Contacts of the strand formed by residues 123 - 127 (chain B) in PDB entry 3PII
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 TYR 123 (chain B).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1B MET* 3.6 26.8 - - + +
20B LYS* 3.5 36.4 + - + -
21B PRO* 4.4 2.0 - - + +
29B LEU* 4.0 22.0 - - + -
30B VAL 3.2 17.5 - - - +
31B ARG* 3.6 25.6 - - + -
32B ILE* 4.3 3.6 - - - +
68B GLU* 3.0 45.1 + - - -
118B GLY 4.4 1.6 - - - +
121B ALA* 3.6 19.2 - - - +
122B GLU* 1.3 97.5 - - + +
124B CYS* 1.3 62.8 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with CYS 124 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
21B PRO* 4.5 2.5 - - - -
29B LEU* 3.7 4.7 - - - +
30B VAL* 2.8 36.1 + - - +
32B ILE* 4.0 11.0 - - + -
85B ILE* 3.6 31.0 - - + -
89B TYR* 5.4 0.4 - - - -
112B ALA* 6.2 0.2 - - - -
117B ASP* 3.6 13.7 - - - -
118B GLY* 2.9 33.9 - - - +
123B TYR* 1.3 76.0 - - - +
125B ARG* 1.3 76.1 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ARG 125 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
21B PRO* 4.0 31.8 - - + +
22B THR* 3.0 28.5 + - - +
23B ILE* 3.9 16.6 - - + -
27B GLU* 3.2 35.4 + - + +
28B VAL 3.5 4.9 - - - +
29B LEU* 4.7 2.7 - - - -
89B TYR* 3.2 26.7 + - - +
116B VAL* 6.3 1.0 - - - +
117B ASP* 4.5 10.9 + - - +
124B CYS* 1.3 83.4 - - - +
126B ALA* 1.3 62.2 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ALA 126 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
27B GLU* 3.2 7.4 - - - +
28B VAL* 2.8 38.8 + - + +
30B VAL* 4.7 2.2 - - + -
85B ILE* 3.9 28.5 - - + -
89B TYR* 3.4 11.0 - - - -
125B ARG* 1.3 75.7 - - - +
127B ALA* 1.3 60.2 + - - +
131B VAL* 3.7 25.8 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with ALA 127 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
26B GLY 4.0 6.5 - - - +
27B GLU* 4.5 4.7 - - - +
85B ILE* 5.7 0.2 - - - +
89B TYR* 3.6 38.7 + - + +
90B SER* 4.1 10.8 - - - -
126B ALA* 1.3 71.3 - - - +
128B ALA* 1.3 54.6 + - - +
129B ASP* 3.3 1.8 - - + +
130B TYR* 2.8 34.3 + - + +
131B VAL* 3.3 11.6 + - - +
----------------------------------------------------------
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