Contacts of the helix formed by residues 28 - 32 (chain E) in PDB entry 2VWE
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 THR 28 (chain E).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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25A THR* 4.8 8.5 - - + +
26A CYS* 2.4 35.3 + - + +
27A GLN* 3.6 13.8 - - - +
28A PRO* 5.1 1.4 - - - +
100A GLN* 5.1 7.5 - - - +
101A CYS 3.4 26.4 + - - +
102A GLU* 4.5 1.8 - - - -
103A CYS* 5.3 0.9 - - - +
27E TYR* 1.3 84.3 - - - +
29E PHE* 1.3 64.3 + - - +
30E THR* 3.9 16.2 - - - +
31E GLY* 3.2 14.5 + - - +
32E PHE* 3.4 7.8 - - - -
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Residues in contact with PHE 29 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
100A GLN* 5.0 6.3 - - - +
22E CYS 5.1 0.4 - - - -
24E ALA* 3.5 26.7 - - + +
27E TYR* 3.2 21.3 + - - +
28E THR* 1.3 72.5 - - - +
30E THR* 1.3 66.1 + - + +
31E GLY 3.1 3.6 + - - -
32E PHE 3.7 6.8 + - - +
34E ILE* 3.9 22.9 - - + -
52E PRO* 3.0 41.6 - - + -
71E VAL* 3.8 22.4 - - + -
72E ASP 3.7 19.7 - - - -
73E LYS* 4.8 5.4 - - + -
76E SER* 3.9 27.8 - - - +
77E THR 3.8 15.7 - - - -
78E ALA* 3.9 8.1 - - + -
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Residues in contact with THR 30 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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62A PRO* 5.6 0.2 - - - +
66A LEU* 4.8 2.6 - - - +
102A GLU* 3.4 14.8 - - + +
103A CYS* 3.2 34.9 + - - +
28E THR* 3.3 5.8 - - - +
29E PHE* 1.3 80.1 - - + +
31E GLY* 1.3 56.9 + - - +
32E PHE 3.7 0.9 - - - -
52E PRO* 3.5 32.0 - - + +
53E GLY* 3.4 25.7 - - - +
73E LYS* 4.1 29.4 - - + -
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Residues in contact with GLY 31 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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25A THR* 4.5 10.9 - - - +
62A PRO* 3.2 34.0 - - - +
103A CYS* 4.8 5.2 - - - -
28E THR* 3.2 11.7 + - - +
29E PHE 3.1 2.2 - - - -
30E THR* 1.3 79.0 + - - +
32E PHE* 1.3 74.1 + - - +
52E ASN* 5.7 1.8 - - - -
96E TYR* 4.0 3.3 - - - -
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Residues in contact with PHE 32 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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21A TYR* 3.7 13.5 - + - -
22A THR* 5.2 6.3 - - + -
25A THR* 3.6 33.9 - - + -
27E TYR* 3.4 37.5 - + + -
28E THR 3.4 9.4 - - - -
29E PHE 3.7 2.7 + - - +
30E THR 3.7 0.4 - - - -
31E GLY* 1.3 79.7 - - - +
33E TRP* 1.3 64.1 + - - +
34E ILE* 3.7 3.8 + - - +
52E ASN* 3.3 25.8 + - - +
94E ARG* 3.3 44.0 - - + -
95E SER 3.7 6.1 - - - +
96E TYR* 3.5 41.5 - + + +
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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