Contacts of the helix formed by residues 497 - 503 (chain D) in PDB entry 4E2I
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 LEU 497 (chain D).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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450D VAL* 5.0 6.5 - - + -
457D LEU* 4.3 14.1 - - + -
461D LEU* 3.9 32.1 - - + -
472D PHE* 5.3 6.3 - - + -
493D ASN 3.2 20.2 - - - +
494D LEU* 3.2 12.9 + - + +
495D ASP 2.9 0.6 - - - -
496D ASN* 1.3 88.4 - - + +
498D ARG* 1.3 63.6 + - - +
499D ASP* 3.5 2.9 - - - -
500D TYR* 3.3 44.8 + - + -
501D LEU* 3.1 26.7 + - + +
521D PHE* 6.2 0.7 - - + -
452E LEU* 3.9 14.8 - - + -
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Residues in contact with ARG 498 (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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494D LEU 5.0 0.9 - - - -
495D ASP* 2.8 49.6 + - - +
496D ASN 3.8 0.8 - - - -
497D LEU* 1.3 72.6 - - - +
499D ASP* 1.3 66.7 + - - +
501D LEU* 2.9 9.1 + - - +
502D ASP* 2.7 31.6 + - - +
536D THR* 2.9 34.2 + - - +
537D LEU* 5.7 0.4 - - - +
540D ARG* 3.2 36.4 + - - +
451E ASN* 4.7 2.8 - - - +
473E GLU 5.0 0.9 - - - +
474E ASP* 3.5 48.2 + - + +
476E LYS* 4.6 3.4 - - + +
486E PRO* 4.3 1.4 - - - +
529E ASN* 3.8 8.1 + - - -
531E TYR* 3.2 26.1 + - - -
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Residues in contact with ASP 499 (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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498D ARG* 1.3 79.4 + - - +
500D TYR* 1.3 73.8 + - - +
502D ASP* 3.5 9.2 - - - -
503D GLY* 2.8 31.5 + - - -
505D VAL* 3.6 20.1 - - + +
507D VAL* 3.1 29.0 - - - +
433E THR* 6.0 0.2 - - - -
447E ALA 5.4 1.9 - - - +
448E LEU 5.1 2.9 - - - +
449E ASN* 3.4 27.6 - - - +
473E GLU* 3.5 31.2 - - + +
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Residues in contact with TYR 500 (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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420D ARG* 3.1 18.2 + - - -
421D TYR* 3.9 1.0 + - - -
458D ASN* 5.7 1.2 + - - -
461D LEU* 4.0 20.9 - - + +
497D LEU* 3.4 42.8 - - + +
498D ARG 3.1 0.4 - - - -
499D ASP* 1.3 115.7 - - - +
501D LEU* 1.3 58.5 + - + +
507D VAL* 3.8 25.6 - - + -
508D ASN 3.5 21.4 + - - -
509D LEU* 4.7 3.6 - - + -
521D PHE* 3.3 52.4 - + + +
449E ASN* 4.6 12.6 - - + -
452E LEU* 5.1 5.3 - - + +
460E GLU* 4.0 15.8 + - - -
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Residues in contact with LEU 501 (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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418D LYS* 4.4 6.2 + - - -
420D ARG* 3.3 13.7 + - - +
421D TYR* 3.8 45.1 - - + -
472D PHE* 4.9 8.5 - - + -
494D LEU* 3.3 33.4 - - + +
497D LEU* 3.1 15.7 + - + +
498D ARG* 2.9 9.9 + - - +
500D TYR* 1.3 78.7 - - + +
502D ASP* 1.3 64.7 + - - +
521D PHE* 6.2 0.7 - - + -
526D VAL* 5.1 2.7 - - + -
537D LEU* 3.8 22.4 - - + -
540D ARG* 3.9 31.4 - - + +
541D PHE* 5.5 3.6 - - + -
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Residues in contact with ASP 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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417D PRO* 3.4 7.8 - - - +
418D LYS* 3.1 47.1 + - + +
420D ARG* 3.2 14.4 + - - -
498D ARG 2.7 22.2 + - - +
499D ASP* 3.5 7.0 - - - +
501D LEU* 1.3 77.8 - - - +
503D GLY* 1.3 60.4 + - - +
504D SER* 3.4 12.6 - - - +
505D VAL* 6.4 0.2 - - + -
540D ARG* 2.8 34.7 + - - -
433E THR* 4.4 16.0 - - + +
473E GLU* 4.7 0.2 - - - +
474E ASP* 4.1 5.2 - - - +
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Residues in contact with GLY 503 (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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417D PRO* 5.0 2.5 - - - -
420D ARG* 3.2 21.0 - - - +
499D ASP 2.8 18.6 + - - -
500D TYR 4.7 0.4 - - - -
502D ASP* 1.3 72.6 - - - +
504D SER* 1.3 59.7 + - - +
505D VAL 3.2 8.3 - - - -
520D ILE* 3.1 28.7 - - - +
521D PHE* 4.7 2.2 - - - -
567E ARG* 4.1 13.9 + - - -
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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