Contacts of the helix formed by residues 501 - 506 (chain D) in PDB entry 2FRV
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 ALA 501 (chain D).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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277D THR* 4.0 8.0 - - + +
366D ALA* 5.0 3.5 - - + +
367D PHE 3.8 22.3 + - - +
368D GLU* 4.1 15.0 - - + +
488D TRP 4.4 3.0 + - - -
489D ASN* 3.6 8.8 + - - +
500D SER* 1.3 73.6 - - - +
502D VAL* 1.3 56.7 + - - +
504D GLN* 3.8 4.2 - - - -
505D ALA 2.9 23.4 + - - -
527D TYR* 3.1 32.3 + - + +
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Residues in contact with VAL 502 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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23D ILE* 5.1 2.0 - - + -
37D SER* 3.7 32.8 - - - +
489D ASN 2.9 24.2 + - - +
490D LEU* 3.9 18.8 - - + -
500D SER* 3.8 3.4 - - - +
501D ALA* 1.3 70.9 - - - +
503D GLU* 1.3 71.7 + - - +
505D ALA* 3.2 3.1 + - - +
506D LEU* 3.0 28.0 + - + +
523D THR* 4.9 1.6 - - + -
524D VAL* 4.2 28.3 - - + +
527D TYR* 4.1 25.5 - - + -
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Residues in contact with GLU 503 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
35D ALA* 3.6 20.4 - - - +
36D TRP* 3.5 1.0 - - - +
37D SER* 2.9 35.7 + - - +
354D TYR* 2.7 32.8 + - - -
491D GLY 4.0 2.9 - - - -
492D PRO* 3.8 1.6 - - - +
493D ARG* 3.9 13.2 + - - +
499D LEU* 3.7 21.5 - - + -
500D SER* 3.2 32.5 + - - +
502D VAL* 1.3 80.6 - - - +
504D GLN* 1.3 61.9 + - - +
506D LEU* 3.0 15.9 + - + +
507D ILE* 3.2 17.5 - - - +
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Residues in contact with GLN 504 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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276D LYS 4.3 13.5 - - - +
277D THR* 5.4 5.6 - - + -
499D LEU* 4.0 30.4 - - + +
500D SER 3.1 16.5 + - - +
501D ALA* 4.0 5.4 - - - +
503D GLU* 1.3 74.2 - - - +
505D ALA* 1.3 64.4 + - - +
506D LEU 3.2 0.7 + - - -
507D ILE* 3.4 26.8 + - - +
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Residues in contact with ALA 505 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
275D GLY* 3.2 41.0 - - - +
276D LYS 4.4 4.0 - - - +
277D THR* 4.4 1.7 - - + +
501D ALA 2.9 19.5 + - - +
502D VAL 3.5 4.7 - - - +
504D GLN* 1.3 78.0 - - - +
506D LEU* 1.3 62.3 + - - +
507D ILE 3.9 3.8 - - - +
509D THR* 3.7 5.7 + - - -
523D THR* 3.6 22.1 - - + +
527D TYR* 3.5 17.0 - - + +
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Residues in contact with LEU 506 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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23D ILE* 3.9 35.0 - - + -
25D VAL* 4.0 5.2 - - + -
32D ILE* 3.1 31.7 - - + +
35D ALA* 3.8 24.9 - - + -
36D TRP 5.6 0.7 - - - +
502D VAL* 3.0 19.9 + - + +
503D GLU* 3.0 12.0 + - + +
505D ALA* 1.3 76.1 - - - +
507D ILE* 1.3 63.9 - - - +
509D THR* 2.7 24.2 + - - +
520D ILE* 4.3 15.5 - - + +
523D THR* 3.9 27.1 - - + -
524D VAL* 4.6 3.4 - - + -
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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