Contacts of the strand formed by residues 36 - 40 (chain U) in PDB entry 5A0Q
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 ALA 36 (chain U).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
34U SER 3.4 3.2 + - - -
35U THR* 1.3 76.3 - - - +
37U ILE* 1.3 64.8 + - - +
48U GLY 3.5 5.8 - - - -
49U VAL* 3.5 26.2 - - + -
76U ALA 4.4 1.3 - - - +
77U VAL 4.1 12.1 - - - +
78U ALA* 4.5 4.5 - - + -
136U MET* 3.4 25.1 - - + -
164U ALA* 3.3 1.7 - - - -
165U ILE 3.1 28.2 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ILE 37 (chain U).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
35U THR* 4.9 3.4 - - - +
36U ALA* 1.3 76.7 - - - +
38U GLY* 1.4 63.1 + - - +
39U ILE* 4.1 8.3 - - + -
46U VAL 3.7 0.2 - - - +
48U GLY 2.7 34.1 + - - +
136U MET* 3.8 1.1 - - - -
163U CYS 3.4 14.6 - - - +
164U ALA* 4.1 15.3 - - + -
172U ALA* 4.7 1.8 - - + -
176U ILE* 4.3 14.8 - - + -
193U VAL* 3.5 14.2 - - + +
196U ILE* 3.6 45.8 - - + -
197U ILE* 3.7 35.4 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with GLY 38 (chain U).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
37U ILE* 1.4 72.0 - - - +
39U ILE* 1.3 66.4 + - - +
45U VAL* 4.5 6.1 - - - -
46U VAL 3.3 9.2 - - - -
47U PHE* 3.9 7.9 - - - -
136U MET* 3.1 20.2 - - - -
148U LEU* 3.7 8.3 - - - -
163U CYS 2.7 29.8 + - - +
176U ILE* 5.3 0.2 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ILE 39 (chain U).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
37U ILE* 4.1 7.0 - - + -
38U GLY* 1.3 78.7 - - - +
40U ARG* 1.4 74.9 + - - +
41U CYS* 3.6 3.9 + - + +
44U GLY 3.7 0.7 - - - +
45U VAL* 3.4 19.8 - - - +
46U VAL 3.3 9.6 + - - +
148U LEU* 3.8 3.5 - - - +
162U GLY* 4.2 2.9 - - - -
176U ILE* 3.7 13.5 - - + -
179U LEU* 3.5 26.5 - - + -
181U MET* 3.5 24.7 - - + -
189U ILE* 3.9 22.7 - - + +
193U VAL* 3.4 26.9 - - + -
196U ILE* 3.7 12.8 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with ARG 40 (chain U).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
39U ILE* 1.4 72.3 - - - +
41U CYS* 1.3 59.3 + - - +
44U GLY 4.0 2.5 - - - -
45U VAL* 4.1 9.2 - - + -
146U ALA* 3.5 37.9 + - + +
147U GLN* 4.1 20.3 + - - +
148U LEU* 3.3 14.2 - - + +
160U TYR 3.5 18.7 + - - +
161U TRP* 3.1 65.7 + - - +
181U MET* 1.6 41.0 - - - +
----------------------------------------------------------
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