Contacts of the helix formed by residues 83 - 88 (chain L) in PDB entry 3SWD
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 PRO 83 (chain L).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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56L LEU* 4.3 8.3 - - + -
59L GLN* 3.7 22.9 - - - +
81L CYS* 3.0 19.4 - - - +
82L ALA* 1.3 85.6 - - - +
84L TYR* 1.3 67.9 + - - +
85L ASP* 4.4 5.4 - - + +
86L LEU* 3.0 28.0 + - + +
87L VAL* 3.2 10.9 + - - +
110L SER* 4.1 0.9 - - - -
142L TYR* 3.6 13.0 - - + +
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Residues in contact with TYR 84 (chain L).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
337K GLU* 5.2 0.2 + - - -
340K ARG* 2.6 41.7 - - - +
364K GLN* 3.4 52.9 + - + +
365K VAL* 4.0 12.8 + - - -
366K MET* 4.2 11.8 + - - +
390K ASP* 5.1 8.3 + - + +
83L PRO* 1.3 70.3 - - - +
85L ASP* 1.3 73.5 + - - +
86L LEU 3.1 0.2 + - - -
87L VAL* 4.2 0.4 - - + +
88L LYS* 3.0 58.5 + - + +
110L SER* 3.6 13.9 - - - +
111L LEU 5.7 0.4 - - - -
142L TYR* 2.9 20.4 + - + +
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Residues in contact with ASP 85 (chain L).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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364K GLN* 5.6 1.3 + - - -
83L PRO* 3.2 5.9 + - + +
84L TYR* 1.3 84.0 - - - +
86L LEU* 1.3 65.1 + - + +
88L LYS* 3.4 30.6 + - - +
89L THR* 3.3 23.4 - - - +
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Residues in contact with LEU 86 (chain L).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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52L THR* 3.7 22.4 - - + +
55L LYS* 4.0 16.4 - - + +
56L LEU* 3.3 48.2 - - + +
59L GLN* 3.2 36.3 - - - +
82L ALA* 5.8 0.2 - - - -
83L PRO* 3.0 21.5 + - + +
85L ASP* 1.3 78.3 - - + +
87L VAL* 1.3 67.3 + - + +
88L LYS 3.1 1.1 - - - -
89L THR* 2.9 25.3 + - - +
90L MET* 3.2 5.7 + - - +
93L SER* 4.2 7.0 + - - +
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Residues in contact with VAL 87 (chain L).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
82L ALA* 3.7 14.4 - - + +
83L PRO 3.2 12.5 + - - +
84L TYR* 4.2 1.1 - - + +
86L LEU* 1.3 75.5 - - + +
88L LYS* 1.3 63.3 + - - +
90L MET 3.0 16.8 + - - -
91L ARG* 3.3 13.1 + - - +
93L SER* 3.9 25.6 - - - -
94L ILE 5.1 1.6 - - - +
109L VAL* 4.3 2.5 - - + -
110L SER* 3.7 43.3 - - - +
112L PRO* 3.9 26.5 - - + -
115L QPA 4.7 0.3 + - - -
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Residues in contact with LYS 88 (chain L).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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366K MET* 5.2 18.9 - - + +
390K ASP* 3.9 19.5 + - - +
84L TYR* 3.0 49.2 + - + +
85L ASP* 3.4 37.6 + - - +
86L LEU 3.1 0.2 - - - -
87L VAL* 1.3 79.0 - - - +
89L THR* 1.3 69.5 + - + +
90L MET 3.6 0.2 + - - -
115L QPA 4.5 11.3 + - - -
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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