 0.7 - - - +
173D VAL* 1.3 69.9 - - - +
175D LEU* 1.3 64.0 + - - +
177D LYS* 3.3 9.3 + - - +
178D LYS* 3.6 6.9 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 175 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
171D VAL 3.3 17.6 + - - -
172D LEU* 4.3 0.9 - - - +
173D VAL 3.1 0.6 - - - -
174D ASN* 1.3 75.4 - - - +
176D GLY* 1.3 51.2 + - - +
177D LYS 2.9 0.2 - - - -
178D LYS* 2.5 32.2 + - - +
179D ILE 3.7 2.9 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with GLY 176 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
144D LYS* 5.6 6.4 - - - -
172D LEU 3.1 12.8 + - - -
173D VAL 2.7 13.3 + - - -
175D LEU* 1.3 70.0 - - - +
177D LYS* 1.3 59.0 + - - +
178D LYS 3.2 0.4 - - - -
179D ILE* 4.2 7.2 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with LYS 177 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
173D VAL 3.0 9.0 + - - -
174D ASN* 3.3 6.9 + - - +
175D LEU 2.9 1.4 - - - -
176D GLY* 1.3 79.8 - - - +
178D LYS* 1.3 57.7 + - - +
179D ILE 3.3 7.5 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LYS 178 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
108D GLU 5.7 0.5 - - - +
109D THR* 6.0 0.3 - - - -
174D ASN 3.6 4.9 + - - -
175D LEU* 2.5 21.0 + - - +
177D LYS* 1.3 70.8 - - - +
179D ILE* 1.3 60.5 + - - +
----------------------------------------------------------
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