Contacts of the helix formed by residues 402 - 406 (chain B) in PDB entry 3U1K
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 LEU 402 (chain B).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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400B ASP 3.6 1.0 + - - -
401B SER* 1.3 72.5 - - - +
403B GLU* 1.3 67.8 + - - +
405B GLY* 3.1 14.9 + - - -
422B ASN* 3.9 23.0 + - - +
466B PHE 4.2 5.8 - - - +
467B PRO* 3.2 23.8 - - + +
468B PHE* 3.5 32.1 - - - +
469B THR* 3.6 5.6 + - - +
650B PHE* 5.2 1.2 - - - -
626D TYR* 3.9 25.9 + - + +
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Residues in contact with GLU 403 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
401B SER* 3.3 17.3 - - - +
402B LEU* 1.3 75.4 + - + +
404B SER* 1.3 56.5 + - - +
405B GLY 2.9 4.9 - - - -
406B ILE* 2.9 33.9 + - + +
638B THR* 3.7 29.1 - - + +
640B SER* 2.7 36.4 + - - +
648B SER* 5.3 0.5 - - - +
650B PHE* 5.0 4.6 - - - +
623D PRO 5.5 4.5 - - - +
624D GLY* 6.0 2.2 - - - -
626D TYR* 4.8 14.1 - - + -
629D LYS* 6.4 0.2 - - - +
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Residues in contact with SER 404 (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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400B ASP* 3.3 20.0 - - - +
401B SER* 2.8 32.4 + - - -
403B GLU* 1.3 71.2 - - - +
405B GLY* 1.3 60.1 + - - +
406B ILE* 3.0 10.9 + - - -
469B THR* 3.9 1.2 + - - -
471B ARG* 2.9 30.2 + - - -
116C TYR* 4.2 11.0 + - - -
411C VAL* 5.0 14.2 - - - +
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Residues in contact with GLY 405 (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 SER 4.0 0.8 + - - -
402B LEU 3.1 12.0 + - - -
403B GLU 2.9 3.0 + - - -
404B SER* 1.3 80.4 + - - +
406B ILE* 1.3 68.3 + - - +
413B THR* 5.5 0.9 - - - -
417B GLY 4.7 2.8 - - - +
418B ILE* 4.0 18.1 - - - +
419B LYS 5.0 1.1 + - - -
422B ASN* 4.8 11.0 - - - -
469B THR* 4.2 9.8 + - - -
471B ARG* 4.8 2.2 - - - -
626D TYR* 5.8 0.2 - - - -
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Residues in contact with ILE 406 (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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403B GLU* 2.9 18.4 + - + +
404B SER* 3.0 5.7 - - - -
405B GLY* 1.3 88.2 - - - +
413B THR* 3.3 37.3 - - - +
418B ILE* 3.4 32.1 - - + -
409C ASP* 5.0 7.9 - - - +
626D TYR* 3.8 33.7 - - + +
629D LYS* 3.4 48.7 - - + +
630D LYS 5.0 0.4 - - - +
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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