Contacts of the helix formed by residues 219 - 225 (chain C) in PDB entry 1D7W
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 ASP 219 (chain C).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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214C ASP 4.9 1.2 - - - +
216C LEU* 3.7 27.3 + - + +
217C HIS 3.5 5.0 + - - +
218C ASP* 1.3 71.0 - - - +
220C PRO* 1.3 68.0 - - - +
221C CYS* 2.9 31.0 + - - +
222C LEU* 3.0 42.2 + - + +
223C LEU* 3.8 8.7 - - - +
231C PRO* 3.6 14.3 - - + +
232C CYS* 2.8 33.6 + - - +
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Residues in contact with PRO 220 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
216C LEU* 4.0 11.2 - - + -
218C ASP 3.1 9.6 - - - +
219C ASP* 1.3 80.7 - - - +
221C CYS* 1.3 66.8 + - - +
223C LEU* 3.2 19.5 + - + +
224C THR 3.7 1.4 + - - -
232C CYS* 3.7 16.4 - - - -
366C PHE* 4.0 24.7 - - + -
410C VAL* 3.2 38.2 - - + +
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Residues in contact with CYS 221 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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219C ASP* 2.9 6.6 + - - +
220C PRO* 1.3 74.6 - - - +
222C LEU* 1.3 63.1 + - - +
224C THR* 2.7 23.4 + - - -
225C ASN 4.1 1.2 + - - +
230C ILE 3.9 5.5 - - - +
231C PRO 3.8 0.9 - - - -
232C CYS* 2.0 53.4 - - - +
241C SER* 3.6 17.0 - - - -
366C PHE* 3.2 31.2 - - - +
368C SER* 3.3 17.0 + - - +
369C TRP* 5.0 1.7 - - - -
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Residues in contact with LEU 222 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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219C ASP* 3.0 36.9 + - + +
220C PRO 3.3 0.2 - - - -
221C CYS* 1.3 75.0 - - - +
223C LEU* 1.3 66.7 + - + +
225C ASN 3.3 24.3 - - - +
226C ARG* 3.6 8.3 + - - +
229C ARG* 3.8 22.2 + - + +
230C ILE 3.8 25.4 - - - +
231C PRO* 3.8 9.2 - - + -
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Residues in contact with LEU 223 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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218C ASP* 5.2 5.6 - - + +
219C ASP 3.8 11.9 - - - +
220C PRO* 3.4 20.6 - - + +
221C CYS 3.1 0.6 - - - -
222C LEU* 1.3 80.8 - - + +
224C THR* 1.3 61.6 + - - +
225C ASN* 3.3 1.1 + - - -
226C ARG* 3.7 50.0 + - + +
409C GLN* 4.2 14.8 - - - +
410C VAL* 4.2 23.6 - - + +
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Residues in contact with THR 224 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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220C PRO 3.9 2.5 - - - +
221C CYS 2.7 17.0 + - - -
223C LEU* 1.3 77.1 - - - +
225C ASN* 1.3 60.3 + - - +
365C PHE 3.0 28.9 - - - +
366C PHE 3.3 17.5 + - - +
367C ALA* 4.1 6.5 - - - -
369C TRP* 3.4 20.5 + - - -
409C GLN* 3.3 38.7 + - + +
410C VAL* 3.8 18.8 - - + -
1630C NAG 6.1 0.7 - - - +
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Residues in contact with ASN 225 (chain C).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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221C CYS 4.1 1.3 + - - +
222C LEU* 3.3 8.7 + - - +
224C THR* 1.3 80.5 + - - +
226C ARG* 1.3 64.6 + - - +
227C SER* 2.9 18.2 + - - -
228C ALA* 3.0 14.3 + - + +
229C ARG 3.6 6.6 + - - -
230C ILE 5.1 0.7 + - - -
369C TRP* 3.4 35.5 - - + +
1630C NAG 1.5 64.0 + - - +
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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