Contacts of the strand formed by residues 160 - 163 (chain M) in PDB entry 2I2X
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 LEU 160 (chain M).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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28M ALA* 3.7 25.8 - - + -
34M ILE* 4.2 13.2 - - + -
82M ILE* 4.8 12.8 - - + -
121M ALA* 4.9 4.0 - - + -
122M LEU 2.9 12.1 + - - +
123M ARG* 3.5 28.7 - - + +
124M HIS 3.0 26.9 + - - +
158M ALA* 4.3 0.7 - - - +
159M ASP* 1.3 91.3 - - + +
161M LEU* 1.3 68.7 + - - +
162M SER 4.2 0.2 - - - -
213M ILE* 3.6 16.6 - - + -
215M ALA* 3.9 9.6 - - + -
265M PRO* 3.7 28.5 - - + -
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Residues in contact with LEU 161 (chain M).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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124M HIS* 3.6 4.9 - - + +
126M ILE* 5.1 1.8 - - + -
150M PHE* 4.0 30.5 - - + +
153M CYS* 4.9 3.1 - - + -
154M ALA* 4.1 21.3 - - + +
158M ALA* 4.1 21.8 - - + +
160M LEU* 1.3 81.6 - - - +
162M SER* 1.3 64.6 + - - +
200M TRP* 3.7 7.0 - - - -
203M ILE* 4.5 9.0 - - + +
206M ILE* 4.6 8.1 - - + -
207M ALA* 4.0 23.3 - - + +
212M THR* 3.4 22.7 - - - +
213M ILE 3.0 10.6 + - - +
214M SER* 4.9 0.2 - - - -
215M ALA 3.1 20.4 + - - -
216M GLY 3.6 2.3 + - - -
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Residues in contact with SER 162 (chain M).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
123M ARG* 3.4 26.4 + - - -
124M HIS 3.1 7.1 + - - +
125M THR* 3.2 21.3 - - - -
126M ILE 2.9 23.2 + - - -
150M PHE* 3.5 8.7 - - - -
161M LEU* 1.3 76.1 + - - +
163M VAL* 1.3 65.0 + - - +
200M TRP* 4.1 2.5 - - - -
215M ALA* 3.6 0.7 - - - +
216M GLY 2.9 22.8 + - - -
267M LYS* 3.7 11.4 - - - -
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Residues in contact with VAL 163 (chain M).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
125M THR* 3.9 4.0 - - - -
126M ILE 3.3 20.4 - - - +
128M ASP* 3.9 11.9 - - + +
146M PHE* 3.9 21.5 - - + -
150M PHE* 3.8 7.4 - - + -
162M SER* 1.3 78.8 - - - +
164M GLU* 1.3 74.7 + - - +
165M SER* 4.0 2.0 - - - +
199M ILE* 4.2 8.3 - - + -
200M TRP* 3.7 13.9 - - + -
203M ILE* 3.9 15.3 - - + -
216M GLY 3.7 1.8 + - - +
217M ASP* 3.0 46.1 - - - +
218M THR* 3.9 1.0 + - - -
267M LYS* 5.1 0.4 - - - -
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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