Contacts of the helix formed by residues 823 - 828 (chain A) in PDB entry 1QWN
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 PRO 823 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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412A ASP* 4.4 9.2 - - + +
414A TYR* 3.7 27.6 - - + +
718A ARG* 5.7 1.3 - - - +
821A LYS 4.6 1.3 - - - +
822A LEU* 1.3 95.2 - - + +
824A LEU* 1.3 67.6 + - - +
825A GLN* 3.2 29.8 - - - +
826A ALA* 2.9 16.1 + - - +
827A ASN* 3.4 5.2 + - - -
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Residues in contact with LEU 824 (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 TYR* 3.9 36.8 - - + +
729A PHE* 3.9 20.9 - - + -
731A PRO* 4.2 7.6 - - + -
733A GLY* 4.3 4.5 - - - +
734A PRO* 4.0 26.5 - - + -
822A LEU 3.9 0.2 + - - -
823A PRO* 1.3 72.2 - - - +
825A GLN* 1.3 64.2 + - - +
827A ASN* 2.9 31.0 + - - +
828A TYR* 3.6 9.0 + - + -
857A LEU* 3.9 24.7 - - + +
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Residues in contact with GLN 825 (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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406A THR* 4.3 0.5 - - - +
412A ASP* 3.0 25.6 + - - +
414A TYR* 3.7 18.9 - - + +
416A SER* 2.9 24.3 + - - +
718A ARG* 3.8 12.5 + - - +
729A PHE* 2.9 49.8 - - + +
730A LEU* 3.8 10.5 - - - +
731A PRO* 3.6 16.4 - - + +
823A PRO* 3.6 28.1 - - - +
824A LEU* 1.3 76.0 + - - +
826A ALA* 1.4 61.5 + - - +
827A ASN 3.2 0.2 - - - -
828A TYR* 3.5 10.3 + - - +
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Residues in contact with ALA 826 (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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49A TYR* 6.1 0.7 - - - -
406A THR* 4.1 7.8 + - - -
414A TYR* 3.3 46.2 - - + -
822A LEU* 3.7 25.2 - - + +
823A PRO* 2.9 13.4 + - + +
825A GLN* 1.4 80.7 - - - +
827A ASN* 1.3 60.7 + - - +
828A TYR 3.2 7.4 + - - +
829A TYR* 4.0 13.5 + - - -
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Residues in contact with ASN 827 (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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804A PHE* 3.7 2.6 - - + -
817A ARG 4.2 2.3 - - - +
818A ARG* 3.5 17.3 - - + +
819A LEU* 2.9 50.5 + - - +
820A ASP* 5.1 1.0 + - - +
822A LEU* 3.6 7.9 + - - +
823A PRO 3.4 19.8 + - - -
824A LEU* 2.9 12.8 + - - +
826A ALA* 1.3 76.2 - - - +
828A TYR* 1.3 58.0 - - - +
829A TYR* 3.3 22.9 + - + -
855A SER* 2.7 32.1 + - - +
857A LEU* 4.1 9.5 - - + +
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Residues in contact with TYR 828 (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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406A THR* 2.6 30.7 + - - -
416A SER* 3.7 16.4 - - - +
419A TYR* 3.6 3.6 - - + -
420A THR* 5.6 0.4 - - - -
715A TYR* 4.2 5.2 - - - -
729A PHE* 3.9 23.1 - + - -
791A VAL* 3.5 14.7 - - - +
824A LEU* 3.6 12.8 + - + -
825A GLN 3.5 13.5 + - - +
826A ALA 3.2 1.5 - - - +
827A ASN* 1.3 80.2 - - - +
829A TYR* 1.3 55.3 + - - +
853A GLY* 3.7 14.6 - - - -
854A GLY* 3.3 30.7 - - - -
855A SER* 3.7 16.6 - - - -
857A LEU* 4.5 1.3 - - + -
863A GLU* 2.7 33.6 + - - +
865A MET* 3.6 28.7 + - + +
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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