Contacts of the helix formed by residues 283 - 288 (chain 4) in PDB entry 3EXG
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 PRO 283 (chain 4).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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2504 GLU* 3.2 28.9 - - + +
2544 MET* 5.2 11.2 - - + -
2824 GLY* 1.3 80.4 - - - +
2844 ALA* 1.3 58.3 + - + +
2854 PHE 2.8 12.0 + - - -
2864 ASN* 3.6 14.7 + - - -
2874 PHE* 4.0 11.9 - - + -
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Residues in contact with ALA 284 (chain 4).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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2504 GLU* 4.0 16.8 + - + +
2534 VAL* 4.0 12.8 - - + +
2544 MET* 3.8 22.7 - - + -
2794 ILE* 3.9 26.7 - - + -
2824 GLY 3.3 2.0 - - - -
2834 PRO* 1.3 77.9 - - - +
2854 PHE* 1.3 64.2 + - - +
2864 ASN 3.3 0.9 - - - -
2874 PHE* 3.1 25.3 + - - +
2884 LEU* 3.8 4.5 + - - +
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Residues in contact with PHE 285 (chain 4).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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2794 ILE 3.6 9.7 + - - +
2804 MET* 3.4 42.0 - - + +
2824 GLY 3.6 6.4 + - - +
2834 PRO 2.8 2.2 + - - -
2844 ALA* 1.3 78.6 - - - +
2864 ASN* 1.3 76.7 + - - +
2874 PHE 3.1 4.3 + - - -
2884 LEU* 3.1 39.7 + - + +
2806 MET* 4.9 1.8 - - - -
2856 PHE* 3.9 35.2 - + - -
2886 LEU* 5.3 4.3 - - + -
2906 ALA* 4.6 4.3 - - - -
2916 PRO* 3.9 38.6 - - + -
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Residues in contact with ASN 286 (chain 4).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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2834 PRO 3.6 10.0 + - - +
2844 ALA 3.3 0.8 - - - -
2854 PHE* 1.3 96.2 - - - +
2874 PHE* 1.3 64.7 + - + +
2884 LEU 3.2 4.6 - - - +
2894 ASP* 5.6 0.5 - - - +
2916 PRO* 5.6 1.9 - - - +
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Residues in contact with PHE 287 (chain 4).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
2534 VAL 3.9 3.8 - - - +
2544 MET* 3.7 65.1 - - + -
2574 ASN* 2.8 40.0 + - - +
2834 PRO* 4.0 10.3 - - + -
2844 ALA* 3.1 16.4 + - - +
2854 PHE 3.1 1.4 + - - -
2864 ASN* 1.3 84.7 - - + +
2884 LEU* 1.3 61.7 + - - +
2894 ASP* 3.4 3.6 + - - +
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Residues in contact with LEU 288 (chain 4).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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2534 VAL* 3.3 30.7 - - + -
2574 ASN 3.5 9.6 - - - +
2584 HIS* 4.5 1.1 - - - -
2594 LEU* 4.5 15.0 - - + -
2794 ILE* 3.9 26.0 - - + -
2844 ALA 3.8 1.7 + - - +
2854 PHE* 3.1 31.4 + - + +
2864 ASN 3.2 2.0 - - - +
2874 PHE* 1.3 78.5 - - - +
2894 ASP* 1.3 63.2 + - - +
2904 ALA 3.3 22.1 + - - +
2914 PRO* 4.9 0.9 - - + -
2924 ALA* 4.4 6.1 - - + +
2806 MET* 4.4 14.8 - - - -
2856 PHE* 5.5 3.4 - - + -
54U LYS* 6.0 0.2 - - - +
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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