Contacts of the helix formed by residues 403 - 406 (chain B) in PDB entry 1J5O
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 THR 403 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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24B TRP* 4.0 21.1 - - + +
26B LEU* 5.6 1.1 - - + +
30B LYS* 3.3 27.9 + - - +
61B PHE* 3.7 28.6 - - + -
62B ALA 5.6 0.3 - - - +
63B ILE* 5.6 4.5 - - - +
399B GLU 5.2 2.2 + - - +
400B THR 5.8 1.0 - - - -
401B TRP* 4.9 1.9 - - - -
402B TRP* 1.3 97.5 - - + +
404B GLU* 1.3 73.3 + - - +
405B TYR 2.7 13.2 + - - -
406B TRP* 3.1 14.5 + - - +
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Residues in contact with GLU 404 (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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27B THR* 4.2 20.0 - - - +
29B GLU* 5.3 5.0 - - - +
30B LYS* 4.7 7.8 - - - +
400B THR 5.1 1.8 - - - +
401B TRP* 3.5 26.9 - - + +
402B TRP 3.2 0.2 + - - -
403B THR* 1.3 89.1 + - - +
405B TYR* 1.3 88.2 + - + +
406B TRP 5.2 0.2 - - - -
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Residues in contact with TYR 405 (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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410A TRP* 3.8 13.5 - - - -
363B ASN* 3.2 23.7 + - - -
365B VAL* 5.6 1.3 - - + -
366B LYS* 3.4 51.8 - - + -
369B THR* 4.0 18.6 + - + +
370B GLU* 5.5 4.7 - - + +
373B GLN* 3.5 8.8 + - - -
401B TRP* 3.1 35.9 - + + -
402B TRP* 3.0 5.1 + - - +
403B THR 2.7 6.7 + - - -
404B GLU* 1.3 92.4 - - + +
406B TRP* 1.3 67.2 + - - +
407B GLN* 4.2 5.3 - - - +
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Residues in contact with TRP 406 (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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61B PHE* 5.0 4.5 - + + -
63B ILE* 4.1 7.4 - - + +
74B LEU* 4.1 16.5 - - + +
369B THR* 5.4 3.6 - - - -
372B VAL* 4.6 13.0 - - + -
373B GLN* 3.1 39.3 - - + +
398B TRP* 5.7 0.7 - + - -
402B TRP* 3.2 45.0 + + + -
403B THR* 3.1 14.4 + - - +
405B TYR* 1.3 83.2 - - - +
407B GLN* 1.3 87.0 + - - +
408B ALA* 2.8 43.1 + - + +
410B TRP* 2.6 36.8 + + - -
411B ILE* 3.8 8.6 - - + +
412B PRO* 3.3 25.8 - - + -
414B TRP* 4.7 5.6 - + - -
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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