Contacts of the helix formed by residues 1165 - 1169 (chain A) in PDB entry 5IYB
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 THR1165 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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1163A HIS* 4.0 25.6 - - + +
1164A THR* 1.3 79.8 - - - +
1166A LEU* 1.3 59.7 + - - +
1167A ARG* 4.0 6.9 + - - +
1168A LYS* 2.8 55.0 + - - +
1169A VAL* 3.4 5.2 - - - +
1293A LEU 3.8 11.2 + - - -
1294A THR* 4.3 12.7 - - - +
1296A MET 3.4 14.6 - - - +
1297A THR* 5.0 1.6 - - + -
1298A LEU* 3.9 3.4 - - - -
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Residues in contact with LEU1166 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1165A THR* 1.3 73.2 - - - +
1167A ARG* 1.3 56.7 + - - +
1169A VAL* 2.9 31.2 + - + -
1170A THR* 2.9 26.7 + - - +
1214A VAL* 6.1 1.6 - - + -
1216A LEU* 5.1 7.9 - - + -
1231A ILE* 4.6 15.5 - - + -
1235A ILE* 4.9 10.3 - - + -
1257A LEU* 5.6 5.4 - - + -
1292A MET* 3.6 56.1 - - + +
1293A LEU* 3.7 11.3 + - + -
1296A MET* 3.4 14.3 + - + -
1298A LEU* 3.9 23.6 - - + +
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Residues in contact with ARG1167 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1165A THR* 3.1 7.4 + - - +
1166A LEU* 1.3 78.3 - - - +
1168A LYS* 1.3 62.2 + - + +
1169A VAL 3.5 0.2 + - - -
1170A THR* 3.7 14.1 + - - +
1289A GLU* 3.8 9.1 + - - -
1290A SER* 3.3 30.3 + - - +
1293A LEU* 3.4 52.9 + - + +
1294A THR* 3.4 15.1 + - - +
56I ASN* 5.4 6.9 - - - +
57I LYS* 5.7 13.7 - - + +
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Residues in contact with LYS1168 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1163A HIS* 2.6 25.6 + - - -
1164A THR* 3.8 14.6 - - + +
1165A THR* 2.8 50.3 + - - +
1167A ARG* 1.3 79.4 - - + +
1169A VAL* 1.3 57.7 + - - +
1170A THR 4.8 1.6 - - - +
1220A HIS* 3.4 27.3 + - + +
1224A ARG* 5.6 3.8 - - - +
1305A SER* 4.1 3.2 - - - +
1306A LYS* 3.3 50.3 - - + +
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Residues in contact with VAL1169 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
1164A THR* 3.6 19.3 - - + -
1165A THR 3.4 16.4 - - - +
1166A LEU* 2.9 18.5 + - + +
1168A LYS* 1.3 79.4 - - - +
1170A THR* 1.3 62.5 + - - +
1171A ALA 3.4 1.4 + - - -
1216A LEU* 3.3 25.3 - - + +
1217A ASP* 4.4 7.2 + - - +
1220A HIS* 4.9 18.1 - - + +
1221A MET* 4.3 30.5 - - + +
1224A ARG* 5.5 7.0 - - + -
1226A LEU* 5.5 1.8 - - + -
1231A ILE* 5.7 0.4 - - + -
1298A LEU* 4.2 13.7 - - + -
1299A GLN* 5.6 0.2 - - - +
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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
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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