Contacts of the strand formed by residues 240 - 242 (chain B) in PDB entry 3EXG
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 THR 240 (chain B).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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144B VAL 3.7 5.6 - - - +
145B VAL* 3.5 14.4 - - + +
156B LEU* 4.7 2.1 - - - +
194B PRO 4.8 0.2 + - - -
195B ILE* 3.7 7.2 - - + -
196B GLY* 2.8 33.9 + - - +
197B LYS 4.3 1.6 + - - -
238B MET* 2.6 26.6 + - - +
239B ARG* 1.3 75.8 - - - +
241B ILE* 1.3 64.5 + - - +
242B ARG 3.3 31.6 - - - +
243B PRO* 3.4 16.6 - - + +
244B MET* 3.8 15.2 - - - +
245B ASP 4.9 1.0 + - - -
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Residues in contact with ILE 241 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
133B ALA* 3.7 33.9 - - + +
137B GLY* 4.3 4.3 - - - -
144B VAL* 2.6 31.1 + - + +
146B SER* 3.9 21.3 - - - -
170B LEU* 4.7 0.2 - - + -
212B HIS* 3.8 37.5 - - + +
238B MET* 4.6 7.4 - - - -
239B ARG 5.3 0.2 - - - +
240B THR* 1.3 78.3 - - - +
242B ARG* 1.3 57.7 + - - +
244B MET* 3.7 25.9 + - + +
271B VAL* 4.8 5.8 - - + -
268D GLN* 5.5 0.5 - - - +
269D PHE* 3.8 25.8 - - + -
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Residues in contact with ARG 242 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
340A TYR* 3.8 14.8 + - - +
137B GLY* 2.8 40.0 + - - +
138B HIS 3.6 11.9 + - - -
139B CYS 3.3 13.6 + - - -
140B PRO* 3.2 26.9 - - - +
142B LEU* 3.5 17.5 - - - +
143B LYS* 3.3 7.4 - - - +
144B VAL 2.9 28.5 + - - +
240B THR* 3.3 7.6 - - - +
241B ILE* 1.3 81.8 - - - +
243B PRO* 1.3 69.4 - - + +
244B MET 3.7 0.2 - - - +
268D GLN* 3.0 29.1 - - - +
269D PHE* 5.4 0.2 - - + -
299D ASP* 2.9 30.3 + - - -
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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) + - + + + + + -
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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