Contacts of the helix formed by residues 539 - 543 (chain B) in PDB entry 3A8X
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 GLY 539 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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325B TYR* 3.7 3.7 + - - -
327B ASN* 3.6 22.7 + - - +
534B ILE* 3.5 24.3 - - - +
535B SER 3.1 22.6 + - - -
536B GLY 4.3 0.4 + - - -
537B GLU 3.9 0.2 - - - -
538B PHE* 1.3 80.4 - - - +
540B LEU* 1.3 60.5 + - - +
541B ASP 3.2 6.4 + - - -
542B ASN* 4.2 4.5 + - - -
543B PHE* 4.2 1.7 - - - -
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Residues in contact with LEU 540 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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249B ARG* 3.8 48.5 - - + +
251B ILE* 3.7 29.4 - - + -
261B LEU* 4.2 5.6 - - + -
325B TYR* 3.8 12.1 - - - +
535B SER 4.2 3.0 + - - -
538B PHE* 4.1 27.6 - - + -
539B GLY* 1.3 73.2 - - - +
541B ASP* 1.3 65.7 + - - +
542B ASN 3.2 3.1 - - - -
543B PHE* 3.3 29.4 + - + +
548B THR* 4.1 12.6 + - + +
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Residues in contact with ASP 541 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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333B PHE* 5.9 2.9 - - - -
533B ASN 5.4 5.6 - - - +
535B SER* 4.4 23.5 - - - +
539B GLY 3.2 3.0 - - - -
540B LEU* 1.3 82.0 - - - +
542B ASN* 1.3 65.3 + - - +
543B PHE 3.3 7.1 + - - +
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Residues in contact with ASN 542 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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327B ASN* 2.8 30.3 + - - +
328B GLY* 3.8 13.3 + - - +
329B GLY* 3.8 23.6 - - - +
333B PHE* 5.3 21.1 - - + +
532B PRO* 4.5 2.8 - - - +
533B ASN* 3.2 29.5 + - - +
534B ILE* 3.6 8.9 - - - +
539B GLY 4.2 4.0 + - - +
540B LEU 3.2 0.8 - - - -
541B ASP* 1.3 81.7 - - - +
543B PHE* 1.3 65.8 + - + +
544B ASP 4.3 0.2 + - - -
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Residues in contact with PHE 543 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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251B ILE* 3.5 39.9 - - + +
325B TYR* 3.4 38.4 - + - -
326B VAL 3.5 25.6 - - - -
327B ASN* 3.8 13.2 - - + -
329B GLY* 6.1 3.1 - - - -
539B GLY 4.2 1.8 - - - -
540B LEU* 3.3 36.0 + - + +
541B ASP* 3.3 7.4 - - - +
542B ASN* 1.3 84.0 - - - +
544B ASP* 1.3 65.9 + - - +
545B SER* 3.3 4.2 + - - -
548B THR* 3.8 15.5 + - + +
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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