Contacts of the helix formed by residues 482 - 488 (chain A) in PDB entry 4Z1F
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 SER 482 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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466A LYS* 4.1 8.7 - - - -
468A LEU 3.4 9.2 - - - -
469A ARG* 3.2 28.8 + - - +
470A TYR* 6.6 0.4 - - - -
481A THR* 1.3 76.0 + - - +
483A LEU* 1.3 61.6 + - - +
484A SER* 3.4 19.1 + - - -
485A GLU* 2.5 32.6 + - - +
486A TYR* 3.0 27.4 + - - +
525A LEU* 5.4 3.1 - - - +
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Residues in contact with LEU 483 (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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465A ALA* 3.6 40.1 + - + +
466A LYS* 5.8 0.6 - - - +
468A LEU* 4.5 9.4 + - + -
470A TYR* 5.0 6.5 - - + -
482A SER* 1.3 75.5 - - - +
484A SER* 1.3 58.5 + - - +
486A TYR* 3.2 11.1 - - - +
487A ALA* 2.9 26.9 + - - +
497A ILE* 4.8 6.6 - - + +
525A LEU* 3.9 25.1 - - + -
536A LEU* 4.3 9.2 - - + -
539A LEU* 3.9 11.9 - - + -
542A PHE* 3.6 36.4 - - + -
547A LEU* 4.3 18.6 - - + -
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Residues in contact with SER 484 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
466A LYS* 5.2 9.7 + - - +
482A SER* 3.4 12.0 + - - -
483A LEU* 1.3 74.1 - - - +
485A GLU* 1.3 66.5 + - - +
487A ALA* 3.0 9.6 + - - +
488A SER* 2.9 24.5 + - - -
542A PHE* 3.9 17.6 - - - -
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Residues in contact with GLU 485 (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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431A LYS* 5.9 4.6 - - - +
469A ARG* 3.8 10.9 + - - -
480A LEU 4.9 1.2 - - - +
481A THR* 3.4 18.7 - - + +
482A SER* 2.5 46.2 + - - +
484A SER* 1.3 79.2 + - - +
486A TYR* 1.3 61.8 + - - +
488A SER* 2.6 25.2 + - - -
489A ARG* 2.8 27.2 + - - +
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Residues in contact with TYR 486 (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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482A SER 3.0 13.6 + - - +
483A LEU* 3.2 13.5 - - - +
485A GLU* 1.3 75.8 - - - +
487A ALA* 1.3 67.1 - - - +
489A ARG* 3.1 21.8 + - - +
490A MET* 3.1 29.9 + - + +
496A ASN 4.0 5.3 + - - -
497A ILE* 3.5 36.8 - - + -
498A TYR* 3.4 26.9 + - - -
522A THR* 4.6 1.9 - - - +
523A GLU* 2.6 70.1 + - + +
524A VAL* 4.3 0.7 - - - -
525A LEU* 3.7 25.8 - - + -
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Residues in contact with ALA 487 (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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483A LEU 2.9 14.1 + - - +
484A SER* 3.0 12.7 + - - +
486A TYR* 1.3 77.3 - - + +
488A SER* 1.3 57.6 + - - +
489A ARG 3.1 0.7 - - - -
490A MET* 3.1 51.5 + - + +
497A ILE* 5.8 2.2 - - + -
542A PHE* 6.0 2.9 - - + -
543A ASP* 5.4 1.8 - - - +
545A LYS* 4.3 16.8 - - + +
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Residues in contact with SER 488 (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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484A SER 2.9 10.8 + - - -
485A GLU* 2.6 27.2 + - - -
487A ALA* 1.3 76.0 - - - +
489A ARG* 1.3 64.0 + - - +
490A MET 5.1 0.4 - - - -
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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