Contacts of the helix formed by residues 104 - 109 (chain A) in PDB entry 3UJK
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 104 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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103A SER* 1.3 92.1 + - - +
105A PHE* 1.3 60.8 + - - +
106A GLU 3.4 1.0 - - - +
107A PHE* 3.8 12.2 + - + +
108A LYS* 3.5 19.1 + - - +
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Residues in contact with PHE 105 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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103A SER* 3.5 4.5 + - - +
104A LEU* 1.3 78.1 - - - +
106A GLU* 1.3 70.6 + - + +
107A PHE 3.3 0.2 - - - -
108A LYS* 3.2 9.2 + - + +
109A CYS* 3.1 35.5 + - - -
155A HIS* 4.2 15.5 - - + -
156A LEU* 5.1 11.7 - - + -
195A PHE* 6.5 2.2 - + - -
241A PRO* 3.7 35.0 - - + -
242A THR* 5.1 8.7 - - + -
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Residues in contact with GLU 106 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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103A SER* 3.2 39.7 + - - +
105A PHE* 1.3 83.8 - - + +
107A PHE* 1.3 63.1 + - + +
109A CYS* 3.2 19.1 + - - +
110A VAL* 3.4 15.7 + - - +
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Residues in contact with PHE 107 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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103A SER* 4.0 33.9 - - - -
104A LEU* 3.8 11.0 + - + +
105A PHE 3.3 0.2 - - - -
106A GLU* 1.3 81.2 - - + +
108A LYS* 1.3 62.0 + - - +
110A VAL* 3.3 31.0 + - + +
112A LEU* 6.2 0.2 - - - +
374A GLU* 3.6 44.9 - - + -
414A ILE* 5.9 6.1 - - + -
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Residues in contact with LYS 108 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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104A LEU 3.5 12.2 + - - +
105A PHE* 3.2 15.0 + - + +
107A PHE* 1.3 79.4 - - - +
109A CYS* 1.3 59.7 + - - +
110A VAL 3.3 4.2 + - - +
159A HIS* 5.6 0.5 - - - -
241A PRO* 3.6 43.2 - - + +
242A THR* 6.1 0.4 - - + -
325A ARG* 3.9 21.5 + - - +
326A VAL 5.9 1.4 + - - -
327A LYS* 6.0 3.4 - - - +
411A LEU 3.7 20.2 + - - -
413A GLY* 3.8 23.2 - - - +
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Residues in contact with CYS 109 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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105A PHE* 3.1 48.8 + - - -
106A GLU* 3.2 12.0 + - - +
108A LYS* 1.3 76.6 - - - +
110A VAL* 1.3 56.9 + - - +
111A PRO* 3.5 1.0 - - - +
134A ARG* 5.0 1.9 + - - -
155A HIS 4.5 1.1 - - - -
157A SER* 3.5 32.4 - - - +
159A HIS* 2.7 34.6 + - - -
241A PRO* 3.9 12.1 - - - -
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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