Contacts of the helix formed by residues 56 - 60 (chain U) in PDB entry 1P3Q
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 56 (chain U).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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1U MET* 4.6 1.6 - - + -
3U ILE* 5.0 2.9 - - + -
17U VAL* 3.4 37.5 - - + -
18U GLU 3.5 13.5 - - - +
19U PRO* 3.5 8.3 + - + +
21U ASP* 3.0 15.2 + - + +
23U ILE* 3.9 17.2 - - + +
26U VAL* 4.0 19.7 - - + -
55U THR* 1.3 74.1 - - - +
57U SER* 1.3 64.2 + - - +
59U TYR* 3.0 12.5 + - - -
61U ILE* 3.1 66.6 + - + +
67U LEU* 4.4 8.7 - - + -
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Residues in contact with SER 57 (chain U).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
19U PRO* 3.0 23.0 + - - +
20U SER* 5.5 0.4 - - - -
55U THR* 3.6 7.2 - - - -
56U LEU* 1.3 76.9 - - - +
58U ASP* 1.3 62.4 + - - +
60U ASN* 2.9 7.5 + - - +
61U ILE 4.7 5.2 - - - +
62U GLN* 6.5 0.2 - - - -
6V LYS* 2.8 28.4 + - - +
10V GLY 2.9 18.0 + - - -
11V LYS* 3.9 1.7 - - - -
12V THR* 2.8 36.7 + - - -
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Residues in contact with ASP 58 (chain U).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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54U ARG* 3.5 45.3 + - + +
55U THR* 2.8 46.0 + - - +
57U SER* 1.3 77.7 + - - +
59U TYR* 1.3 60.2 + - + +
60U ASN* 3.4 6.6 + - - -
6V LYS* 5.0 1.5 + - - +
9V THR 5.7 0.9 - - - +
10V GLY 5.2 6.6 - - - +
11V LYS* 5.7 1.7 + - - -
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Residues in contact with TYR 59 (chain U).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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23U ILE* 3.9 13.9 - - + -
45U PHE* 3.4 18.5 - + + -
48U LYS* 6.3 2.2 - - + -
49U GLN 4.4 4.1 + - - -
50U LEU* 3.5 38.6 - - + -
51U GLU* 2.9 28.5 + - - +
54U ARG* 3.1 57.8 + - + -
55U THR 3.4 18.1 + - - -
56U LEU 3.0 7.7 + - - +
58U ASP* 1.3 80.0 - - - +
60U ASN* 1.3 74.2 + - - +
61U ILE* 3.2 14.5 + - + -
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Residues in contact with ASN 60 (chain U).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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414Q ASN* 4.0 31.2 + - - +
415Q THR* 4.6 7.0 + - - +
418Q ASN* 3.8 34.9 + - + +
45U PHE* 3.9 11.8 - - + -
57U SER* 2.9 10.7 + - - +
58U ASP 4.5 5.8 + - - -
59U TYR* 1.3 82.2 + - - +
61U ILE* 1.3 60.9 + - - +
62U GLN* 3.6 12.2 + - - +
65U SER* 4.3 1.0 + - - -
6V LYS* 2.8 36.1 + - - +
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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