Contacts of the strand formed by residues 237 - 242 (chain A) in PDB entry 2CND
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 237 (chain A).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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138A ARG* 2.9 37.2 + - - +
231A PRO* 3.7 10.3 - - + -
232A GLU 3.1 18.8 - - - +
233A GLY 2.7 24.9 + - - -
234A GLY 3.7 3.2 - - - +
235A ASP 3.1 4.6 + - - -
236A ASP* 1.3 78.8 - - - +
238A LEU* 1.3 60.4 + - - +
261A TYR* 3.4 26.7 - - + +
266A SER* 3.0 18.6 + - - -
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Residues in contact with LEU 238 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
127A PHE* 3.9 41.3 - - + -
129A ILE* 4.9 8.3 - - + -
134A ARG* 5.1 10.8 - - + +
135A ASN 5.4 0.9 - - - +
136A ALA* 3.7 18.0 - - + +
138A ARG 3.0 5.9 + - - +
139A LEU* 3.4 17.2 - - + +
140A ALA* 2.9 25.3 + - - +
237A THR* 1.3 75.2 - - - +
239A ALA* 1.3 73.2 + - - +
240A LEU* 4.2 7.9 - - + -
261A TYR* 4.6 0.9 - - - -
265A ASN 4.5 5.2 - - - +
266A SER* 3.7 25.8 - - - +
268A VAL* 4.7 11.7 - - + -
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Residues in contact with ALA 239 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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140A ALA* 3.3 17.9 - - + +
142A ILE* 4.9 0.7 - - + -
238A LEU* 1.3 76.1 - - - +
240A LEU* 1.3 61.9 + - - +
256A LEU* 4.1 24.0 - - + -
261A TYR* 4.2 13.5 - - + -
266A SER 2.9 18.2 + - - +
267A PHE* 4.2 6.7 - - + -
268A VAL* 2.9 29.3 + - - +
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Residues in contact with LEU 240 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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119A VAL* 4.7 2.7 - - + -
127A PHE* 4.2 11.2 - - + -
139A LEU* 3.5 33.7 - - + -
140A ALA 2.7 22.5 + - - +
141A MET* 3.4 14.5 - - + -
142A ILE* 3.1 16.7 + - - +
151A MET* 3.6 15.9 - - + +
154A ILE* 3.6 20.9 - - + -
238A LEU* 4.2 5.8 - - + -
239A ALA* 1.3 76.6 - - - +
241A ALA* 1.3 62.8 + - - +
268A VAL* 3.4 20.2 - - + -
270A PHE* 3.6 30.1 - - + -
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Residues in contact with ALA 241 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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142A ILE* 3.1 23.3 - - + +
151A MET* 3.5 3.1 - - - +
240A LEU* 1.3 76.8 - - - +
242A CYS* 1.3 60.6 + - - +
243A GLY 4.1 0.4 - - - -
248A ILE* 4.1 16.2 - - + -
252A ILE* 4.8 4.9 - - + -
267A PHE* 3.7 25.1 - - + -
268A VAL 2.7 9.1 + - - +
269A VAL* 2.9 30.5 - - - +
270A PHE* 3.0 3.0 + - - -
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Residues in contact with CYS 242 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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142A ILE 3.3 5.3 + - - -
143A CYS* 3.1 24.6 - - - +
144A GLY 3.3 2.6 + - - -
147A GLY* 3.3 39.1 - - - +
150A PRO* 3.8 10.3 - - + -
151A MET* 3.3 8.7 - - + +
241A ALA* 1.3 74.9 - - - +
243A GLY* 1.3 58.0 + - - +
248A ILE* 4.1 1.1 - - - -
269A VAL* 5.5 0.2 - - - -
270A PHE* 3.5 41.7 - - + -
271A FAD 4.9 11.0 - - - -
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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
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Atomic class I II III IV V VI VII VIII
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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