Contacts of the helix formed by residues 93 - 98 (chain A) in PDB entry 4D87
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 GLU 93 (chain A).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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10A ASN* 3.8 27.0 + - - +
12A LEU* 6.0 2.2 - - + +
91A TYR* 3.9 16.5 + - + -
92A TRP* 1.3 74.5 - - - +
94A TRP* 1.3 62.5 + - - +
95A GLU* 3.1 14.8 - - - +
96A THR* 2.8 49.3 + - + +
97A ASP* 3.5 4.3 + - - +
233A ASN* 3.9 4.5 - - - +
236A ARG* 3.2 34.6 + - - +
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Residues in contact with TRP 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 TRP* 2.9 48.9 + + + +
93A GLU* 1.3 71.4 - - - +
95A GLU* 1.3 77.8 + - - +
96A THR 3.0 0.2 - - - -
97A ASP* 3.1 5.9 + - - +
98A ALA* 3.0 23.9 + - - +
162A LEU* 3.6 27.0 - - + +
163A PRO* 2.5 44.1 - - + +
168A VAL* 4.1 15.9 - - + -
194A LEU* 5.2 6.5 - - + -
203A LEU* 3.9 24.0 - - + -
204A HIS* 4.9 1.1 - - - -
207A VAL* 3.4 19.5 - - + -
230A HIS* 2.9 27.6 - + - -
233A ASN* 3.3 20.9 - - - +
234A VAL* 4.2 13.2 - - + -
237A ILE* 5.3 5.4 - - + -
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Residues in contact with GLU 95 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
93A GLU* 3.2 21.8 - - - +
94A TRP* 1.3 79.0 + - + +
96A THR* 1.3 63.9 + - + +
98A ALA* 3.8 7.7 + - - +
99A GLN* 4.1 6.2 + - - -
163A PRO 4.3 4.9 - - - -
164A THR 4.2 0.9 - - - -
165A ARG* 2.9 58.2 + - + +
168A VAL* 3.8 21.7 - - + +
233A ASN* 3.3 12.4 + - - -
236A ARG* 2.8 26.8 + - - -
237A ILE* 4.2 8.8 - - - +
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Residues in contact with THR 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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10A ASN* 5.2 1.4 + - - -
12A LEU* 6.0 2.3 - - - +
93A GLU* 2.8 53.4 + - + +
95A GLU* 1.3 83.2 - - + +
97A ASP* 1.3 66.3 + - - +
98A ALA 3.1 1.8 - - - -
99A GLN* 2.7 33.8 - - - +
100A MET* 4.2 4.7 + - - +
165A ARG* 4.9 10.8 - - - +
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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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12A LEU* 4.8 11.1 - - - +
92A TRP* 3.7 22.1 + - - +
93A GLU 3.5 3.6 + - - +
94A TRP* 3.1 13.3 + - - +
96A THR* 1.3 82.1 + - - +
98A ALA* 1.3 61.7 + - - +
99A GLN 3.0 7.3 + - - -
100A MET* 3.2 19.1 + - - +
103A PRO* 2.9 34.8 - - + +
106A SER* 2.6 40.4 + - - -
108A ILE* 4.1 0.5 - - - +
109A TRP* 4.9 0.9 + - - -
162A LEU* 4.9 5.6 - - + +
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Residues in contact with ALA 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 TRP 3.0 12.5 + - - +
95A GLU 3.8 8.3 - - - +
96A THR 3.1 1.0 - - - -
97A ASP* 1.3 78.4 - - - +
99A GLN* 1.3 62.1 + - - +
100A MET 3.9 3.3 - - - +
103A PRO* 4.4 10.6 - - - +
161A THR* 5.3 5.5 + - - +
162A LEU* 4.0 14.4 - - + +
163A PRO 3.0 28.3 - - - +
164A THR* 4.7 7.6 - - + -
165A ARG 5.0 0.2 - - - +
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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