Contacts of the helix formed by residues 26 - 36 (chain F) in PDB entry 3JCA
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 26 (chain F).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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20F ARG* 4.7 2.5 - - - +
24F HIS 4.1 1.4 + - - -
25F ILE* 1.3 69.9 - - - +
27F ARG* 1.3 61.2 + - + +
28F GLU* 3.8 27.8 - - + +
29F GLN* 2.7 59.1 + - + +
30F ALA 2.9 9.5 + - - -
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Residues in contact with ARG 27 (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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16F ALA* 4.9 5.6 - - + +
20F ARG* 3.4 38.9 - - - +
25F ILE 3.1 4.4 + - - -
26F THR* 1.3 73.2 - - + +
28F GLU* 1.3 58.2 + - + +
30F ALA* 3.3 4.1 + - - +
31F ARG* 3.0 28.2 + - + +
198F ASN* 5.3 8.2 + - - +
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Residues in contact with GLU 28 (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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26F THR* 4.1 15.8 - - + +
27F ARG* 1.3 79.5 - - + +
29F GLN* 1.3 57.9 + - + +
31F ARG* 3.1 8.7 + - - +
32F GLU* 2.9 37.0 + - - +
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Residues in contact with GLN 29 (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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2F LEU* 4.3 18.9 - - + +
25F ILE* 3.4 12.3 - - + +
26F THR* 2.7 48.4 + - + +
28F GLU* 1.3 73.9 - - + +
30F ALA* 1.3 58.2 + - - +
32F GLU* 3.1 23.3 + - - +
33F ILE* 2.9 31.5 + - - +
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Residues in contact with ALA 30 (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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16F ALA* 3.5 32.1 - - + +
19F LEU* 3.9 7.0 - - + +
20F ARG* 4.0 9.2 - - + -
25F ILE* 3.4 15.1 - - + +
26F THR 2.9 10.3 + - - +
27F ARG* 3.5 9.9 - - - +
29F GLN* 1.3 75.4 - - - +
31F ARG* 1.3 63.7 + - - +
33F ILE* 3.2 11.7 + - - +
34F VAL* 3.1 24.4 + - - +
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Residues in contact with ARG 31 (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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16F ALA* 4.1 10.6 - - + +
27F ARG* 3.0 14.7 + - + +
28F GLU* 3.1 11.4 + - - +
30F ALA* 1.3 74.8 - - - +
32F GLU* 1.3 59.6 + - - +
34F VAL* 3.1 23.2 + - - +
35F LYS* 2.8 40.6 + - + +
41F PRO 3.7 29.4 + - - -
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Residues in contact with GLU 32 (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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28F GLU* 2.9 24.1 + - - +
29F GLN* 3.1 24.2 + - - +
31F ARG* 1.3 74.1 - - + +
33F ILE* 1.3 65.6 + - + +
35F LYS* 3.3 28.4 + - + +
36F LEU* 3.0 40.1 + - + +
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Residues in contact with ILE 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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2F LEU* 4.7 9.2 - - + -
5F ALA* 4.4 7.4 - - + -
6F GLN* 4.0 41.3 - - + +
9F HIS* 3.7 25.5 + - + -
19F LEU* 3.8 17.9 - - + -
25F ILE* 3.9 30.3 - - + -
29F GLN* 2.9 20.7 + - + +
30F ALA* 3.2 9.8 + - - +
32F GLU* 1.3 76.4 - - + +
34F VAL* 1.3 63.1 + - - +
36F LEU* 3.7 6.8 + - - +
37F CYS* 3.6 11.4 + - - -
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Residues in contact with VAL 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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9F HIS* 3.7 21.8 - - + -
14F GLN 4.4 0.9 - - - +
15F ASN* 4.5 2.2 - - - -
16F ALA* 3.9 26.7 - - + +
19F LEU* 4.0 4.3 - - + -
30F ALA 3.1 13.9 + - - +
31F ARG* 3.4 32.5 - - - +
32F GLU 3.1 0.2 - - - -
33F ILE* 1.3 74.7 - - - +
35F LYS* 1.3 65.9 + - - +
37F CYS* 3.0 15.6 + - - +
40F CYS* 3.0 36.5 - - + +
41F PRO 4.4 1.8 - - - +
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Residues in contact with LYS 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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31F ARG* 2.8 30.5 + - + +
32F GLU* 3.4 37.2 + - - +
34F VAL* 1.3 74.6 - - - +
36F LEU* 1.3 75.5 + - + +
37F CYS 3.2 6.3 + - - +
40F CYS 4.1 6.8 - - - +
41F PRO 5.1 4.7 - - - -
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Residues in contact with LEU 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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6F GLN* 6.3 1.1 - - - +
32F GLU* 3.0 29.0 + - + +
33F ILE* 4.1 6.3 - - - +
35F LYS* 1.3 95.0 - - + +
37F CYS* 1.3 61.0 + - - +
38F PRO* 3.7 5.2 - - - +
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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