Contacts of the helix formed by residues 164 - 169 (chain A) in PDB entry 2FJX
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 164 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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48A LEU 4.0 7.0 - - - -
49A ILE* 3.4 12.3 - - - +
50A ILE* 2.8 49.6 + - - +
160A LEU* 4.4 4.7 - - - -
161A HIS* 2.9 8.8 + - - +
163A THR* 1.3 77.7 - - - +
165A GLN* 1.3 65.2 + - - +
166A PRO* 3.4 3.6 - - - -
167A LEU* 3.3 23.9 + - - +
168A PHE* 3.7 8.5 - - - -
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Residues in contact with GLN 165 (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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88A VAL* 4.3 8.3 - - - +
160A LEU* 3.0 33.6 + - + +
161A HIS 3.2 8.0 + - - +
162A PRO* 3.4 25.6 + - - +
164A SER* 1.3 77.6 - - - +
166A PRO* 1.3 65.8 - - + +
167A LEU 3.1 1.2 + - - -
168A PHE* 3.2 7.3 + - - +
184A THR* 2.6 33.5 + - + +
185A TRP 3.2 22.4 - - - +
186A THR* 3.8 27.5 + - - +
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Residues in contact with PRO 166 (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 CYS* 5.4 3.8 - - + -
91A GLN 5.5 2.0 - - - +
92A SER* 2.7 37.9 + - - +
93A PRO* 4.9 4.3 - - + -
94A TRP* 3.4 11.2 - - + +
162A PRO 3.2 16.8 - - - +
163A THR* 3.6 9.6 - - - +
164A SER 3.4 4.3 - - - -
165A GLN* 1.3 92.5 - - + +
167A LEU* 1.3 61.3 + - - +
168A PHE 3.2 1.1 + - - -
169A ALA 3.4 7.7 + - - -
184A THR* 4.5 6.5 - - + +
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Residues in contact with LEU 167 (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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50A ILE* 3.9 16.6 - - + +
52A LEU* 4.0 14.8 - - + -
94A TRP* 3.6 63.2 - - + +
95A ASN 6.1 0.2 - - - -
96A THR* 5.2 0.5 + - - -
118A VAL* 3.5 35.9 - - + +
122A VAL* 3.9 20.9 - - + -
164A SER* 3.3 15.4 + - - +
165A GLN 3.1 0.8 + - - -
166A PRO* 1.3 80.0 - - - +
168A PHE* 1.3 81.0 + - + +
169A ALA 5.0 0.7 - - - +
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Residues in contact with PHE 168 (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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50A ILE* 4.4 3.6 - - + -
96A THR* 4.9 0.2 - - - -
113A GLN* 2.9 21.2 + - - +
115A LEU* 3.9 21.3 - - + -
118A VAL* 4.0 12.8 - - + -
160A LEU* 3.6 38.4 - - + -
164A SER 3.7 14.8 - - - -
165A GLN 3.2 3.1 + - - -
166A PRO 3.2 1.2 - - - -
167A LEU* 1.3 96.1 - - + +
169A ALA* 1.3 60.1 + - - +
170A PHE* 3.8 1.0 + - - -
184A THR* 3.3 8.0 + - - +
185A TRP* 3.5 29.2 + - + -
189A PRO* 3.6 17.5 - - + -
192A PHE* 3.7 48.2 - + + -
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Residues in contact with ALA 169 (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 CYS* 3.7 21.5 - - - -
92A SER* 3.8 4.3 - - - -
94A TRP 3.5 19.4 + - - +
95A ASN* 3.4 5.1 - - - -
96A THR* 3.1 24.6 + - - -
166A PRO 3.4 11.7 + - - +
167A LEU 3.5 1.9 + - - +
168A PHE* 1.3 81.0 - - - +
170A PHE* 1.3 60.4 + - - +
182A GLN* 3.9 6.3 - - - +
183A LEU 3.2 13.5 - - - +
184A THR* 3.2 4.5 + - - +
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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