Contacts of the helix formed by residues 801 - 805 (chain A) in PDB entry 1SO2
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 CYS 801 (chain A).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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754A THR 3.4 26.7 - - - +
755A ARG 3.9 9.9 - - - +
757A VAL* 4.6 0.9 - - - -
760A LEU* 3.7 8.8 - - - +
762A GLN* 2.7 15.6 + - - +
788A SER* 6.1 0.9 - - - -
794A ASN* 3.5 20.0 - - - +
800A GLY* 1.3 75.1 - - - +
802A LEU* 1.3 65.9 + - - +
803A SER* 3.0 24.0 - - - +
804A SER* 3.0 28.1 + - - -
805A ASN* 3.9 3.6 + - - -
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Residues in contact with LEU 802 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
752A LEU 4.0 17.0 - - - +
753A THR* 3.8 23.6 + - + +
755A ARG 5.3 0.2 + - - -
757A VAL* 5.2 3.3 - - + +
760A LEU* 3.7 20.4 - - + -
801A CYS* 1.3 72.6 - - - +
803A SER* 1.3 51.8 + - - +
804A SER 3.0 0.7 - - - -
805A ASN* 2.8 8.9 + - - +
806A ILE* 2.8 54.7 + - + +
811A LEU* 4.9 0.4 - - - -
919A TRP* 4.0 19.7 - - + -
928A VAL* 4.5 11.0 - - + -
932A CYS* 5.3 0.7 - - + -
1003A TYR* 3.6 24.7 - - + +
1008A LEU* 4.5 21.3 - - + +
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Residues in contact with SER 803 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
753A THR 3.0 19.0 + - - -
754A THR* 4.3 6.2 - - - +
786A TYR* 3.4 25.3 - - - +
787A ILE* 3.7 38.2 + - - +
788A SER* 4.6 6.1 - - - -
789A SER 5.2 0.3 + - - -
801A CYS* 3.1 22.0 - - - +
802A LEU* 1.3 76.5 - - - +
804A SER* 1.3 55.4 + - - +
805A ASN 3.3 0.2 - - - -
806A ILE 3.5 4.4 - - - +
811A LEU* 3.8 14.1 - - - -
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Residues in contact with SER 804 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
762A GLN* 3.1 42.2 + - - -
763A ILE* 4.4 0.9 - - - +
764A HIS 2.6 40.3 + - - +
765A ASN* 3.7 16.1 - - - +
786A TYR* 3.5 6.2 - - - -
787A ILE 5.5 1.1 + - - -
801A CYS* 3.0 12.5 + - - -
803A SER* 1.3 78.5 + - - +
805A ASN* 1.3 68.8 + - - +
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Residues in contact with ASN 805 (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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760A LEU* 4.6 5.0 - - - +
761A GLN 3.0 19.4 - - - +
762A GLN* 3.8 3.6 - - - +
763A ILE* 3.4 29.6 - - - +
786A TYR* 3.8 7.6 + - - -
801A CYS 4.3 6.2 + - - -
802A LEU* 2.8 8.8 + - - +
804A SER* 1.3 94.9 + - - +
806A ILE* 1.3 60.6 + - - +
807A PRO* 3.8 6.8 - - - +
919A TRP* 3.5 57.6 + - + +
925A ARG* 3.9 9.4 + - - -
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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
------------------------------------------------------------
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