Contacts of the helix formed by residues 180 - 187 (chain D) in PDB entry 1D2V
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 180 (chain D).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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10B ILE* 3.5 5.4 - - - -
11B THR* 4.2 5.8 - - + -
25B SER* 4.5 1.1 - - - +
26B ASN* 3.2 31.3 + - - +
166D ALA* 4.4 8.5 - - - +
178D GLY 3.5 0.4 - - - -
179D SER* 1.3 88.3 - - - +
181D GLU* 1.3 60.5 + - - +
182D PRO* 3.4 13.0 - - + +
183D LEU* 3.3 14.2 + - + +
184D ALA* 2.9 27.7 + - - +
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Residues in contact with GLU 181 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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10B ILE* 3.8 20.6 - - + +
11B THR* 4.1 20.8 + - + +
180D GLU* 1.3 71.4 - - - +
182D PRO* 1.4 69.6 - - + +
184D ALA* 3.4 3.3 + - - +
185D ARG* 3.0 40.0 + - - +
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Residues in contact with PRO 182 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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180D GLU* 3.4 15.5 - - + +
181D GLU* 1.4 93.0 - - + +
183D LEU* 1.4 51.9 + - - +
185D ARG* 3.1 25.5 + - - +
186D ASN* 2.8 45.9 + - - +
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Residues in contact with LEU 183 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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178D GLY* 3.7 12.1 - - - -
179D SER 4.5 3.4 - - - +
180D GLU* 3.3 16.2 + - + +
182D PRO* 1.4 78.2 - - - +
184D ALA* 1.3 65.7 + - - +
186D ASN* 3.0 10.6 + - + +
187D LEU* 2.9 45.5 + - + +
234D LEU* 4.1 15.3 - - + -
235D ALA 3.6 17.7 - - - +
236D GLY 3.2 27.1 - - - +
237D ASP 6.0 0.2 - - - -
238D THR* 6.1 4.5 - - + -
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Residues in contact with ALA 184 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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10B ILE* 3.6 31.4 - - + -
177D TYR 3.2 25.9 + - - +
180D GLU 2.9 16.3 + - - +
181D GLU* 3.4 5.4 + - - +
183D LEU* 1.3 76.9 - - - +
185D ARG* 1.3 61.1 + - - +
187D LEU* 3.5 7.0 + - - +
188D ARG* 3.2 25.8 + - - +
277D TYR* 4.5 4.5 + - - +
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Residues in contact with ARG 185 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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181D GLU* 3.0 26.2 + - - +
182D PRO* 3.1 38.9 + - - +
184D ALA* 1.3 74.2 - - - +
186D ASN* 1.3 74.2 + - - +
187D LEU 3.0 1.8 - - - -
188D ARG* 2.9 29.3 + - - +
190D MET* 4.3 19.3 - - + +
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Residues in contact with ASN 186 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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182D PRO* 2.8 33.5 + - - +
183D LEU* 3.0 10.6 + - + +
185D ARG* 1.3 80.3 + - - +
187D LEU* 1.4 60.0 + - - +
188D ARG 3.3 6.6 + - - +
198D ALA* 4.7 5.2 - - - +
234D LEU* 5.2 13.1 - - + +
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Residues in contact with LEU 187 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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176D VAL 3.8 4.5 - - - +
177D TYR 3.4 26.0 - - - +
183D LEU* 2.9 36.2 + - + +
184D ALA* 3.8 4.9 - - - +
185D ARG 3.0 0.4 + - - -
186D ASN* 1.4 74.2 - - - +
188D ARG* 1.3 60.8 + - - +
197D LEU* 3.4 19.7 - - + +
198D ALA* 2.9 23.7 + - - +
212D PRO* 5.1 6.5 - - + -
234D LEU* 3.9 24.7 - - + +
235D ALA* 3.7 27.1 - - - +
236D GLY* 3.7 18.2 - - - +
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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