Contacts of the helix formed by residues 788 - 793 (chain A) in PDB entry 4BI0
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 HIS 788 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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763A ASP* 3.2 31.0 - - - -
766A ASP* 2.8 28.4 + - + -
767A VAL* 3.4 21.0 + - + +
770A CYS* 5.3 0.2 - - - -
780A ILE* 4.4 19.3 - - + -
784A GLU 3.4 9.6 + - - +
785A LEU* 3.3 19.4 + - + +
787A ALA* 1.4 78.7 - - - +
789A PRO* 1.4 82.2 - - + +
790A TYR* 2.9 29.7 + - + +
791A VAL* 3.1 14.8 + - + +
792A GLN* 3.3 10.5 + - - +
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Residues in contact with PRO 789 (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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625A LYS* 4.5 0.2 + - - -
763A ASP* 3.5 25.6 - - - +
787A ALA 4.3 3.4 - - - +
788A HIS* 1.4 98.3 - - + +
790A TYR* 1.4 57.3 + - - +
792A GLN* 4.4 1.6 - - + +
793A ILE* 2.9 61.9 + - + +
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Residues in contact with TYR 790 (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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621A PRO 4.3 0.9 + - - -
624A ARG* 3.6 18.0 + - - +
625A LYS* 3.0 77.9 + - + +
628A TRP* 3.5 41.1 - + + -
724A LEU* 4.2 2.5 - - + +
761A GLU* 3.8 17.5 - - - -
763A ASP* 3.8 12.9 + - + +
764A LEU* 3.6 47.1 - - + +
767A VAL* 3.6 16.2 - - + -
788A HIS* 2.9 20.9 + - + +
789A PRO* 1.4 74.9 - - - +
791A VAL* 1.3 58.0 + - + +
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Residues in contact with VAL 791 (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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625A LYS* 5.1 1.2 - - - +
628A TRP* 3.7 32.1 - - + +
629A LYS* 3.4 44.5 + - + +
632A LEU* 3.8 9.6 - - + -
785A LEU 3.5 20.9 - - - +
786A LEU* 3.9 15.9 - - + +
788A HIS* 3.1 8.4 + - + +
790A TYR* 1.3 80.7 - - + +
792A GLN* 1.4 76.5 + - - +
793A ILE 3.9 1.3 - - - +
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Residues in contact with GLN 792 (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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786A LEU* 2.6 28.7 + - - +
787A ALA* 4.1 12.6 - - - +
788A HIS 3.3 16.4 + - - +
789A PRO* 4.6 2.5 - - + +
791A VAL* 1.4 90.4 - - - +
793A ILE* 1.3 64.8 + - + +
794A GLN* 3.4 18.7 + - - -
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Residues in contact with ILE 793 (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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625A LYS* 3.1 27.0 + - - +
763A ASP* 4.7 7.9 - - - +
789A PRO* 2.9 49.9 + - + +
790A TYR 4.4 0.5 - - - +
791A VAL 5.1 0.5 - - - -
792A GLN* 1.3 78.8 + - + +
794A GLN* 1.4 70.7 + - - +
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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