Contacts of the helix formed by residues 728 - 735 (chain A) in PDB entry 3BK0
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 ALA 728 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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726A TRP 4.1 0.4 + - - -
727A THR* 1.3 79.6 - - - +
729A PRO* 1.3 75.9 - - + +
730A GLU* 3.3 25.4 - - - +
731A ALA* 3.2 11.4 + - + +
732A LEU* 3.2 11.3 + - - +
741A SER* 3.6 19.3 + - - -
744A TRP* 3.6 17.6 - - + +
804A ARG* 3.6 12.6 - - - +
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Residues in contact with PRO 729 (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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728A ALA* 1.3 87.3 - - + +
730A GLU* 1.3 62.1 + - - +
732A LEU* 3.3 3.1 + - + +
733A ASN* 2.8 38.7 + - - +
744A TRP* 3.5 25.8 - - + -
773A VAL* 4.2 3.8 - - + -
774A GLU* 3.7 22.7 - - - +
799A TYR* 3.7 29.6 - - + +
804A ARG* 4.4 2.2 - - - +
824A EDO 3.4 25.3 - - - +
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Residues in contact with GLU 730 (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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728A ALA* 3.5 12.9 - - - +
729A PRO* 1.3 72.3 - - - +
731A ALA* 1.3 59.0 + - - +
733A ASN* 4.7 1.1 - - - +
734A TYR* 2.9 44.0 + - + +
736A ARG* 3.2 37.3 + - + +
738A SER* 4.8 1.7 + - - -
741A SER* 3.8 10.7 + - - -
799A TYR* 4.0 4.8 - - - +
801A PRO* 3.7 25.1 - - + +
804A ARG* 2.8 45.6 + - - -
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Residues in contact with ALA 731 (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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715A ALA* 5.3 0.2 - - - +
727A THR* 3.5 17.7 - - + -
728A ALA 3.2 10.4 + - - +
730A GLU* 1.3 80.6 - - - +
732A LEU* 1.3 60.6 + - - +
735A GLY* 3.0 24.1 + - - -
736A ARG 3.3 21.5 - - - +
737A TYR* 3.6 29.4 + - + -
741A SER* 4.2 10.5 - - - -
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Residues in contact with LEU 732 (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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722A VAL* 3.6 26.9 - - + -
724A VAL* 3.7 37.7 - - + +
727A THR* 3.6 24.9 - - + +
728A ALA 3.2 4.4 + - - +
729A PRO* 3.8 5.4 - - + +
731A ALA* 1.3 80.3 - - - +
733A ASN* 1.3 64.7 + - - +
735A GLY 4.4 1.0 + - - -
737A TYR* 4.5 2.7 - - - +
770A ARG* 3.6 36.5 + - + +
824A EDO 3.8 23.1 - - - -
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Residues in contact with ASN 733 (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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729A PRO* 2.8 30.6 + - - +
730A GLU* 4.4 0.4 - - - +
732A LEU* 1.3 74.1 - - - +
734A TYR* 1.3 96.0 + - + +
770A ARG* 3.0 24.7 + - - +
774A GLU* 3.0 30.6 + - - +
799A TYR* 3.6 12.3 + - - -
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Residues in contact with TYR 734 (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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714A ALA* 6.0 0.9 - - - +
730A GLU* 2.9 22.7 + - + +
733A ASN* 1.3 109.1 + - + +
735A GLY* 1.3 64.7 + - - +
736A ARG* 3.2 7.9 + - + +
799A TYR* 5.5 3.4 + - - -
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Residues in contact with GLY 735 (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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713A TYR 3.1 8.1 - - - +
714A ALA* 3.4 4.2 - - - -
715A ALA* 2.9 43.0 + - - -
731A ALA 3.0 19.9 + - - -
732A LEU 4.4 1.2 + - - -
733A ASN 3.8 0.6 - - - -
734A TYR* 1.3 78.0 - - - +
736A ARG* 1.3 59.0 + - - +
737A TYR* 3.3 4.2 + - - -
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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