Contacts of the strand formed by residues 108 - 113 (chain E) in PDB entry 1XSK
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 108 (chain E).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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63E GLY 3.6 13.7 - - - +
65E VAL* 4.0 20.7 - - + +
104E LYS* 3.3 1.8 - - - +
105E SER 2.8 36.4 + - - +
107E ASN* 1.3 78.6 - - - +
109E SER* 1.3 69.5 + - - +
122E PHE* 4.6 3.1 - - + -
123E LEU 3.3 17.9 - - - +
124E ARG* 4.7 0.9 - - - +
129E ILE* 3.8 26.5 - - + -
241E VAL* 3.2 43.5 - - + +
243E ASP* 3.9 24.8 + - + +
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Residues in contact with SER 109 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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65E VAL* 4.6 2.7 - - - -
102E GLU* 3.5 20.1 + - - -
103E PHE 3.0 13.5 - - - -
104E LYS* 3.6 20.4 - - - -
107E ASN 5.2 0.2 - - - -
108E LEU* 1.3 80.7 - - - +
110E ALA* 1.3 59.1 + - - +
111E ARG 4.1 0.2 - - - -
121E ASP 3.7 0.2 - - - +
122E PHE* 3.2 8.9 - - - +
123E LEU* 2.9 55.8 + - - +
126E GLY 5.6 0.3 + - - -
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Residues in contact with ALA 110 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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32E MET* 5.3 0.7 - - - +
57E PHE* 3.6 38.9 - - + -
65E VAL* 3.9 17.0 - - + +
101E ALA 3.8 0.3 - - - +
102E GLU* 3.2 4.1 - - - -
103E PHE* 2.7 36.5 + - + +
109E SER* 1.3 73.5 - - - +
111E ARG* 1.3 60.3 + - - +
112E VAL* 5.5 1.2 - - - +
120E LEU* 4.7 1.1 - - + -
121E ASP 3.4 5.4 - - - -
122E PHE* 3.9 10.5 - - + -
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Residues in contact with ARG 111 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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100E TYR* 3.5 57.8 + - + -
101E ALA 3.3 9.9 - - - +
102E GLU* 3.5 27.3 + - + +
110E ALA* 1.3 74.1 - - - +
112E VAL* 1.3 65.1 + - - +
113E SER* 4.0 1.5 + - - -
119E SER 3.3 3.3 - - - +
120E LEU* 3.6 1.5 - - - +
121E ASP* 2.6 64.8 + - + +
123E LEU* 3.7 27.3 - - + +
126E GLY 5.8 2.0 + - - -
128E ARG* 6.2 0.2 - - - +
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Residues in contact with VAL 112 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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22E VAL* 3.4 31.0 - - + -
32E MET* 6.2 1.1 - - - -
34E VAL* 4.5 7.6 - - + -
55E LEU* 5.4 0.2 - - + -
57E PHE* 3.8 35.7 - - + -
100E TYR* 3.4 6.5 - - - -
101E ALA* 2.8 42.4 + - + +
110E ALA 5.5 0.7 - - - +
111E ARG* 1.3 77.0 - - - +
113E SER* 1.3 65.2 + - - +
114E LYS* 3.5 1.4 + - - +
118E TRP* 3.6 22.9 - - + -
119E SER 3.2 6.1 - - - +
120E LEU* 4.3 11.0 - - + -
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Residues in contact with SER 113 (chain E).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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22E VAL* 3.6 13.6 - - - +
100E TYR* 3.3 27.5 + - - -
111E ARG* 4.0 2.6 + - - -
112E VAL* 1.3 73.8 - - - +
114E LYS* 1.3 63.9 + - - +
115E GLY 4.4 0.5 - - - +
117E PHE* 3.1 25.3 - - - +
118E TRP* 4.0 9.0 - - - -
119E SER* 2.8 32.5 + - - -
121E ASP* 4.6 4.3 + - - -
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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