Contacts of the helix formed by residues 762 - 769 (chain B) in PDB entry 4BIC
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 762 (chain B).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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760B GLY 3.9 0.6 + - - -
761B SER* 1.3 69.8 - - - +
763B SER* 1.3 53.0 + - - +
765B LEU* 3.3 4.4 + - - +
766B LEU* 2.7 57.1 + - + +
770B TRP* 3.8 16.8 - - + -
773B LEU* 5.0 0.9 - - + -
783B TYR* 5.5 2.2 - - + -
787B ILE* 4.6 1.3 - - + -
806B GLY* 3.2 11.6 + - - +
809B VAL* 2.9 32.1 + - + -
811B ILE* 3.7 25.7 - - + +
818B LEU* 5.3 1.8 - - + -
870B THR* 3.9 18.2 - - + -
873B GLU* 5.6 0.4 - - - +
874B MET* 3.8 41.3 - - + -
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Residues in contact with SER 763 (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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761B SER* 3.1 9.5 + - - -
762B LEU* 1.3 77.6 - - - +
764B ALA* 1.4 53.6 + - - +
766B LEU* 3.3 6.7 + - - +
767B ARG* 2.9 38.8 + - - +
806B GLY* 3.4 3.0 + - - -
807B ASP* 2.6 36.2 + - - -
873B GLU* 3.2 25.1 - - - -
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Residues in contact with ALA 764 (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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760B GLY* 5.4 2.2 - - - -
761B SER* 3.1 23.6 + - - +
763B SER* 1.4 76.2 + - - +
765B LEU* 1.3 61.0 + - - +
767B ARG* 3.3 26.8 + - - +
768B SER* 2.9 37.0 + - - +
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Residues in contact with LEU 765 (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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759B GLY 5.5 0.7 - - - -
760B GLY* 3.6 24.5 - - - +
761B SER 2.9 21.0 + - - +
762B LEU 3.6 4.7 - - - +
764B ALA* 1.3 75.2 - - - +
766B LEU* 1.4 55.4 + - - +
769B LYS* 3.0 26.4 + - + +
770B TRP* 2.9 64.2 + - + +
811B ILE* 3.8 24.0 - - + -
813B THR* 3.6 26.2 - - + -
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Residues in contact with LEU 766 (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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762B LEU* 2.7 47.1 + - + +
763B SER* 3.3 4.9 + - - +
765B LEU* 1.4 71.9 - - - +
767B ARG* 1.3 61.0 - - - +
770B TRP* 4.4 5.8 - - + -
771B GLY* 2.8 44.4 + - - +
773B LEU* 3.6 24.5 - - + -
873B GLU* 3.5 37.2 - - + +
874B MET* 3.6 30.1 - - + +
877B GLY* 4.6 15.3 - - - +
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Residues in contact with ARG 767 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
763B SER* 2.9 21.6 + - - +
764B ALA* 3.3 31.4 + - - +
766B LEU* 1.3 75.5 - - - +
768B SER* 1.3 80.0 + - - +
771B GLY* 5.2 1.6 + - - -
877B GLY 5.3 4.9 + - - +
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Residues in contact with SER 768 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
764B ALA* 2.9 17.2 + - - +
767B ARG* 1.3 102.8 + - - +
769B LYS* 1.3 69.4 + - - +
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Residues in contact with LYS 769 (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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765B LEU* 3.0 22.7 + - + +
767B ARG 3.8 0.2 - - - -
768B SER* 1.3 88.8 - - - +
770B TRP* 1.3 75.7 + - + +
771B GLY 3.7 1.1 - - - -
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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