Contacts of the helix formed by residues 425 - 430 (chain B) in PDB entry 5Y7G
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 ASP 425 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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423B SER* 3.1 19.5 + - - -
424B ALA* 1.3 76.4 - - - +
426B PHE* 1.3 69.4 + - - +
427B ARG 3.1 3.1 - - - -
428B GLN* 2.9 24.3 + - - +
429B ARG* 2.9 50.7 + - + +
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Residues in contact with PHE 426 (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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394B PHE* 6.1 0.2 - + - -
402B ILE* 4.6 13.9 - - + -
418B PRO* 4.2 11.4 - - + -
420B ASP* 3.7 25.6 - - - +
421B LEU* 3.7 21.5 - - + +
423B SER* 3.3 17.0 + - - +
424B ALA 3.2 1.4 - - - -
425B ASP* 1.3 84.3 + - - +
427B ARG* 1.3 67.1 + - - +
429B ARG* 3.6 7.0 + - - +
430B ARG* 3.1 64.8 + - - +
434B PHE* 3.9 24.8 - + - -
464B PHE* 5.7 0.9 - + - -
495B LEU* 5.0 1.6 - - + -
498B ILE* 3.6 32.3 - - + -
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Residues in contact with ARG 427 (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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424B ALA 4.3 7.8 + - - +
425B ASP* 3.1 0.6 - - - +
426B PHE* 1.3 87.2 - - + +
428B GLN* 1.3 60.2 + - + +
430B ARG* 3.3 2.3 + - - -
431B ALA* 3.0 51.7 + - - +
434B PHE* 3.9 19.9 - - + +
435B GLU* 3.7 22.8 + - - -
438B LEU* 3.6 18.0 - - - +
492B GLU* 3.3 24.7 + - - -
495B LEU* 3.6 47.4 - - + +
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Residues in contact with GLN 428 (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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425B ASP* 2.9 23.8 + - - +
427B ARG* 1.3 78.7 - - + +
429B ARG* 1.3 66.4 + - - +
431B ALA* 3.0 23.7 + - + +
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Residues in contact with ARG 429 (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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406B ILE* 3.4 32.0 - - + +
407B PRO* 3.2 29.9 + - - +
408B GLY 6.0 0.8 - - - -
409B ALA* 5.9 0.6 - - - +
420B ASP* 3.2 34.4 + - - +
423B SER* 4.9 2.0 + - - -
425B ASP* 2.9 47.5 + - + +
426B PHE* 4.0 4.9 - - - +
427B ARG 3.4 0.2 - - - -
428B GLN* 1.3 77.7 - - - +
430B ARG* 1.3 68.2 + - + +
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Residues in contact with ARG 430 (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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401B ALA* 2.7 29.9 + - + +
402B ILE 3.9 3.2 + - - -
404B ALA* 3.5 15.7 + - + +
406B ILE* 3.3 40.0 - - + +
409B ALA* 3.7 15.8 - - - +
418B PRO* 3.8 10.9 - - - +
420B ASP* 3.0 28.5 + - - -
426B PHE* 3.1 36.8 + - - +
427B ARG 3.3 2.0 + - - -
428B GLN 3.1 0.6 - - - -
429B ARG* 1.3 80.1 - - - +
431B ALA* 1.3 51.2 + - - +
432B ALA* 2.6 5.7 + - - -
433B LEU* 2.5 47.2 + - + +
434B PHE* 3.2 22.6 + - + -
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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