Contacts of the helix formed by residues 1029 - 1035 (chain A) in PDB entry 3SQD
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 CYS1029 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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981A THR* 4.6 0.2 - - - -
983A GLY 3.6 26.2 - - - -
984A ILE* 4.0 12.8 - - + -
985A CYS* 5.0 3.4 - - + +
1028A SER* 1.3 79.2 + - - +
1030A GLU* 1.3 68.4 + - - +
1031A ASN* 4.0 10.3 - - - -
1032A ASP* 2.9 35.6 + - - -
1033A LEU* 3.2 11.6 + - - +
1048A ASN* 5.6 0.4 - - - -
1068A PHE* 3.8 12.1 - - - -
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Residues in contact with GLU1030 (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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1029A CYS* 1.3 74.9 - - - +
1031A ASN* 1.3 68.6 + - - +
1032A ASP 3.0 2.3 + - - -
1033A LEU* 3.3 22.3 + - + +
1034A HIS* 5.1 0.5 + - - -
1068A PHE* 4.4 12.7 - - + -
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Residues in contact with ASN1031 (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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983A GLY* 5.4 5.9 + - - +
1029A CYS* 3.2 12.6 + - - -
1030A GLU* 1.3 80.8 - - - +
1032A ASP* 1.3 64.3 + - - +
1033A LEU 3.6 0.4 - - - -
1034A HIS* 3.3 19.0 + - - -
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Residues in contact with ASP1032 (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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981A THR* 2.9 32.2 + - - +
982A PRO* 4.8 0.7 - - - -
983A GLY* 2.8 42.1 + - - -
1028A SER* 3.5 10.3 + - - +
1029A CYS* 2.9 9.7 + - - +
1031A ASN* 1.3 86.8 - - - +
1033A LEU* 1.3 60.9 + - - +
1034A HIS* 3.0 12.2 + - - -
1035A LEU* 2.8 38.8 + - + +
1036A CYS* 3.9 1.0 + - - -
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Residues in contact with LEU1033 (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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1028A SER* 3.9 20.2 - - - +
1029A CYS 3.2 18.1 + - - +
1030A GLU* 3.3 15.6 + - + +
1032A ASP* 1.3 76.8 - - - +
1034A HIS* 1.3 57.0 + - - +
1035A LEU 3.0 0.2 - - - -
1036A CYS* 2.9 23.1 + - - +
1037A ARG* 3.4 11.1 + - - +
1040A PHE* 4.0 31.0 - - + -
1068A PHE* 3.7 35.0 - - + -
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Residues in contact with HIS1034 (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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1030A GLU 5.1 0.2 + - - -
1031A ASN 3.3 27.5 + - - -
1032A ASP* 3.0 8.8 + - - -
1033A LEU* 1.3 77.6 - - - +
1035A LEU* 1.3 91.2 + - + +
1037A ARG* 3.1 54.4 + - - +
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Residues in contact with LEU1035 (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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981A THR* 4.4 7.2 - - + -
982A PRO* 4.2 22.4 - - + -
1006A GLN* 4.6 21.8 + - - +
1032A ASP* 2.8 33.6 + - + +
1034A HIS* 1.3 106.4 - - + +
1036A CYS* 1.3 62.4 + - - +
1037A ARG 3.4 0.6 + - - -
1038A GLU* 5.1 1.4 + - - +
1039A TYR* 4.1 14.4 - - - -
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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