Contacts of the helix formed by residues 231 - 243 (chain A) in PDB entry 1NPM
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 ILE 231 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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53A LEU* 3.8 28.5 - - + -
103A ILE* 4.2 13.0 - - + -
123A LEU* 4.3 9.2 - - + -
124A ALA* 4.1 8.3 - - + +
209A LEU* 3.6 30.5 - - + +
210A GLN 3.0 25.2 + - - +
211A GLY* 3.8 8.3 - - - +
212A ILE* 3.9 15.7 - - + -
229A THR 3.2 2.4 + - - +
230A LYS* 1.3 71.0 - - - +
232A CYS* 1.3 59.3 + - - +
234A TYR* 2.8 21.6 + - - +
235A THR* 3.1 28.4 + - + -
238A ILE* 4.2 4.5 - - + -
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Residues in contact with CYS 232 (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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124A ALA 3.7 14.7 + - - +
125A ASN 3.8 15.5 - - - +
127A LEU 4.1 1.1 - - - +
128A CYS* 2.0 61.0 - - - +
210A GLN* 4.7 3.9 + - - +
230A LYS* 3.3 28.9 - - - +
231A ILE* 1.3 77.0 - - - +
233A ARG* 1.3 60.7 + - - +
235A THR* 3.3 13.1 + - - -
173B PRO* 4.2 3.7 - - - +
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Residues in contact with ARG 233 (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 HIS* 5.2 5.4 + - - -
101A HIS* 4.7 12.9 - - - -
178A GLU* 4.2 17.4 + - + +
179A GLY* 4.0 17.7 - - - +
230A LYS* 3.4 13.4 + - + +
231A ILE 3.0 0.8 + - - -
232A CYS* 1.3 80.3 - - - +
234A TYR* 1.3 97.9 + - + +
235A THR 3.7 0.2 - - - -
236A THR* 5.0 4.0 + - - -
237A TRP* 6.2 1.4 - - - +
170B ARG* 3.3 44.2 + - + +
173B PRO* 3.6 32.5 - - + -
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Residues in contact with TYR 234 (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 HIS* 3.8 30.5 - + - -
101A HIS* 2.8 51.7 + - - -
103A ILE* 4.0 24.0 - - + -
177A THR* 5.5 1.0 + - - -
179A GLY* 3.9 16.5 + - - -
229A THR* 3.6 27.1 - - + +
230A LYS 3.2 22.9 - - - -
231A ILE 2.8 8.0 + - - +
233A ARG* 1.3 105.9 + - + +
235A THR* 1.3 61.8 + - - -
236A THR 3.1 3.7 + - - -
237A TRP* 3.1 10.1 + - + +
238A ILE* 3.0 26.1 + - + +
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Residues in contact with THR 235 (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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123A LEU* 4.0 21.1 - - + -
124A ALA 3.6 24.0 + - - +
125A ASN* 4.5 15.9 + - - +
231A ILE* 3.1 23.6 + - + +
232A CYS* 3.3 16.3 + - - -
233A ARG 3.7 0.8 - - - -
234A TYR* 1.3 75.8 - - - +
236A THR* 1.3 62.2 + - - +
238A ILE* 3.7 5.7 - - - +
239A LYS* 3.1 37.2 + - - +
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Residues in contact with THR 236 (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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233A ARG 5.0 3.8 + - - -
234A TYR 3.1 1.2 - - - -
235A THR* 1.3 77.7 + - - +
237A TRP* 1.3 67.7 + - - +
239A LYS* 4.1 3.2 - - - +
240A LYS* 3.1 44.4 + - - +
170B ARG* 4.9 24.0 + - - +
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Residues in contact with TRP 237 (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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89A ILE* 3.7 31.6 - - + +
90A GLN 3.9 3.1 - - - -
91A HIS* 3.7 45.5 - + + +
92A PRO* 3.4 22.4 - - + +
103A ILE* 4.0 25.8 - - + -
104A MET* 4.1 4.9 - - - -
105A LEU* 3.9 25.6 - - + -
233A ARG* 6.2 1.1 - - - +
234A TYR* 3.1 13.7 + - + +
236A THR* 1.3 82.7 - - + +
238A ILE* 1.3 94.3 + - + +
240A LYS* 3.4 7.6 + - + +
241A THR* 2.9 40.5 + - - -
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Residues in contact with ILE 238 (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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47A VAL* 5.3 1.1 - - + -
53A LEU* 4.0 25.1 - - + -
103A ILE* 4.1 12.8 - - + -
105A LEU* 3.6 19.0 - - + +
123A LEU* 3.6 27.1 - - + -
231A ILE* 4.2 12.3 - - + -
234A TYR* 3.0 27.9 + - + +
235A THR* 3.7 10.8 - - - +
237A TRP* 1.3 99.4 - - + +
239A LYS* 1.3 62.7 + - - +
241A THR 3.4 0.5 + - - -
242A MET* 3.3 35.7 + - + +
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Residues in contact with LYS 239 (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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123A LEU* 4.8 15.4 - - + +
125A ASN* 4.8 13.7 - - - -
235A THR* 3.1 27.8 + - - +
236A THR* 4.1 2.9 - - - +
238A ILE* 1.3 74.4 - - + +
240A LYS* 1.3 66.9 + - - +
242A MET* 3.0 19.1 + - + +
243A ASP* 2.9 38.8 + - - +
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Residues in contact with LYS 240 (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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236A THR* 3.1 36.7 + - - +
237A TRP* 3.4 7.2 + - + +
239A LYS* 1.3 76.6 - - - +
241A THR* 1.3 61.7 + - - +
243A ASP* 3.7 16.4 + - - +
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Residues in contact with THR 241 (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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51A TRP* 3.9 13.0 - - + -
89A ILE* 3.8 36.8 - - + -
105A LEU* 3.6 25.6 - - + -
237A TRP* 2.9 33.6 + - - -
238A ILE 3.7 0.2 - - - -
240A LYS* 1.3 76.3 - - - +
242A MET* 1.3 64.5 + - - +
243A ASP* 3.8 4.2 - - - +
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Residues in contact with MET 242 (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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47A VAL* 4.0 28.5 - - + +
48A GLY* 5.5 0.2 - - - -
51A TRP* 3.7 55.8 + - + +
105A LEU* 4.2 7.2 - - + -
123A LEU* 4.9 6.7 - - + -
238A ILE* 3.3 34.0 + - + +
239A LYS* 3.0 23.1 + - + +
241A THR* 1.3 78.2 - - - +
243A ASP* 1.3 67.0 + - - +
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Residues in contact with ASP 243 (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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239A LYS* 2.9 27.6 + - - +
240A LYS* 3.7 15.8 - - - +
241A THR 3.5 4.4 - - - +
242A MET* 1.3 87.6 - - - +
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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