Contacts of the strand formed by residues 136 - 140 (chain A) in PDB entry 3N7T
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 VAL 136 (chain A).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
103A GLY 3.4 7.3 + - - +
104A LEU* 3.3 8.8 - - + +
105A MET 3.0 23.6 + - - +
130A ILE* 3.8 1.8 - - - +
135A GLY* 1.3 78.8 - - - +
137A ILE* 1.3 70.2 + - - +
138A GLY 4.2 0.4 - - - -
216A ARG* 3.5 14.6 - - + +
218A VAL* 4.5 3.4 - - + -
233A THR* 3.6 33.2 - - + +
236A VAL* 3.6 22.2 - - + -
237A TYR* 3.8 17.7 - - + +
240A ILE* 3.6 24.7 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with ILE 137 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
105A MET* 3.4 14.6 - - + +
107A VAL* 4.3 13.9 - - + -
127A ALA* 3.8 36.3 - - + +
130A ILE* 5.0 2.7 - - + -
131A TYR* 4.0 22.9 - - + -
136A VAL* 1.3 81.7 - - - +
138A GLY* 1.3 70.2 + - - +
139A ALA* 5.2 0.2 - - + -
147A LEU* 4.0 20.2 - - + -
150A ILE* 4.1 19.3 - - + -
158A VAL* 4.7 1.1 - - + -
216A ARG 3.0 6.9 + - - +
217A ILE* 3.5 18.7 - - + +
218A VAL* 2.9 24.8 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLY 138 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
105A MET 2.9 10.7 + - - +
106A PHE* 3.4 10.2 - - - -
107A VAL* 2.8 33.8 + - - +
137A ILE* 1.3 74.3 - - - +
139A ALA* 1.3 55.5 + - - +
218A VAL 3.2 7.6 - - - -
229A THR* 4.8 0.2 - - - -
233A THR* 3.4 26.7 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ALA 139 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
106A PHE* 4.9 0.7 - - - -
107A VAL* 3.3 23.3 - - + -
138A GLY* 1.3 75.0 - - - +
140A VAL* 1.3 62.2 + - - +
143A GLY 4.0 1.3 - - - +
144A PRO* 3.9 28.5 - - + +
147A LEU* 4.3 15.3 - - + -
218A VAL 2.9 11.3 + - - +
219A THR* 3.1 8.0 - - + +
220A GLY 3.0 20.6 + - - -
229A THR* 4.1 5.2 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with VAL 140 (chain A).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
32A GLU* 3.9 26.2 - - + +
106A PHE* 3.8 28.9 - - + -
107A VAL 3.0 11.7 + - - +
109A GLY* 3.5 6.9 + - - +
139A ALA* 1.3 73.6 - - - +
141A CYS* 1.4 62.8 + - + +
143A GLY* 2.9 25.1 + - - -
144A PRO* 3.8 1.1 - - - -
220A GLY* 3.7 8.7 - - - +
222A ASN 3.4 26.5 - - - +
226A ALA* 3.9 19.1 - - + +
229A THR* 3.9 13.5 - - - +
----------------------------------------------------------
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