Contacts of the helix formed by residues 1071 - 1075 (chain B) in PDB entry 1KEK
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 CYS1071 (chain B).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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991B THR* 4.0 12.1 - - + +
993B VAL* 5.0 0.4 - - + -
995B SER* 3.2 26.2 - - - -
1070B THR* 1.3 76.7 - - - +
1072B ILE* 1.3 67.1 + - - +
1073B ASN* 3.4 18.2 - - - +
1074B GLN* 3.0 37.8 + - + +
1075B GLY 4.0 1.6 + - - -
1076B LEU* 5.0 1.4 + - - +
1080B MET* 3.4 15.7 - - - +
3235B SF4 2.3 36.6 - - - -
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Residues in contact with ILE1072 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1195A CYS* 3.8 16.8 - - + +
1196A THR* 3.4 19.7 + - - +
1197A ARG* 3.4 39.0 - - - +
1198A ASP* 3.5 7.2 - - + +
1203A MET* 4.6 0.9 - - + -
1215A ASN* 4.8 4.3 - - + +
812B CYS* 3.7 33.7 - - + -
813B SER 4.9 1.1 - - - +
1071B CYS* 1.3 73.2 - - - +
1073B ASN* 1.3 65.2 + - - +
1074B GLN 3.1 1.0 + - - -
1075B GLY* 3.1 12.6 + - - +
1076B LEU 5.9 0.4 - - - +
1080B MET* 3.6 24.9 - - + +
3235B SF4 3.5 22.4 - - - -
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Residues in contact with ASN1073 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1188A PHE* 3.3 38.5 - - + +
1196A THR* 2.9 27.9 + - - -
1203A MET* 3.8 24.2 - - - +
993B VAL* 3.5 15.4 - - + +
995B SER* 3.3 29.8 - - - -
999B GLY* 3.3 19.5 - - - +
1071B CYS* 3.1 12.9 - - + -
1072B ILE* 1.3 79.3 - - - +
1074B GLN* 1.3 60.9 + - - +
1075B GLY 3.4 0.7 + - - -
1133B ARG* 4.6 2.9 - - - +
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Residues in contact with GLN1074 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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990B ASP 4.8 0.4 + - - -
991B THR* 2.8 31.0 + - - +
992B GLU* 4.7 0.8 - - - +
993B VAL* 5.7 2.0 - - + -
1068B TYR* 4.4 9.4 + - - -
1069B ALA 3.0 21.0 + - - -
1070B THR* 3.2 11.8 - - - +
1071B CYS* 3.0 32.3 + - + +
1073B ASN* 1.3 77.2 - - + +
1075B GLY* 1.3 63.5 + - - +
1076B LEU* 4.2 11.0 - - + +
1131B GLN* 3.2 16.6 - - - +
1133B ARG* 3.2 63.9 + - - +
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Residues in contact with GLY1075 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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1192A ALA* 5.1 3.7 - - - +
1193A GLU* 5.4 1.6 + - - +
1194A PHE* 5.8 1.1 - - - -
1195A CYS 5.9 0.4 - - - -
1196A THR* 3.9 10.3 - - - -
1071B CYS 4.0 0.2 + - - -
1072B ILE 3.1 14.4 + - - -
1073B ASN 3.2 1.2 - - - -
1074B GLN* 1.3 80.2 - - - +
1076B LEU* 1.3 68.0 + - - +
1077B ARG* 3.0 4.9 + - - +
1131B GLN* 3.5 0.2 - - - -
1132B ASN* 2.8 38.0 + - - +
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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