Contacts of the helix formed by residues 298 - 303 (chain P) in PDB entry 1HI0
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 TYR 298 (chain P).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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133P LEU* 3.4 41.7 + - + +
293P LYS* 4.6 4.6 - - + -
294P ILE* 3.0 32.8 + - + +
297P LYS* 1.3 113.0 + - + +
299P ALA* 1.3 64.8 + - - +
300P TYR 3.0 4.9 + - - +
301P THR* 3.1 4.2 + - - -
302P PHE* 3.1 31.0 + - + +
437P ASP* 2.8 43.4 + - - -
440P TRP* 3.5 42.2 - + + -
441P GLN* 4.0 8.7 - - + -
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Residues in contact with ALA 299 (chain P).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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294P ILE 3.3 0.8 + - - -
295P TYR 3.1 23.8 - - - +
296P SER* 2.9 11.7 + - - +
297P LYS 3.4 1.6 + - - -
298P TYR* 1.3 76.7 - - - +
300P TYR* 1.3 63.4 + - - +
303P HIS* 3.1 30.4 + - + +
313P LYS* 2.8 15.5 + - - +
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Residues in contact with TYR 300 (chain P).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
298P TYR 3.0 2.0 + - - -
299P ALA* 1.3 76.5 - - - +
301P THR* 1.3 73.7 + - + +
313P LYS* 2.8 60.5 + - + +
316P GLU* 5.9 1.8 - - - -
317P TRP* 2.8 35.4 + + - -
440P TRP 3.7 1.3 - - - +
441P GLN* 3.5 25.3 - - - +
442P GLY* 3.4 22.4 - - - -
447P ARG* 3.2 33.7 + - + -
448P GLN 4.0 8.1 - - - -
449P ILE* 3.5 5.7 - - + +
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Residues in contact with THR 301 (chain P).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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298P TYR 3.1 2.9 + - - -
300P TYR* 1.3 91.0 - - + +
302P PHE* 1.3 74.6 + - - +
304P HIS* 3.0 6.8 + - - -
439P TYR* 4.1 4.9 - - + +
440P TRP* 3.0 45.4 + - - +
448P GLN* 2.7 44.0 - - + +
449P ILE* 4.0 0.7 - - - +
450P SER 2.7 31.2 + - - +
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Residues in contact with PHE 302 (chain P).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
134P MET* 4.5 3.8 - - + -
294P ILE* 3.7 36.3 - - + +
295P TYR* 3.5 26.0 - - + -
298P TYR* 3.1 19.9 + - + +
301P THR* 1.3 94.4 - - - +
303P HIS* 1.3 61.1 + - - +
304P HIS* 3.4 18.5 + - - -
403P THR* 3.4 31.4 - - + -
407P SER* 3.7 7.0 - - - -
440P TRP* 3.6 55.2 - + - -
448P GLN* 4.1 0.4 - - - -
450P SER* 3.8 24.2 - - - +
451P LYS* 5.3 3.1 - - - +
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Residues in contact with HIS 303 (chain P).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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295P TYR* 3.2 48.9 + + + +
299P ALA* 3.1 18.0 + - + +
302P PHE* 1.3 75.4 - - - +
304P HIS* 1.3 69.0 + - - +
305P THR* 3.4 25.4 - - + +
309P ASN* 3.4 7.8 + - - +
313P LYS* 3.4 14.2 + - - -
633P THR* 4.3 9.4 - - + +
635P ALA* 5.4 2.6 - - - +
636P ASP* 3.2 26.4 + - - -
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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