Contacts of the helix formed by residues 92 - 102 (chain A) in PDB entry 2OCA
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 SER 92 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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90A GLU 4.3 0.2 - - - -
91A LEU* 1.3 76.5 - - - +
93A ARG* 1.3 63.8 + - - +
94A LYS* 3.2 11.8 + - - +
95A ASP* 3.0 35.5 + - - +
96A PHE* 3.0 19.8 + - - +
123A PHE* 3.9 1.3 - - - -
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Residues in contact with ARG 93 (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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92A SER* 1.3 73.7 - - - +
94A LYS* 1.3 57.3 + - - +
96A PHE* 3.3 8.6 + - - +
97A ASP* 3.0 61.6 + - - +
116A TRP 5.3 0.2 + - - -
119A LYS* 3.6 31.1 + - - +
120A ASP* 2.8 28.2 + - - +
123A PHE* 3.6 56.9 - - + +
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Residues in contact with LYS 94 (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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92A SER* 3.0 10.6 + - - +
93A ARG* 1.3 77.5 - - - +
95A ASP* 1.3 72.6 + - - +
97A ASP* 3.4 7.2 + - - +
98A GLU* 3.0 39.3 + - + +
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Residues in contact with ASP 95 (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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90A GLU 5.6 0.2 - - - +
91A LEU* 4.3 14.7 - - + -
92A SER* 3.0 31.7 + - - +
94A LYS* 1.3 82.2 - - - +
96A PHE* 1.3 62.2 + - - +
98A GLU* 3.3 8.5 + - - +
99A TRP* 2.8 30.9 + - - +
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Residues in contact with PHE 96 (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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91A LEU* 4.2 23.7 - - + +
92A SER 3.0 12.6 + - - +
93A ARG* 3.5 13.5 - - - +
95A ASP* 1.3 78.2 - - - +
97A ASP* 1.3 67.7 + - - +
99A TRP* 3.2 28.5 + + - +
100A LEU* 2.9 57.6 + - + +
119A LYS* 3.7 22.0 - - + -
122A VAL* 3.7 37.0 - - + -
123A PHE* 3.7 26.9 - + + -
126A LEU* 4.1 7.2 - - + -
147A LEU* 6.1 0.2 - - + -
151A TYR* 5.4 0.7 - + - -
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Residues in contact with ASP 97 (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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93A ARG* 3.0 59.9 + - - +
94A LYS* 3.8 6.1 - - - +
96A PHE* 1.3 79.8 - - - +
98A GLU* 1.3 52.8 + - - +
100A LEU* 3.2 10.3 + - - +
101A SER* 2.7 37.9 + - - -
119A LYS* 4.9 7.2 + - - -
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Residues in contact with GLU 98 (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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94A LYS* 3.0 30.7 + - - +
95A ASP* 3.4 10.5 - - - +
97A ASP* 1.3 76.5 - - - +
99A TRP* 1.3 62.8 + - - +
101A SER* 2.9 28.4 + - - -
102A LYS* 3.2 50.1 + - - +
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Residues in contact with TRP 99 (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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91A LEU* 6.0 2.2 - - + -
95A ASP 2.8 20.4 + - - +
96A PHE* 3.4 29.4 - + - +
98A GLU* 1.3 73.7 - - - +
100A LEU* 1.3 94.5 + - + +
102A LYS* 3.3 16.7 + - - +
103A LEU* 3.5 29.5 + - + +
126A LEU* 5.3 0.4 - - + -
147A LEU* 3.7 29.8 - - + -
150A ARG* 4.0 17.0 - - + -
151A TYR* 3.7 40.7 - + + -
154A GLU* 2.9 27.2 + - - +
155A ASN* 5.6 1.6 - - - +
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Residues in contact with LEU 100 (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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96A PHE* 2.9 45.8 + - + +
97A ASP* 3.5 8.3 - - - +
99A TRP* 1.3 92.9 - - + +
101A SER* 1.3 60.0 + - - +
103A LEU* 3.1 43.7 + - + +
105A ILE* 4.9 2.0 - - + +
113A GLU* 4.6 8.7 - - - +
114A PRO* 4.7 12.8 - - + -
119A LYS* 3.5 32.8 - - + -
147A LEU* 3.9 20.4 - - + -
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Residues in contact with SER 101 (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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97A ASP 2.7 18.8 + - - -
98A GLU* 2.9 26.3 + - - -
100A LEU* 1.3 73.1 - - - +
102A LYS* 1.3 62.7 + - - +
103A LEU 3.2 5.9 + - - +
111A ARG* 4.4 9.2 + - - -
113A GLU* 4.7 9.5 - - - +
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Residues in contact with LYS 102 (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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98A GLU* 3.2 53.3 + - + +
99A TRP* 3.8 9.0 - - - +
100A LEU 3.2 1.2 - - - -
101A SER* 1.3 80.5 - - - +
103A LEU* 1.3 60.7 + - - +
104A GLU* 4.0 5.9 + - - +
111A ARG* 5.6 0.7 - - - -
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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