Contacts of the helix formed by residues 1887 - 1896 (chain B) in PDB entry 4ASI
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 GLY1887 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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1884B ILE* 3.9 9.5 - - - +
1886B THR* 1.3 79.9 - - - +
1888B ALA* 1.3 68.8 + - - -
1889B GLY 3.1 3.4 - - - -
1890B ALA* 3.0 17.0 + - - +
1891B LEU* 3.1 11.3 + - - +
1903B ASN* 3.5 11.4 - - - -
1906B LEU* 4.0 0.9 - - - -
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Residues in contact with ALA1888 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1887B GLY* 1.3 71.3 - - - -
1889B GLY* 1.3 63.6 + - - +
1891B LEU* 3.4 2.6 + - - +
1892B ASN* 2.9 35.1 + - - +
1900B TYR* 3.9 23.6 - - + +
1901B THR 4.8 1.6 - - - -
1902B SER* 4.2 7.9 - - - +
1903B ASN* 2.9 30.9 + - - +
1906B LEU* 3.7 14.9 - - + +
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Residues in contact with GLY1889 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1887B GLY* 3.1 1.4 - - - -
1888B ALA* 1.3 79.3 - - - +
1890B ALA* 1.3 62.8 + - - +
1892B ASN* 3.1 9.1 + - - +
1893B LYS* 3.0 23.1 + - - +
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Residues in contact with ALA1890 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1886B THR* 3.2 26.2 - - + -
1887B GLY* 3.0 6.5 + - - +
1889B GLY* 1.3 74.1 - - - +
1891B LEU* 1.3 62.2 + - - +
1893B LYS* 3.3 8.4 + - - +
1894B VAL* 3.2 27.6 + - + +
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Residues in contact with LEU1891 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1886B THR* 3.5 26.2 - - + +
1887B GLY 3.1 9.4 + - - +
1888B ALA 3.9 6.1 - - - +
1890B ALA* 1.3 73.8 - - - +
1892B ASN* 1.3 67.1 + - - +
1894B VAL* 3.3 12.7 + - + +
1895B LEU* 2.9 32.8 + - + +
1900B TYR* 4.0 25.1 - - + +
1906B LEU* 3.7 30.1 - - + -
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Residues in contact with ASN1892 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1888B ALA* 2.9 29.9 + - - +
1889B GLY* 3.6 6.5 - - - +
1891B LEU* 1.3 75.2 - - - +
1893B LYS* 1.3 62.8 + - - +
1895B LEU* 3.2 3.0 + - - +
1896B GLY* 3.0 18.9 + - - -
1897B ARG 3.2 21.3 + - - +
1898B GLU* 4.0 11.4 - - + +
1899B VAL* 3.1 14.6 + - - +
1900B TYR* 2.6 52.8 + - - -
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Residues in contact with LYS1893 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1889B GLY 3.0 11.5 + - - +
1890B ALA* 3.5 11.4 - - - +
1891B LEU 3.2 0.2 - - - -
1892B ASN* 1.3 75.6 - - - +
1894B VAL* 1.3 63.2 + - + +
1896B GLY* 3.2 13.0 + - - -
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Residues in contact with VAL1894 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1890B ALA* 3.2 16.7 + - + +
1891B LEU* 3.5 16.8 - - + +
1893B LYS* 1.3 76.3 - - + +
1895B LEU* 1.3 69.0 + - + +
1896B GLY 3.4 1.0 + - - -
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Residues in contact with LEU1895 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1891B LEU* 2.9 24.3 + - + +
1892B ASN 3.2 2.8 + - - +
1894B VAL* 1.3 86.4 - - + +
1896B GLY* 1.3 56.9 + - - +
1897B ARG* 3.1 16.0 + - - +
1899B VAL* 4.0 29.6 - - + -
1900B TYR* 4.1 24.5 - - + +
2039B ALA* 5.2 7.6 - - + -
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Residues in contact with GLY1896 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1892B ASN 3.0 6.4 + - - -
1893B LYS* 3.2 11.1 + - - -
1894B VAL 3.4 1.4 + - - -
1895B LEU* 1.3 77.7 - - - +
1897B ARG* 1.3 60.3 + - - +
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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
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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