Contacts of the helix formed by residues 57 - 65 (chain A) in PDB entry 2Z9A
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 SER 57 (chain A).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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54A TYR* 2.9 17.7 + - - +
56A SER* 1.3 83.8 + - - +
58A ILE* 1.3 62.6 + - - +
59A LEU 3.4 2.9 - - - -
60A SER* 3.3 11.3 + - - -
61A ILE* 3.1 29.1 + - - +
75B LEU* 3.9 18.7 - - - +
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Residues in contact with ILE 58 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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28A ILE* 6.0 1.1 - - + -
32A PHE* 4.8 13.2 - - + -
50A VAL* 5.6 2.9 - - + -
54A TYR* 3.4 18.8 - - + +
55A GLY* 3.6 11.9 + - - +
56A SER 3.7 0.2 - - - -
57A SER* 1.3 74.6 - - - +
59A LEU* 1.3 68.1 + - - +
61A ILE* 3.2 7.5 + - - +
62A LEU* 2.9 29.2 + - + +
8B CYS* 5.0 2.5 - - - +
11B LEU* 4.2 28.7 - - + -
12B VAL* 4.6 20.0 - - + -
15B VAL* 4.3 25.6 - - + -
71B VAL* 4.7 5.1 - - + +
75B LEU* 4.4 20.4 - - + -
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Residues in contact with LEU 59 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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19A ILE 4.1 8.5 - - - +
20A ASP* 3.4 25.8 - - - +
21A ASN 4.7 2.5 - - - +
24A THR* 3.9 21.5 - - + -
25A GLU* 3.8 25.0 + - + +
28A ILE* 3.4 33.7 - - + +
55A GLY 5.0 0.8 + - - -
56A SER 5.6 0.7 - - - +
57A SER 3.4 0.6 - - - -
58A ILE* 1.3 80.4 - - - +
60A SER* 1.3 62.7 + - - +
62A LEU* 3.3 9.3 + - + +
63A LEU* 3.0 44.0 + - + +
19B ILE* 3.9 23.3 - - + -
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Residues in contact with SER 60 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
20A ASP* 4.4 20.9 - - - -
56A SER 5.6 1.1 + - - -
57A SER* 3.3 17.4 + - - +
58A ILE 3.3 0.2 - - - -
59A LEU* 1.3 79.2 - - - +
61A ILE* 1.3 71.2 + - - +
63A LEU* 3.3 1.5 + - - +
64A GLU* 2.9 44.1 + - - +
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Residues in contact with ILE 61 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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57A SER* 3.1 22.4 + - - +
58A ILE* 3.2 5.2 + - - +
60A SER* 1.3 88.0 + - - +
62A LEU* 1.3 61.9 + - - +
64A GLU* 3.4 17.8 + - - +
65A GLU* 3.2 40.2 + - + +
71B VAL* 3.7 24.5 - - + +
74B MET* 3.8 29.2 - - + +
75B LEU* 4.3 17.3 - - + -
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Residues in contact with LEU 62 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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58A ILE* 2.9 23.3 + - + +
59A LEU* 3.7 14.6 - - + +
60A SER 3.3 0.2 - - - -
61A ILE* 1.3 73.2 - - - +
63A LEU* 1.3 81.2 + - + +
65A GLU* 3.4 11.0 + - - +
66A VAL* 3.6 12.0 + - + +
12B VAL* 4.9 3.6 - - + -
15B VAL* 3.8 30.7 - - + -
16B THR* 4.2 14.4 - - - +
19B ILE* 4.7 6.3 - - + -
62B LEU* 5.2 0.4 - - + -
63B LEU* 4.8 10.8 - - + -
66B VAL* 3.7 31.0 - - + +
71B VAL* 4.0 23.5 - - + +
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Residues in contact with LEU 63 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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16A THR* 3.6 28.7 - - + +
19A ILE* 3.9 26.5 - - + -
20A ASP* 3.3 54.7 - - + +
59A LEU* 3.0 33.9 + - + +
60A SER 3.9 2.5 - - - +
62A LEU* 1.3 88.9 - - + +
64A GLU* 1.3 57.9 + - + +
66A VAL* 3.1 28.0 + - + +
87A GOL 4.3 3.1 + - - +
19B ILE* 5.4 1.6 - - + -
62B LEU* 4.5 12.1 - - + -
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Residues in contact with GLU 64 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
20A ASP* 5.6 1.6 - - - +
60A SER* 2.9 33.4 + - - +
61A ILE* 3.7 21.2 - - - +
62A LEU 3.4 0.2 - - - -
63A LEU* 1.3 76.3 - - - +
65A GLU* 1.3 60.4 + - + +
66A VAL 3.4 5.2 + - - +
87A GOL 4.0 34.3 + - - -
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Residues in contact with GLU 65 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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61A ILE* 3.2 16.7 + - + +
62A LEU* 3.4 6.3 + - - +
63A LEU 3.1 1.2 - - - -
64A GLU* 1.3 77.4 - - + +
66A VAL* 1.3 66.0 + - - +
67A SER* 3.3 5.9 + - - -
67B SER 4.3 3.8 + - - +
70B LEU* 3.2 31.6 - - + +
71B VAL* 3.1 30.6 + - - +
74B MET* 3.0 33.7 - - + +
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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