Contacts of the helix formed by residues 114 - 120 (chain A) in PDB entry 1PR1
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 LYS 114 (chain A).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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112A ASP 4.2 1.3 + - - +
113A SER* 1.3 73.8 + - - +
115A VAL* 1.3 65.1 - - - +
116A ASN 3.3 2.9 - - - -
117A ARG* 3.0 25.0 + - + +
118A ILE* 2.9 38.7 + - + +
122A ASP* 5.7 2.9 - - - +
157A ASP* 5.0 0.4 + - - -
122B ASP* 3.7 17.2 + - - +
123B HIS* 3.0 36.2 + - - +
124B ASP* 5.3 3.2 + - - +
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Residues in contact with VAL 115 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
66A ILE* 4.0 28.9 - - + -
67A PRO* 6.1 3.4 - - + -
70A SER* 5.2 2.7 - - - +
111A THR* 6.2 1.3 - - + -
113A SER* 3.2 17.0 + - - +
114A LYS* 1.3 77.8 - - - +
116A ASN* 1.3 71.7 + - - +
118A ILE* 3.5 12.4 + - + +
119A ARG* 3.1 49.5 + - - +
183A ALA* 5.5 0.4 - - + -
184A GLY* 4.8 5.4 - - - -
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Residues in contact with ASN 116 (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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111A THR* 4.9 9.6 - - + +
113A SER 4.9 2.0 + - - +
114A LYS 3.3 0.6 - - - -
115A VAL* 1.3 81.4 - - - +
117A ARG* 1.3 56.1 + - + +
118A ILE 3.2 1.8 - - - -
119A ARG* 2.7 43.8 + - + +
120A PHE* 2.6 38.8 + - - +
123A HIS 5.2 0.4 - - - -
125A PHE* 4.0 29.0 - - + +
127A ALA* 4.0 15.2 - - - +
183A ALA* 3.5 21.4 + - - +
187A GLY* 3.6 13.5 - - - -
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Residues in contact with ARG 117 (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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111A THR 5.8 1.8 + - - -
113A SER 4.7 7.0 + - - +
114A LYS* 3.0 31.3 + - + +
116A ASN* 1.3 77.7 - - + +
118A ILE* 1.3 63.2 + - + +
120A PHE 4.2 0.4 - - - +
121A LYS* 3.2 5.5 + - - -
122A ASP* 2.7 59.1 + - - +
123A HIS 4.1 18.2 + - - +
124A ASP* 5.0 11.7 + - - -
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Residues in contact with ILE 118 (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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114A LYS* 2.9 37.5 + - + +
115A VAL* 3.6 14.1 - - + +
116A ASN 3.2 0.2 - - - -
117A ARG* 1.3 76.0 - - + +
119A ARG* 1.3 61.6 + - + +
121A LYS* 4.4 8.7 + - - +
123B HIS* 4.0 31.0 - - + +
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Residues in contact with ARG 119 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
70A SER* 4.7 8.1 + - - -
115A VAL* 3.1 37.2 + - - +
116A ASN* 2.7 46.4 + - + +
118A ILE* 1.3 83.1 - - + +
120A PHE* 1.3 60.9 + - + +
121A LYS* 3.4 15.2 + - - +
125A PHE* 6.3 2.2 - - + -
184A GLY 4.4 3.0 + - - -
187A GLY* 3.9 20.9 + - - -
188A VAL* 3.5 24.9 - - - +
191A GLU* 2.8 34.0 + - - +
192A PHE* 5.5 0.4 - - - -
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Residues in contact with PHE 120 (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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116A ASN 2.6 19.0 + - - +
117A ARG 3.2 0.4 + - - -
119A ARG* 1.3 77.9 - - + +
121A LYS* 1.3 70.7 + - - +
122A ASP 3.2 2.2 - - - -
123A HIS* 3.0 36.1 + + + +
124A ASP 3.6 27.8 - - - -
125A PHE* 3.7 40.4 - + + -
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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