Contacts of the helix formed by residues 107 - 111 (chain L) in PDB entry 1DZG
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 LYS 107 (chain L).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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54L ALA* 3.0 35.4 - - - +
57L ARG* 3.8 38.6 - - + +
58L PHE* 4.4 4.7 - - - +
61L THR* 4.9 12.3 + - - +
103L MET 3.5 5.2 - - - -
104L GLU 3.2 18.6 + - - +
105L VAL* 4.2 7.6 + - - +
106L PHE* 1.3 74.0 - - - +
108L PHE* 1.3 57.1 + - - +
109L ASP* 3.3 8.3 - - - +
110L THR* 3.2 28.9 - - - +
111L ILE* 4.4 0.3 - - - +
338L MET* 5.8 2.8 - - - +
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Residues in contact with PHE 108 (chain L).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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51L LEU* 3.6 19.3 - - + -
54L ALA* 5.0 0.2 - - + -
55L ASN* 4.0 7.6 - - - -
84L SER* 4.2 8.1 - - - -
87L PHE 5.2 0.7 - - - -
88L ALA* 4.1 16.2 - - + -
91L LYS* 4.1 25.1 - - + -
102L LEU* 3.9 10.5 - - + -
103L MET* 2.7 23.6 + - - +
106L PHE* 2.9 41.8 + + + -
107L LYS* 1.3 68.9 - - - +
109L ASP* 1.3 57.0 + - - +
110L THR 3.2 4.3 - - - -
111L ILE* 3.4 14.5 + - - +
119L ILE* 3.3 43.8 - - + +
123L PHE* 3.5 35.4 - + - -
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Residues in contact with ASP 109 (chain L).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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23L TYR* 4.6 4.3 + - + -
25L SER* 3.9 34.8 - - - +
103L MET* 3.1 30.8 + - + +
104L GLU* 3.8 23.0 - - + +
107L LYS* 3.9 8.0 - - - +
108L PHE* 1.3 76.0 - - - +
110L THR* 1.3 69.2 + - - +
111L ILE 3.3 8.1 - - - +
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Residues in contact with THR 110 (chain L).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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50L GLU* 4.3 14.6 - - + +
53L LYS* 5.4 0.9 - - + -
54L ALA* 4.8 7.4 - - + -
57L ARG* 3.5 37.3 + - - +
107L LYS* 3.2 30.4 + - - +
108L PHE 3.2 0.2 - - - -
109L ASP* 1.3 81.3 + - - +
111L ILE* 1.3 65.3 + - - +
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Residues in contact with ILE 111 (chain L).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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25L SER* 5.9 0.5 - - - -
47L ARG* 3.8 27.8 - - + +
50L GLU* 3.8 20.9 - - + +
51L LEU* 3.7 44.0 - - + +
54L ALA* 4.5 1.1 - - + -
107L LYS 4.4 3.6 - - - +
108L PHE* 3.4 31.0 - - - +
109L ASP 3.3 9.4 - - - +
110L THR* 1.3 80.3 - - - +
112L SER* 1.3 71.7 + - - +
113L GLU 3.9 3.7 - - - +
119L ILE* 3.6 21.5 - - + -
122L PHE* 4.5 13.5 - - + -
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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