Contacts of the helix formed by residues 247 - 253 (chain C) in PDB entry 1Z6T
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 247 (chain C).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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189C LYS* 2.6 34.2 + - - +
190C GLN 4.5 5.0 + - - +
245C VAL* 3.6 9.1 - - - +
246C TRP* 1.3 90.3 - - - +
248C SER* 1.3 65.7 + - - +
249C TRP* 3.2 35.6 + - + +
250C VAL* 3.0 24.6 + - + +
251C LEU 3.6 1.0 + - - -
269C VAL* 3.9 6.2 - - - +
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Residues in contact with SER 248 (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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247C ASP* 1.3 70.0 - - - +
249C TRP* 1.3 67.3 + - - +
251C LEU* 3.2 12.4 + - - +
252C LYS* 3.2 7.6 + - - -
268C SER 4.4 3.4 - - - -
269C VAL* 3.1 35.6 + - - +
271C ASP* 5.3 1.8 - - - -
272C SER* 3.0 36.3 + - - -
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Residues in contact with TRP 249 (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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189C LYS* 5.7 0.2 - - - +
190C GLN 3.3 21.5 - - - -
191C ASP* 3.6 30.7 - - - -
192C LYS* 3.7 40.2 - - + +
195C LEU* 3.8 23.1 - - + -
220C ILE* 4.4 6.5 - - + -
247C ASP* 3.2 32.0 + - + +
248C SER* 1.3 83.2 + - - +
250C VAL* 1.3 76.3 + - + +
252C LYS* 3.4 39.7 + - - +
253C ALA* 3.6 5.1 + - + +
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Residues in contact with VAL 250 (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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187C VAL* 4.0 25.6 - - + -
188C GLY 5.6 1.1 - - - +
190C GLN* 4.8 11.9 - - + +
195C LEU* 4.0 15.9 - - + -
245C VAL* 4.1 15.0 - - + -
246C TRP* 5.5 1.8 - - + +
247C ASP* 3.0 21.7 + - + +
249C TRP* 1.3 113.8 - - + +
251C LEU* 1.3 61.6 + - - +
253C ALA* 3.1 15.1 + - - +
254C PHE* 3.3 22.5 - - + -
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Residues in contact with LEU 251 (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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149C TRP* 3.7 28.5 - - + -
242C LEU* 3.9 27.6 - - + -
245C VAL* 3.9 20.0 - - + -
247C ASP 3.6 2.5 + - - +
248C SER 3.2 11.4 + - - +
250C VAL* 1.3 78.9 - - - +
252C LYS* 1.3 62.8 + - - +
254C PHE* 3.0 17.0 + - + +
255C ASP* 3.3 8.7 + - - +
262C LEU* 4.1 11.4 - - + -
269C VAL* 3.2 41.1 - - + +
270C THR* 3.8 17.3 - - - +
273C VAL* 4.2 10.3 - - + -
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Residues in contact with LYS 252 (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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172B SER* 5.6 8.1 - - - +
175B GLU* 4.8 11.2 + - - +
224C LYS* 2.7 34.0 + - - +
248C SER* 3.2 2.1 + - - +
249C TRP* 3.4 30.6 - - - +
250C VAL 3.2 0.2 - - - -
251C LEU* 1.3 79.3 - - - +
253C ALA* 1.3 58.0 + - - +
255C ASP* 3.2 15.7 + - + +
272C SER* 3.4 43.0 - - - +
273C VAL* 4.4 2.2 - - + +
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Residues in contact with ALA 253 (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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195C LEU* 3.9 20.9 - - + -
199C LEU* 4.1 13.0 - - + +
220C ILE* 4.1 21.5 - - + -
224C LYS* 3.5 34.1 - - + +
227C LEU* 4.6 4.2 - - - +
249C TRP* 3.6 4.1 + - + +
250C VAL 3.1 14.1 + - - +
252C LYS* 1.3 79.0 - - - +
254C PHE* 1.3 60.1 + - + +
255C ASP 3.5 0.2 - - - -
256C SER* 4.4 1.0 + - - -
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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