Contacts of the helix formed by residues 262 - 271 (chain N) in PDB entry 2AAZ
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 HIS 262 (chain N).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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219N ASP* 3.6 29.2 + - - -
221N GLY* 4.1 3.8 - - - -
222N LEU* 3.8 20.9 - - + -
258N VAL* 4.1 2.7 - - + -
259N TYR* 2.8 27.3 + + + +
261N ASP* 1.3 95.1 + - - +
263N VAL* 1.3 64.9 + - - +
265N PRO* 3.2 10.0 - - - +
266N LEU* 2.9 37.6 + - + +
313N MET* 3.7 31.8 - - + +
314N LYS 2.7 29.0 + - - -
315N MET* 5.2 0.7 - - - -
316N SER 5.9 0.4 - - - -
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Residues in contact with VAL 263 (chain N).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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31N ILE* 4.2 23.5 - - + +
46N VAL* 5.0 8.3 - - + -
258N VAL* 4.2 14.3 - - + +
259N TYR 3.8 8.1 - - - +
260N ARG* 3.5 23.3 + - - +
262N HIS* 1.3 78.6 - - - +
264N GLU* 1.3 70.3 + - + +
266N LEU* 3.3 4.0 + - - +
267N LYS* 3.1 50.5 + - - +
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Residues in contact with GLU 264 (chain N).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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260N ARG 5.0 0.6 + - - -
263N VAL* 1.3 83.0 - - + +
265N PRO* 1.3 74.5 - - + +
267N LYS* 3.0 53.7 + - - +
268N THR* 3.5 9.0 + - - -
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Residues in contact with PRO 265 (chain N).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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261N ASP 3.7 16.8 - - - +
262N HIS* 3.2 15.9 - - - +
264N GLU* 1.3 95.9 - - + +
266N LEU* 1.3 59.4 + - - +
268N THR* 3.3 22.1 + - - +
269N GLN 3.5 3.5 + - - -
311N ILE* 3.6 19.8 - - + +
312N ASP 3.8 23.6 - - - +
313N MET* 3.9 13.0 - - + -
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Residues in contact with LEU 266 (chain N).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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23N TYR* 4.4 0.9 - - - +
27N ILE* 3.9 41.7 - - + -
31N ILE* 4.8 2.2 - - + -
221N GLY* 4.1 13.2 - - - +
258N VAL* 3.5 34.8 - - + -
262N HIS* 2.9 25.6 + - + +
263N VAL* 3.7 4.7 - - - +
265N PRO* 1.3 71.8 - - - +
267N LYS* 1.3 60.3 + - - +
268N THR 3.1 2.2 - - - -
269N GLN* 2.9 29.5 + - + +
270N LEU* 2.9 33.2 + - - +
313N MET* 3.8 22.4 - - + -
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Residues in contact with LYS 267 (chain N).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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31N ILE* 4.6 18.2 - - + -
263N VAL* 3.1 33.5 + - + +
264N GLU* 3.0 42.6 + - - +
266N LEU* 1.3 76.0 - - - +
268N THR* 1.3 60.6 + - - +
270N LEU* 3.4 21.7 + - + +
271N GLU* 3.4 20.9 + - - +
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Residues in contact with THR 268 (chain N).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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264N GLU 3.5 8.4 + - - -
265N PRO* 3.3 12.6 + - - +
266N LEU 3.1 0.4 - - - -
267N LYS* 1.3 80.2 - - - +
269N GLN* 1.3 61.5 + - - +
271N GLU* 3.3 29.8 + - - +
272N ARG* 3.9 28.9 - - - +
311N ILE* 5.0 5.8 - - + -
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Residues in contact with GLN 269 (chain N).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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23N TYR* 3.9 21.6 + - - -
24N LEU* 4.3 6.2 - - + +
27N ILE* 5.8 0.2 - - - -
66N LEU* 4.9 2.4 - - - +
68N THR* 2.8 42.5 + - - +
69N LYS* 3.7 25.1 - - - +
265N PRO 3.5 1.4 + - - -
266N LEU* 2.9 34.1 + - + +
268N THR* 1.3 76.6 - - - +
270N LEU* 1.3 61.2 + - + +
271N GLU 3.0 4.7 - - - -
272N ARG* 3.0 25.9 + - - +
311N ILE* 3.2 27.1 - - + +
313N MET* 4.3 2.8 - - - +
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Residues in contact with LEU 270 (chain N).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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24N LEU* 3.4 49.8 - - + +
27N ILE* 4.2 13.2 - - + -
28N ARG* 3.5 44.7 + - + +
31N ILE* 4.3 20.9 - - + -
266N LEU 2.9 19.3 + - - +
267N LYS* 3.6 19.5 - - + +
268N THR 3.3 0.2 - - - -
269N GLN* 1.3 76.4 - - + +
271N GLU* 1.3 59.5 + - + +
272N ARG 3.2 5.1 + - - +
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Residues in contact with GLU 271 (chain N).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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267N LYS* 3.4 19.9 - - - +
268N THR* 3.5 20.5 + - - +
269N GLN 3.0 0.6 - - - -
270N LEU* 1.3 78.2 - - + +
272N ARG* 1.3 61.3 + - + +
273N GLU 3.9 1.2 + - - -
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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