Contacts of the strand formed by residues 123 - 127 (chain F) in PDB entry 4PJE
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 123 (chain F).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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121F PRO 3.9 1.5 + - - +
122F PRO* 1.3 74.5 - - - +
124F VAL* 1.3 60.3 + - - +
125F ALA 4.3 0.2 - - - -
145F LEU 3.5 1.4 - - - +
146F ALA* 3.2 5.4 - - - -
147F THR* 2.8 45.9 + - - +
234F VAL* 4.8 1.6 - - - -
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Residues in contact with VAL 124 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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122F PRO* 4.1 6.5 + - + -
123F GLU* 1.3 79.4 - - - +
125F ALA* 1.3 64.3 + - - +
144F CYS* 3.6 27.8 - - - -
145F LEU 3.4 2.7 - - - +
146F ALA* 4.4 1.8 - - + -
209F CYS* 4.1 8.1 - - - +
211F VAL* 3.7 19.7 - - + -
234F VAL* 3.6 41.7 - - + +
235F SER 4.2 5.6 - - - +
236F ALA* 3.5 29.4 - - + +
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Residues in contact with ALA 125 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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124F VAL* 1.3 75.6 - - - +
126F VAL* 1.3 65.8 + - - +
127F PHE* 3.7 27.1 - - + -
144F CYS* 3.4 4.9 - - - -
145F LEU* 2.9 34.4 + - + +
236F ALA* 3.8 2.9 - - - -
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Residues in contact with VAL 126 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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122E ARG 4.6 2.1 - - - +
125F ALA* 1.3 74.4 - - - +
127F PHE* 1.3 71.7 + - - +
128F GLU* 4.1 3.8 + - + +
142F LEU* 4.1 25.8 - - + -
143F VAL 3.4 5.4 - - - +
144F CYS* 4.4 4.3 - - + -
158F TRP* 4.5 6.1 - - + -
207F PHE* 5.8 0.9 - - + +
208F ARG* 5.3 0.4 - - - -
209F CYS* 3.9 22.9 - - + +
236F ALA* 3.6 39.0 - - + +
237F GLU* 4.4 6.5 - - - +
238F ALA* 4.1 16.4 - - + -
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Residues in contact with PHE 127 (chain F).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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121E LEU* 3.8 24.3 - - + +
122E ARG 3.6 25.6 - - - +
131E VAL* 3.6 34.5 - - + -
125F ALA* 3.7 35.4 - - + -
126F VAL* 1.3 76.1 - - - +
128F GLU* 1.3 63.7 + - - +
142F LEU* 3.5 6.2 - - - +
143F VAL* 2.8 46.1 + - + +
145F LEU* 3.8 22.4 - - + -
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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