Contacts of the strand formed by residues 171 - 175 (chain C) in PDB entry 1I0E
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 GLY 171 (chain C).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
163C ASN* 5.0 4.6 + - - -
165C LEU 4.7 1.4 + - - -
169C PHE 3.4 6.1 + - - -
170C LYS* 1.3 83.0 + - - +
172C LYS* 1.3 63.1 + - - +
218C TRP* 3.8 11.5 - - - -
219C HIS 3.1 17.5 - - - -
220C ASN* 3.4 7.2 - - - -
221C ASP* 4.1 6.5 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LYS 172 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
163C ASN* 4.9 3.4 - - - +
171C GLY* 1.3 76.6 - - - +
173C TYR* 1.3 70.1 + - - +
174C TYR* 3.0 60.3 - - + +
218C TRP* 3.3 10.2 - - - +
219C HIS 3.0 28.9 + - - +
221C ASP* 5.2 4.0 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with TYR 173 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
155C GLU* 2.5 38.5 + - + +
159C VAL* 3.3 44.2 - - + -
162C LEU* 5.1 0.2 - - + -
163C ASN* 4.6 5.2 - - - +
172C LYS* 1.3 86.9 + - - +
174C TYR* 1.3 72.5 + - - +
175C PRO* 3.5 32.2 - - + +
215C ARG 3.4 0.3 - - - -
216C GLY* 2.9 36.3 + - - -
217C ILE 3.6 6.1 - - - -
218C TRP* 3.9 20.5 - + + -
229C VAL* 3.6 22.5 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with TYR 174 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
172C LYS* 3.0 65.7 + - + +
173C TYR* 1.3 90.9 - - - +
175C PRO* 1.3 70.8 - - - +
176C LEU* 3.3 3.3 + - - -
178C SER* 4.9 0.7 - - - -
179C MET* 4.6 15.7 - - + +
183C GLU* 5.2 18.2 - - + -
187C LEU* 5.3 8.5 - - + -
216C GLY* 3.6 1.1 - - - -
217C ILE* 2.8 41.0 + - + +
219C HIS* 3.4 31.2 - + - -
----------------------------------------------------------
Back to top of page
Residues in contact with PRO 175 (chain C).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
155C GLU* 4.5 4.9 - - - +
173C TYR* 3.5 31.3 - - + +
174C TYR* 1.3 87.4 - - - +
176C LEU* 1.3 65.5 + - - +
177C LYS* 3.2 22.7 - - + +
178C SER* 3.1 39.2 + - - +
179C MET* 3.7 7.3 - - - +
215C ARG 3.6 8.3 - - - +
216C GLY* 4.1 0.2 - - - -
----------------------------------------------------------
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