Contacts of the helix formed by residues 29 - 33 (chain C) in PDB entry 5X11
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 GLU 29 (chain C).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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25C TYR* 4.7 7.3 - - - -
28C GLU* 1.3 90.1 - - - +
30C LEU* 1.3 63.9 + - - +
31C GLY 3.4 0.3 + - - -
32C GLN* 3.5 23.3 + - - +
33C PHE* 4.9 0.3 - - - -
154C HIS* 2.9 49.6 + - + +
157C VAL* 3.8 19.9 - - + +
158C LEU* 4.6 14.4 - - + -
103D TYR* 2.7 36.7 + - + -
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Residues in contact with LEU 30 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
7C ALA 5.4 0.2 - - - +
11C LEU* 4.0 31.0 - - + -
25C TYR 3.4 15.4 + - - +
26C PHE* 3.5 31.4 - - + -
28C GLU 3.3 0.2 - - - -
29C GLU* 1.3 82.2 - - - +
31C GLY* 1.3 55.1 + - - +
32C GLN 3.0 6.6 + - - -
33C PHE* 3.0 14.4 + - + +
34C TRP* 3.0 15.8 + - + +
157C VAL* 4.9 5.8 - - + -
99D MET 5.2 0.4 - - - +
100D LEU* 3.5 31.4 - - + -
103D TYR* 3.6 39.9 - - + -
104D PHE* 4.9 1.3 - - + -
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Residues in contact with GLY 31 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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26C PHE 3.0 25.1 + - - -
27C LYS 5.2 0.4 - - - -
28C GLU 3.1 11.0 + - - -
30C LEU* 1.3 75.9 - - - +
32C GLN* 1.3 59.9 + - - +
33C PHE 3.3 0.4 - - - -
34C TRP 3.0 9.6 - - - -
35C SER* 5.0 1.1 - - - -
92D GLU* 4.0 8.7 - - - +
93D THR* 2.7 30.7 + - - +
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Residues in contact with GLN 32 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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28C GLU 4.4 1.5 + - - +
29C GLU* 3.5 18.3 + - + +
30C LEU 3.0 1.4 + - - -
31C GLY* 1.3 78.0 - - - +
33C PHE* 1.3 71.5 + - + +
131C LEU* 4.0 29.4 - - + +
157C VAL 5.4 0.7 - - - +
158C LEU* 6.0 2.2 - - + -
161C ALA* 3.7 16.5 - - + +
164C ARG* 3.0 36.6 + - - +
165C GLU* 5.3 3.3 - - - +
92D GLU* 3.9 27.0 + - - +
93D THR* 3.7 1.2 - - - -
94D VAL 3.1 16.8 + - - +
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Residues in contact with PHE 33 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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29C GLU 4.9 1.6 - - - -
30C LEU* 3.0 8.2 + - + +
32C GLN* 1.3 85.0 - - + +
34C TRP* 1.3 67.5 + - + +
157C VAL* 3.2 44.9 - - + -
160C LYS* 3.7 16.6 - - + -
161C ALA* 3.6 26.0 - - - -
164C ARG* 3.2 39.7 - - - -
93D THR* 3.9 5.8 - - - -
94D VAL 3.7 6.5 - - - -
95D LYS* 3.4 3.3 - - - -
96D ASP* 3.0 34.4 + - + +
99D MET* 3.5 40.4 - - + -
100D LEU* 5.1 0.9 - - + +
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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