Contacts of the strand formed by residues 166 - 169 (chain K) in PDB entry 1R4N
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 VAL 166 (chain K).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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104K LYS* 3.3 23.1 - - + +
106K LYS* 4.2 15.3 - - + +
112K GLU* 5.2 7.0 - - - +
144K ILE 4.6 0.9 - - - +
145K TYR* 3.5 18.2 - - - -
146K SER 5.3 0.3 + - - -
164K GLY 4.1 9.9 - - - +
165K SER* 1.3 75.1 - - - +
167K LEU* 1.3 70.7 + - - +
168K HIS* 3.9 28.9 + - + +
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Residues in contact with LEU 167 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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103K ILE* 4.7 11.7 - - + -
104K LYS 2.9 10.2 + - - +
105K VAL* 3.3 20.7 - - + -
106K LYS* 2.8 28.1 + - - +
126K ILE* 4.1 23.8 - - + -
143K LEU* 4.0 5.8 - - + -
144K ILE 4.0 2.2 - - - -
145K TYR* 3.4 33.0 - - + -
150K MET* 3.1 37.2 - - + -
161K ILE* 4.2 19.7 - - + -
165K SER* 4.7 3.8 - - - +
166K VAL* 1.3 75.3 - - - +
168K HIS* 1.3 64.0 + - - +
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Residues in contact with HIS 168 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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331F TYR* 3.7 15.5 - + - -
333F TYR* 3.3 61.0 + + + -
106K LYS* 3.6 34.6 + - + +
142K ARG 3.3 2.3 - - - +
143K LEU* 3.4 3.7 - - - -
144K ILE* 2.8 39.3 + - - +
166K VAL* 3.9 28.0 + - + +
167K LEU* 1.3 73.8 - - - +
169K LEU* 1.3 65.5 + - - +
170K VAL* 3.6 0.3 + - - +
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Residues in contact with LEU 169 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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331F TYR* 4.4 3.3 + - - -
333F TYR* 4.9 0.3 - - - +
105K VAL* 4.2 11.2 - - + +
106K LYS 3.0 14.1 + - - +
107K THR* 3.7 32.1 - - - +
108K LEU* 3.6 21.1 - - + +
130K VAL* 4.2 12.3 - - + -
136K ILE* 3.8 28.3 - - + -
141K GLN* 3.7 35.9 - - + +
142K ARG 3.5 8.7 - - - +
143K LEU* 4.0 16.4 - - + +
167K LEU 4.3 0.2 + - - -
168K HIS* 1.3 77.7 - - - +
170K VAL* 1.3 63.5 + - - +
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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