Contacts of the helix formed by residues 73 - 83 (chain C) in PDB entry 6S6A
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 GLY 73 (chain C).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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71C ARG 3.3 1.2 - - - -
72C SER* 1.3 72.7 - - - +
74C LYS* 1.3 55.0 + - - +
76C SER* 3.2 8.3 - - - -
77C ILE* 3.0 39.4 + - - +
178C HIS* 4.0 2.9 + - - -
401C GDP 2.8 43.4 + - - -
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Residues in contact with LYS 74 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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66C LEU* 3.3 29.9 - - + +
67C MET* 4.1 5.8 - - - -
68C GLY 3.4 34.3 - - - +
69C LEU 3.6 6.7 + - - -
70C ARG* 4.6 2.1 - - - +
72C SER* 3.6 13.0 - - - +
73C GLY* 1.3 67.6 - - - +
75C SER* 1.3 60.4 + - - +
77C ILE* 2.7 24.0 + - - +
78C GLN* 2.8 13.5 + - - +
114C ILE* 3.6 28.5 - - + +
115C TRP 5.3 4.9 - - - +
143C VAL* 4.4 7.6 - - + +
401C GDP 2.4 56.4 + - - +
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Residues in contact with SER 75 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
74C LYS* 1.3 78.4 - - - +
76C SER* 1.3 54.8 + - - +
78C GLN* 3.7 11.5 - - - +
79C LYS* 2.8 34.7 + - - +
114C ILE* 3.7 16.2 - - - -
401C GDP 2.9 23.4 + - - -
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Residues in contact with SER 76 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
73C GLY 3.2 12.1 - - - -
75C SER* 1.3 78.4 + - - +
77C ILE* 1.3 53.4 + - - +
79C LYS* 3.7 8.3 - - - +
80C VAL* 3.2 35.0 + - - +
220C ILE* 4.2 15.0 - - - -
401C GDP 2.6 53.4 + - - -
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Residues in contact with ILE 77 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
66C LEU* 4.0 14.8 - - + -
73C GLY 3.0 13.4 + - - +
74C LYS* 2.7 15.7 + - - +
76C SER* 1.3 67.7 - - - +
78C GLN* 1.3 62.5 + - - +
80C VAL* 3.4 2.0 + - - -
81C VAL* 3.1 32.0 + - - +
112C PHE* 5.1 0.4 - - + -
143C VAL* 3.9 24.2 - - + -
176C PHE* 4.7 3.8 - - + -
178C HIS* 3.6 44.6 - - + +
220C ILE* 4.1 6.1 - - + -
225C ILE* 3.8 30.3 - - + -
229C PHE* 3.9 18.8 - - + -
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Residues in contact with GLN 78 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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74C LYS 2.8 14.6 + - - +
75C SER* 3.7 15.5 - - - +
77C ILE* 1.3 72.8 - - - +
79C LYS* 1.3 57.0 + - - +
82C PHE* 3.1 31.9 + - + +
83C HIS* 3.4 12.8 + - - +
112C PHE* 3.7 42.3 + - + -
113C GLN* 5.1 0.6 - - - +
114C ILE* 3.8 28.0 - - + +
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Residues in contact with LYS 79 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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75C SER 2.8 20.0 + - - +
76C SER* 3.7 8.7 - - - +
78C GLN* 1.3 73.6 + - - +
80C VAL* 1.3 71.4 + - + +
83C HIS* 3.0 41.1 + - - +
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Residues in contact with VAL 80 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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76C SER 3.2 18.0 + - - +
77C ILE* 3.4 3.8 + - - +
79C LYS* 1.3 84.4 - - + +
81C VAL* 1.3 61.4 + - + +
83C HIS* 3.9 10.7 - - - -
220C ILE* 3.9 39.5 - - + +
225C ILE* 4.4 11.2 - - + -
226C PHE* 3.7 33.3 - - + -
267C LYS* 4.5 4.0 + - - -
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Residues in contact with VAL 81 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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77C ILE 3.1 17.7 + - - +
79C LYS 4.2 0.2 - - - -
80C VAL* 1.3 84.6 - - + +
82C PHE* 1.3 88.2 + - + +
83C HIS* 4.3 2.6 + - - -
225C ILE* 4.1 25.1 - - + +
226C PHE* 4.2 16.6 - - + -
229C PHE* 4.3 15.0 - - + -
265C VAL 3.5 5.9 - - - +
266C SER* 3.2 43.7 - - - +
267C LYS* 5.1 0.5 - - - -
268C ILE* 4.2 9.9 - - + -
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Residues in contact with PHE 82 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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78C GLN* 3.1 17.5 + - + +
81C VAL* 1.3 96.8 - - + +
83C HIS* 1.3 79.3 + - - +
108C SER* 3.9 31.4 - - - -
110C VAL* 4.6 10.3 - - + -
112C PHE* 3.5 53.8 - + + -
229C PHE* 4.1 18.6 - + - -
265C VAL* 3.8 17.6 - - + +
266C SER* 4.1 13.7 - - - -
268C ILE* 4.5 3.8 - - + -
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Residues in contact with HIS 83 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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78C GLN* 3.4 12.5 + - - +
79C LYS* 3.0 39.4 + - - +
80C VAL* 3.9 15.0 - - - -
81C VAL 4.4 3.4 - - - -
82C PHE* 1.3 90.4 - - - +
265C VAL* 3.8 24.7 + - + -
267C LYS* 4.7 12.8 - - - -
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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