Contacts of the strand formed by residues 257 - 262 (chain Q) in PDB entry 2AK4
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 TYR 257 (chain Q).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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201Q LEU* 3.8 4.7 - - + -
217Q TRP* 3.8 18.0 - + + -
218Q GLN 3.2 8.7 - - - -
219Q ARG* 3.3 46.3 + - + -
224Q GLN* 4.5 13.7 + - + -
247Q VAL* 4.3 14.1 - - + -
248Q VAL 4.6 3.1 + - - -
249Q VAL* 3.5 38.5 - - + +
250Q PRO* 3.8 19.9 - - + +
253Q GLU* 3.4 24.1 + - + -
254Q GLU* 3.2 14.3 + - - +
255Q GLN 3.2 2.2 - - - +
256Q ARG* 1.3 83.5 - - + +
258Q THR* 1.3 61.3 + - - +
273Q ARG* 3.4 24.3 - - - +
274Q TRP 4.4 0.3 + - - -
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Residues in contact with THR 258 (chain Q).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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217Q TRP* 3.3 7.4 - - - -
218Q GLN* 2.7 51.2 + - - +
220Q ASP 5.4 0.4 + - - +
221Q GLY 5.1 3.8 + - - -
255Q GLN 5.1 1.6 - - - +
256Q ARG 4.7 4.7 + - - +
257Q TYR* 1.3 74.7 - - - +
259Q CYS* 1.3 59.9 + - - +
260Q HIS* 3.0 27.2 + - + -
271Q THR* 4.2 4.0 - - + -
272Q LEU 3.1 7.0 - - - -
273Q ARG* 3.2 44.6 - - + +
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Residues in contact with CYS 259 (chain Q).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
189Q VAL* 4.7 0.4 - - + -
203Q CYS* 2.0 52.3 - - + -
215Q LEU* 4.9 3.6 - - - -
216Q THR 3.6 11.4 - - - -
217Q TRP* 3.7 18.3 - - + -
245Q ALA* 5.5 0.2 - - - -
258Q THR 1.3 67.6 - - - -
260Q HIS* 1.3 66.0 + - - +
261Q VAL* 4.2 10.7 + - - -
270Q LEU 4.3 0.2 - - - -
271Q THR* 3.2 4.9 - - - -
272Q LEU* 2.3 62.5 + - + +
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Residues in contact with HIS 260 (chain Q).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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214Q THR 3.5 1.7 - - - +
215Q LEU* 3.4 5.7 - - - -
216Q THR* 2.8 49.5 + - - +
218Q GLN* 3.3 31.7 + - - +
258Q THR* 3.0 38.4 + - - -
259Q CYS* 1.3 73.7 - - - +
261Q VAL* 1.3 63.3 + - - +
262Q GLN* 5.5 6.5 - - + +
270Q LEU 3.3 6.1 - - - +
271Q THR* 3.1 35.3 + - + +
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Residues in contact with VAL 261 (chain Q).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
185Q PRO* 4.0 17.7 - - + -
187Q THR* 4.2 11.0 - - + -
203Q CYS* 4.5 2.2 - - - -
205Q ALA* 5.7 0.2 - - + -
213Q ILE* 4.4 4.7 - - + -
214Q THR 3.4 5.6 - - - +
215Q LEU* 4.3 18.8 - - + -
259Q CYS* 4.2 13.0 - - - -
260Q HIS* 1.3 77.7 - - - +
262Q GLN* 1.3 65.5 + - - +
266Q LEU* 3.7 19.7 - - + +
269Q PRO* 3.7 4.9 - - - +
270Q LEU* 3.0 42.4 + - + -
272Q LEU* 3.9 24.0 - - + -
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Residues in contact with GLN 262 (chain Q).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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213Q ILE* 3.3 5.5 - - - +
214Q THR* 2.9 57.6 + - - +
216Q THR* 5.4 5.1 + - - +
260Q HIS* 5.5 5.4 - - + +
261Q VAL* 1.3 79.5 - - - +
263Q HIS* 1.3 63.8 + - - +
266Q LEU* 4.7 0.2 - - - -
269Q PRO* 4.4 19.8 - - + +
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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