Contacts of the strand formed by residues 171 - 174 (chain D) in PDB entry 3DLX
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 PRO 171 (chain D).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
126D TYR* 2.6 32.8 + - - +
133D VAL 3.3 7.8 - - - +
135D LEU* 5.6 2.1 + - - +
164D LEU* 4.7 0.9 - - + -
169D GLY 3.3 8.0 - - - +
170D SER* 1.3 88.4 + - - +
172D ILE* 1.3 58.4 + - - +
173D LYS 5.1 0.7 - - - +
174D TYR* 3.2 37.2 - - + +
180D VAL* 4.1 18.4 - - + -
182D ILE 4.0 3.8 - - - +
414D MET* 4.2 25.8 - - + -
416D PRO* 6.5 0.9 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with ILE 172 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
110D ARG* 3.7 31.2 - - - +
126D TYR* 3.9 7.6 - - - -
132D GLU* 3.3 6.7 - - + -
133D VAL 2.7 51.1 + - - +
134D GLU* 4.0 20.2 - - + -
170D SER* 3.2 7.4 + - - +
171D PRO* 1.3 76.4 - - - +
173D LYS* 1.3 58.3 + - + +
182D ILE* 2.6 30.3 + - + +
183D ALA 4.1 4.3 - - - +
184D SER* 3.7 29.6 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LYS 173 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
109D LYS* 4.6 6.7 - - - +
126D TYR* 4.8 1.8 - - - -
129D GLY 3.9 18.4 + - - +
130D GLU 4.8 7.9 + - - -
131D LEU 4.3 12.1 - - - +
132D GLU* 3.6 35.7 + - + +
171D PRO 3.8 0.4 - - - -
172D ILE* 1.3 82.4 - - - +
174D TYR* 1.3 66.4 + - - +
175D ASN* 5.8 1.1 - - - +
180D VAL* 3.6 3.9 - - - +
181D ALA* 2.7 39.5 + - + -
182D ILE* 3.0 32.0 + - + +
----------------------------------------------------------
Back to top of page
Residues in contact with TYR 174 (chain D).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
126D TYR* 3.5 50.5 + + - +
127D LEU* 3.7 35.2 - - + +
129D GLY* 3.0 25.9 - - - +
171D PRO* 3.2 24.6 - - + +
173D LYS* 1.3 84.2 - - - +
175D ASN* 1.3 69.0 + - - +
178D GLY 3.7 16.2 - - - +
179D SER 3.0 24.0 - - - +
180D VAL* 3.4 21.3 - - + -
181D ALA* 4.2 0.4 - - - -
414D MET* 5.3 2.6 - - - -
416D PRO* 5.3 3.1 - - - +
417D GLY* 4.3 16.8 + - - -
----------------------------------------------------------
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