Contacts of the strand formed by residues 77 - 82 (chain A) in PDB entry 4ILG
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 LEU 77 (chain A).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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48A HIS* 5.0 1.1 - - + -
54A MET* 4.3 12.1 - - + -
56A TYR* 3.6 35.0 - - + +
58A TYR* 5.0 0.9 - - - +
71A TYR* 3.5 6.5 - - - -
72A ASP* 2.8 35.7 + - - +
75A ASP* 3.1 27.7 - - + +
76A GLY* 1.3 83.3 - - - +
78A TYR* 1.3 68.1 + - - +
79A LYS* 3.4 14.6 + - - +
139A TYR* 3.9 26.7 - - + +
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Residues in contact with TYR 78 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
6A PHE* 4.0 11.4 - + - -
8A SER 3.8 19.7 - - - -
9A ALA* 3.3 21.2 - - + +
10A PRO* 4.3 2.2 - - + -
11A ILE* 2.9 32.8 + - + -
13A VAL* 3.8 23.9 - - + +
46A PHE* 3.6 32.8 - + + -
48A HIS* 3.9 9.0 - - - -
56A TYR* 3.0 27.1 + - - +
58A TYR* 2.7 30.1 + - - -
69A ILE* 3.8 18.4 - - + -
70A GLN* 5.4 0.2 - - - -
71A TYR* 3.9 27.6 - + + +
77A LEU* 1.3 70.6 - - - +
79A LYS* 1.3 52.5 + - - +
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Residues in contact with LYS 79 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
58A TYR* 3.4 13.5 - - + +
69A ILE* 3.2 6.9 - - - +
70A GLN 2.8 42.6 + - - +
72A ASP* 3.0 31.0 + - + -
75A ASP* 2.6 37.2 + - - -
77A LEU* 3.7 23.6 - - - +
78A TYR* 1.3 73.6 - - - +
80A MET* 1.3 64.7 + - - +
81A MET* 3.9 18.5 + - + +
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Residues in contact with MET 80 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
4A VAL* 4.7 6.5 - - + -
44A ILE* 3.8 19.1 - - + -
58A TYR* 3.7 35.1 - - + -
60A PHE* 3.6 41.1 - - + -
67A PHE* 4.0 15.7 - - + -
68A TYR 3.3 9.2 - - - +
69A ILE* 3.6 14.0 - - + +
79A LYS* 1.3 78.3 - - - +
81A MET* 1.3 73.8 + - - +
137A PHE* 3.2 52.3 - - + -
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Residues in contact with MET 81 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
67A PHE* 3.3 4.3 - - - +
68A TYR* 2.8 67.1 + - + +
70A GLN* 4.1 34.1 - - + +
72A ASP* 5.5 5.2 - - + -
79A LYS* 4.1 22.9 - - + +
80A MET* 1.3 79.3 - - - +
82A GLU* 1.3 61.5 + - - +
137A PHE* 3.9 10.5 - - - -
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Residues in contact with GLU 82 (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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64A MET 4.5 0.2 - - - +
65A GLY* 4.1 8.6 - - - -
66A ASN 3.4 13.5 + - - +
67A PHE* 3.8 20.1 - - + -
68A TYR* 4.0 4.8 + - - -
81A MET* 1.3 75.0 - - - +
83A GLU* 1.3 66.2 + - - +
84A ARG* 3.3 58.9 + - - +
136A GLN* 3.1 40.0 + - - +
137A PHE* 3.8 8.2 - - + -
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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
------------------------------------------------------------
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