Contacts of the helix formed by residues 424 - 429 (chain B) in PDB entry 2D2O
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 ARG 424 (chain B).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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418B ASP* 3.6 4.3 - - - -
422B THR 3.8 0.4 + - - -
423B GLU* 1.3 75.7 - - - +
425B PHE* 1.3 64.7 + - - +
426B LEU 4.3 2.5 - - - +
427B THR* 3.2 5.7 + - - +
428B SER* 3.0 18.5 + - - -
453B TYR* 3.2 20.4 - - - -
454B TYR* 2.6 49.3 + - - -
455B GLY 3.9 1.8 - - - -
456B ASP* 3.0 31.7 + - - +
460B MET* 3.5 30.8 - - - +
461B ALA* 3.3 13.9 + - - +
462B GLY* 2.9 41.1 + - - +
463B ALA 4.3 0.2 + - - -
468B CYS* 3.1 30.5 + - - -
470B ARG* 6.1 0.2 - - - +
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Residues in contact with PHE 425 (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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380B VAL* 3.8 28.3 - - + -
381B ILE* 3.5 31.4 - - + -
384B PHE* 4.3 2.7 - - + -
385B ALA* 4.0 6.1 - - + -
417B LEU* 3.5 38.4 - - + +
418B ASP* 3.0 19.0 + - - +
423B GLU 3.7 1.0 + - - -
424B ARG* 1.3 69.6 - - - +
426B LEU* 1.3 65.9 + - - +
428B SER* 3.0 5.1 + - - -
429B CYS* 2.9 42.3 + - - -
435B LYS 4.7 0.4 - - - -
436B PHE* 3.6 27.4 - + + -
439B ALA* 3.3 31.9 - - + -
456B ASP* 4.5 1.4 + - - +
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Residues in contact with LEU 426 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
424B ARG* 3.3 1.4 - - - +
425B PHE* 1.3 77.8 - - - +
427B THR* 1.3 55.8 + - - +
429B CYS* 3.2 9.1 + - - +
431B GLY* 2.7 58.6 + - - +
432B ASN 4.1 13.0 - - - +
433B GLU* 4.3 8.1 - - + +
436B PHE* 3.6 30.1 - - + -
456B ASP* 5.6 0.2 + - - -
459B GLY* 3.4 30.7 - - - +
460B MET 3.9 14.6 - - - +
461B ALA* 4.2 12.6 - - + -
483B LEU* 6.5 0.2 - - + -
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Residues in contact with THR 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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423B GLU* 3.7 14.4 - - - +
424B ARG* 3.2 11.2 + - - +
425B PHE 3.1 0.2 - - - -
426B LEU* 1.3 76.8 - - - +
428B SER* 1.3 59.3 + - - +
430B GLY* 2.9 18.3 + - - +
431B GLY* 4.4 3.4 - - - +
461B ALA* 3.6 8.2 - - - +
462B GLY 2.8 43.6 + - - +
463B ALA* 4.7 3.8 - - + +
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Residues in contact with SER 428 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
377B ARG* 4.5 0.2 + - - -
381B ILE* 3.6 30.5 - - - +
385B ALA* 3.7 22.3 - - - +
386B THR* 4.6 7.8 - - - +
423B GLU* 2.6 38.6 + - - +
424B ARG 3.0 6.7 + - - -
425B PHE* 3.0 12.6 + - - -
427B THR* 1.3 77.5 - - - +
429B CYS* 1.3 57.7 + - - +
430B GLY 3.2 3.6 + - - -
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Residues in contact with CYS 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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384B PHE 4.2 0.2 - - - -
385B ALA* 4.0 20.0 - - - -
425B PHE* 2.9 48.1 + - - -
426B LEU* 3.5 10.1 - - - +
427B THR 3.1 0.4 - - - -
428B SER* 1.3 76.3 - - - +
430B GLY* 1.3 61.8 + - - +
431B GLY 3.1 0.4 - - - -
432B ASN* 3.1 32.2 + - - +
435B LYS* 4.1 14.9 + - + +
436B PHE* 3.8 17.9 - - - -
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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