Contacts of the strand formed by residues 72 - 77 (chain C) in PDB entry 3ARE
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 HIS 72 (chain C).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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21C GLN* 2.8 23.9 + - - -
22C CYS 3.5 9.9 - - - -
23C ASN* 3.1 29.2 - - - +
24C TYR* 3.8 4.2 - - - -
65C THR* 5.9 0.2 - - - -
66C LEU* 3.8 3.7 - - - +
67C ASP* 3.0 32.8 + - - +
70C ALA* 3.7 18.6 - - + +
71C LYS* 1.3 77.3 - - - +
73C SER* 1.3 74.4 + - - +
74C THR* 3.2 20.9 - - - -
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Residues in contact with SER 73 (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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20C LEU 4.6 0.2 - - - -
21C GLN* 3.6 1.0 - - - -
22C CYS* 3.0 37.4 + - - -
32C LEU* 3.7 29.8 - - - +
34C TRP* 3.3 20.7 + - - -
49C LEU* 5.0 1.9 - - - +
65C THR 2.8 21.6 + - - -
66C LEU* 4.5 4.5 - - - +
72C HIS* 1.3 82.9 + - - +
74C THR* 1.3 66.3 + - - +
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Residues in contact with THR 74 (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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19C VAL* 3.6 11.7 - - + -
20C LEU 3.2 12.6 - - - +
21C GLN* 3.4 21.0 + - - +
64C ALA* 3.3 6.3 - - - +
65C THR* 3.1 39.1 + - - -
72C HIS* 3.2 26.3 - - - -
73C SER* 1.3 77.2 + - - +
75C LEU* 1.3 59.6 + - - +
76C HIS* 3.5 25.8 - - + +
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Residues in contact with LEU 75 (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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18C SER 3.6 3.6 - - - +
19C VAL* 3.7 0.9 - - - -
20C LEU* 2.9 47.7 + - + +
34C TRP* 3.6 51.6 - - + -
46C LEU* 4.1 20.4 - - + -
47C THR* 5.0 4.9 - - + -
62C TYR* 4.2 17.5 - - + -
63C SER 3.8 12.3 - - - +
64C ALA* 4.0 13.5 - - + -
74C THR* 1.3 72.9 - - - +
76C HIS* 1.3 72.2 + - - +
77C ILE* 4.9 4.8 - - + +
88C TYR* 4.1 14.1 - - + -
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Residues in contact with HIS 76 (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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18C SER 3.5 4.3 - - - +
19C VAL* 4.0 21.4 - - + +
60C ARG 3.8 0.6 - - - +
62C TYR* 3.3 5.9 - - - -
63C SER* 2.8 58.5 + - - +
64C ALA* 5.0 0.7 - - - -
65C THR* 4.8 10.4 + - + +
74C THR* 3.5 35.7 - - + +
75C LEU* 1.3 76.9 - - - +
77C ILE* 1.3 64.6 + - - +
78C THR* 4.0 4.7 - - - +
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Residues in contact with ILE 77 (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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17C ASN* 3.5 6.6 - - - +
18C SER* 3.0 43.7 + - - +
20C LEU* 5.9 5.2 - - + -
60C ARG* 3.9 13.7 - - + +
62C TYR* 3.8 25.1 - - + -
75C LEU* 4.9 10.3 - - + +
76C HIS* 1.3 77.9 - - - +
78C THR* 1.3 65.0 + - - +
79C ALA 3.7 0.3 + - - -
80C THR* 3.8 29.0 + - + -
84C ASP* 4.0 11.9 - - - +
88C TYR* 5.2 5.6 - - + +
112C LEU* 5.1 9.4 - - + -
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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