Contacts of the helix formed by residues 423 - 430 (chain J) in PDB entry 2QJK
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 423 (chain J).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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225J THR* 5.6 0.2 - - - -
227J VAL* 4.4 8.1 - - - -
228J GLU 5.6 0.4 - - - -
230J ARG* 3.6 42.5 + - + +
240J ASP* 3.8 2.5 - - - -
421J PRO* 3.3 9.1 - - - +
422J ALA* 1.3 92.8 - - + +
424J ILE* 1.3 63.9 + - - +
425J GLU* 3.3 5.1 + - - +
426J GLU* 2.7 46.7 + - + +
427J ASP* 3.3 5.2 + - - +
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Residues in contact with ILE 424 (chain J).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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38J PRO* 4.2 7.4 - - + -
40J ASN* 3.1 42.4 - - + +
223J ASN* 3.5 10.8 - - - +
225J THR* 4.9 2.9 - - - -
227J VAL* 3.1 19.1 - - + +
228J GLU 3.0 34.5 - - - +
229J VAL* 3.4 24.0 - - + -
240J ASP* 3.2 21.4 + - + +
423J THR* 1.3 70.2 - - - +
425J GLU* 1.3 67.1 + - - +
427J ASP* 3.1 7.9 + - - +
428J PHE* 2.8 25.2 + - + +
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Residues in contact with GLU 425 (chain J).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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39J ARG* 5.3 0.2 - - - +
230J ARG* 3.0 24.7 + - - +
239J LYS* 3.0 54.6 + - - +
240J ASP* 2.9 7.6 + - - +
423J THR* 3.5 7.4 - - - +
424J ILE* 1.3 75.3 - - - +
426J GLU* 1.3 61.1 + - - +
428J PHE* 3.0 9.7 + - + +
429J ASN* 2.5 52.6 + - - +
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Residues in contact with GLU 426 (chain J).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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421J PRO* 3.2 23.7 - - - +
422J ALA* 2.7 35.0 + - - +
423J THR* 2.7 25.8 + - + +
425J GLU* 1.3 75.5 - - - +
427J ASP* 1.3 61.8 + - - +
429J ASN* 3.6 9.2 + - - +
430J ALA* 3.3 17.7 + - - +
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Residues in contact with ASP 427 (chain J).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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40J ASN* 3.9 15.7 - - - +
225J THR* 3.4 25.8 - - + +
358J ARG* 3.4 24.1 + - - -
359J TYR* 4.1 5.4 + - - -
421J PRO* 4.6 12.8 - - + +
423J THR 3.3 6.3 + - - +
424J ILE* 3.1 8.5 + - - +
426J GLU* 1.3 77.5 - - - +
428J PHE* 1.3 69.6 + - - +
430J ALA* 2.9 27.2 - - - +
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Residues in contact with PHE 428 (chain J).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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39J ARG* 3.0 78.3 - - + -
40J ASN* 4.1 9.8 - - - +
239J LYS 5.3 0.4 - - - -
424J ILE 2.8 16.9 + - - +
425J GLU* 3.3 12.1 - - + +
427J ASP* 1.3 77.4 + - - +
429J ASN* 1.3 74.4 + - - +
430J ALA 3.0 8.3 - - - +
252K TRP* 5.0 9.6 - + - -
255K VAL* 4.2 9.9 - - + -
256K LYS* 3.1 64.8 + - + -
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Residues in contact with ASN 429 (chain J).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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425J GLU* 2.5 60.1 + - - +
426J GLU* 3.7 8.8 - - - +
428J PHE* 1.3 80.7 - - - +
430J ALA* 1.3 64.6 + - - +
256K LYS* 3.4 10.7 + - - +
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Residues in contact with ALA 430 (chain J).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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426J GLU 3.3 8.9 + - - +
427J ASP* 2.9 23.6 + - - +
428J PHE 3.0 12.3 - - - +
429J ASN* 1.3 82.8 - - - +
256K LYS* 3.5 11.7 + - - -
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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