Contacts of the helix formed by residues 32 - 37 (chain F) in PDB entry 3L73
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 MET 32 (chain F).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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26F PHE* 4.0 1.3 - - - -
31F LEU* 1.3 77.7 - - - +
33F ARG* 1.3 68.3 + - - +
34F ASP 4.2 0.9 - - - +
35F ASP* 2.7 30.5 + - - +
36F THR* 3.6 3.1 + - - +
61F ARG* 3.5 31.4 - - - +
81F VAL* 4.2 14.1 - - + -
85F GLU 4.7 5.6 - - - +
86F ASP* 3.3 20.6 - - - +
87F LYS* 3.3 58.8 - - + +
89F TYR* 4.1 9.4 - - + -
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Residues in contact with ARG 33 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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378C LEU* 2.9 49.7 + - + -
379C ASN* 3.2 23.6 + - - +
380C TYR* 3.2 30.7 + - + -
21F TYR* 5.0 2.9 - - + -
26F PHE* 3.5 21.4 - - + -
32F MET* 1.3 69.6 - - - +
34F ASP* 1.3 78.8 + - - +
36F THR* 2.7 31.1 + - - +
37F LEU* 3.9 2.4 + - - +
86F ASP* 2.9 24.4 + - - +
88F PRO* 3.5 14.7 - - - +
91F GLU* 2.7 31.1 + - - -
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Residues in contact with ASP 34 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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380C TYR* 2.4 28.7 + - - -
32F MET* 3.1 1.0 - - - +
33F ARG* 1.3 94.8 + - - +
35F ASP* 1.3 61.9 + - - +
36F THR 3.1 0.4 + - - -
37F LEU* 3.6 21.4 + - + +
58F ARG* 3.8 6.8 + - - -
86F ASP* 4.9 0.6 + - - -
87F LYS 5.0 0.4 - - - +
88F PRO* 3.7 10.3 - - + +
89F TYR* 3.4 29.5 + - + -
90F LEU* 3.0 17.4 + - + +
91F GLU* 2.8 32.3 + - - -
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Residues in contact with ASP 35 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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212C ILE* 3.6 15.3 - - - +
31F LEU* 3.6 20.9 - - + -
32F MET* 2.7 37.2 + - - +
34F ASP* 1.3 74.2 - - - +
36F THR* 1.3 58.2 + - - +
37F LEU 3.4 2.9 + - - +
58F ARG* 3.5 18.9 + - - +
61F ARG* 2.6 36.8 + - - +
62F ILE* 4.0 11.1 - - + +
89F TYR* 2.5 39.8 + - - -
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Residues in contact with THR 36 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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210C LEU 5.6 0.7 - - - +
211C GLY 4.8 3.1 - - - +
212C ILE* 4.0 13.2 - - + +
313C GLN* 2.5 42.4 + - - +
314C ARG 4.9 0.3 + - - -
318C PHE* 3.8 19.3 - - + -
380C TYR* 5.9 0.3 - - - -
26F PHE* 3.7 34.4 - - + -
31F LEU* 4.0 10.8 - - + -
32F MET 4.2 3.6 - - - +
33F ARG* 2.7 21.2 + - - +
35F ASP* 1.3 78.5 - - - +
37F LEU* 1.3 63.8 + - - +
38F TYR* 3.5 1.7 + - - -
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Residues in contact with LEU 37 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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211C GLY 4.9 3.3 - - - +
212C ILE* 5.0 3.6 - - - +
312C LYS* 3.7 26.9 - - + +
313C GLN* 4.8 2.5 - - + -
380C TYR* 3.5 45.5 - - + +
33F ARG 4.9 0.4 - - - +
34F ASP* 3.7 20.9 - - - +
35F ASP 3.3 6.0 - - - +
36F THR* 1.3 80.0 + - - +
38F TYR* 1.3 67.8 + - - +
39F GLU* 3.4 11.4 + - - +
43F VAL* 4.6 12.3 - - + -
58F ARG* 5.4 2.4 + - - +
90F LEU* 4.1 15.7 - - + -
91F GLU* 6.4 0.2 - - - -
94F LEU* 3.8 27.8 - - + -
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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