Contacts of the helix formed by residues 425 - 431 (chain B) in PDB entry 4DVQ
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 425 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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336B VAL* 3.8 26.5 - - + -
340B LEU* 5.0 2.5 - - + -
364B LEU* 3.8 19.1 - - + +
367B ALA* 3.2 39.8 - - + +
368B ALA* 3.8 24.2 - - + +
371B GLU* 4.5 2.7 - - + -
423B TYR* 3.6 13.5 - - + +
424B ASN* 1.3 83.8 - - - +
426B GLN* 1.3 64.0 + - - +
427B ARG 3.2 0.2 - - - -
428B TRP* 3.1 14.8 + - + +
429B LEU* 3.8 2.4 + - - +
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Residues in contact with GLN 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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339B ILE* 5.8 4.8 - - + +
364B LEU* 3.7 27.8 - - + +
424B ASN* 3.2 16.4 + - - +
425B PRO* 1.3 71.7 - - - +
427B ARG* 1.3 54.0 + - - +
428B TRP 2.5 18.6 + - - -
429B LEU* 2.6 37.0 + - - +
430B ASP* 3.2 35.7 + - - +
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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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371B GLU* 3.0 28.5 + - - -
374B ARG* 3.4 17.9 - - - +
417B PHE* 3.4 36.7 - - + +
418B PRO* 2.8 29.4 + - + +
419B ARG* 2.9 25.6 + - - +
422B ARG* 3.3 22.4 + - - +
424B ASN* 2.9 35.2 + - - +
426B GLN* 1.3 74.8 - - - +
428B TRP* 1.3 67.0 + - + +
430B ASP* 4.3 10.8 + - - +
431B ILE* 3.9 18.5 + - - +
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Residues in contact with TRP 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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367B ALA* 3.5 28.7 - - + -
370B LYS* 3.7 40.2 - - + -
371B GLU* 2.9 28.9 + - - +
374B ARG* 4.1 11.7 - - + -
417B PHE* 3.9 22.0 - + - -
425B PRO* 3.1 15.0 + - + +
426B GLN 2.5 7.7 + - - -
427B ARG* 1.3 84.3 - - + +
429B LEU* 1.3 64.9 + - + +
430B ASP 3.4 0.6 + - - -
431B ILE* 4.0 19.8 + - + +
439B HIS* 3.8 22.9 - - + -
440B HIS* 3.6 35.9 - - + -
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Residues in contact with LEU 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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363B PRO* 4.0 34.8 - - + +
364B LEU* 4.0 19.7 - - + -
367B ALA* 4.8 5.2 - - + -
425B PRO 3.8 2.2 + - - +
426B GLN* 2.6 42.6 + - - +
428B TRP* 1.3 74.4 - - - +
430B ASP* 1.3 63.8 + - - +
431B ILE 3.5 3.3 + - - -
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Residues in contact with ASP 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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426B GLN* 3.2 35.2 + - - +
427B ARG* 4.5 7.6 + - - +
429B LEU* 1.3 76.8 - - - +
431B ILE* 1.3 68.4 + - + +
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Residues in contact with ILE 431 (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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427B ARG 3.9 15.5 - - - +
428B TRP* 4.0 18.3 + - + +
429B LEU 3.4 5.7 - - - -
430B ASP* 1.3 84.3 - - + +
439B HIS* 5.7 12.3 - - + +
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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