Contacts of the helix formed by residues 364 - 369 (chain K) in PDB entry 2I2X
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 364 (chain K).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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233K LEU* 3.3 8.5 - - - +
240K HIS* 2.6 26.8 + - - +
298K VAL* 3.3 29.4 - - + -
361K ARG 4.1 0.3 - - - +
362K TYR 3.3 2.6 + - - -
363K ARG* 1.3 80.3 - - + +
365K PRO* 1.4 71.2 - - - +
366K GLN* 2.9 37.6 + - - +
367K ALA* 2.8 23.1 + - - +
368K TYR* 2.9 11.8 + - - +
412K LEU* 4.3 5.4 - - - -
15L ARG* 3.1 16.4 + - - +
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Residues in contact with PRO 365 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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240K HIS* 3.9 26.7 - - + +
241K THR* 4.1 7.4 - - + +
244K VAL* 3.4 12.8 - - + +
364K ASP* 1.4 94.6 - - - +
366K GLN* 1.3 61.0 + - - +
367K ALA 3.2 0.5 + - - -
368K TYR* 4.1 9.2 - - + -
369K MET 3.2 19.9 + - - -
404K ILE* 3.7 23.0 - - + +
412K LEU* 4.3 4.9 - - + -
414K LEU* 3.8 28.9 - - + -
418K GLU* 4.7 1.3 - - - +
15L ARG* 3.7 12.8 - - - +
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Residues in contact with GLN 366 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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227K MET* 3.4 34.9 + - - +
231K GLY 5.1 2.2 + - - -
240K HIS* 3.4 40.6 + - - +
243K ALA* 3.3 23.1 - - - +
244K VAL* 3.8 21.4 - - + +
247K ARG* 5.5 2.5 + - + +
298K VAL* 4.3 8.5 - - + +
299K MET* 3.2 26.5 - - + +
364K ASP* 2.9 21.7 + - - +
365K PRO* 1.3 77.9 - - - +
367K ALA* 1.3 57.6 + - - +
370K LEU* 3.3 18.5 + - - +
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Residues in contact with ALA 367 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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298K VAL* 3.8 20.4 - - - +
299K MET* 4.0 17.7 - - + +
302K LEU* 3.7 8.0 - - + +
360K ASP* 3.1 27.4 - - + +
361K ARG 4.2 0.7 - - - -
364K ASP* 2.8 12.4 + - + +
366K GLN* 1.3 77.1 - - - +
368K TYR* 1.3 67.9 + - - +
369K MET 3.3 0.4 - - - -
370K LEU* 2.9 14.8 + - - +
371K ALA 3.2 9.9 + - - -
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Residues in contact with TYR 368 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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361K ARG* 3.2 70.1 + - + +
362K TYR* 3.9 17.6 - + - -
364K ASP 2.9 9.2 + - - +
365K PRO* 3.2 13.7 + - + +
367K ALA* 1.3 78.9 - - - +
369K MET* 1.3 61.5 - - - +
370K LEU 3.3 0.2 + - - -
371K ALA* 3.4 7.5 + - - +
374K ASN* 2.8 36.3 + - - -
403K ILE* 3.4 33.2 + - + -
404K ILE* 4.1 7.9 - - + -
406K GLU* 4.7 1.4 - - - +
407K GLY* 3.4 25.0 + - - -
412K LEU* 4.1 15.3 - - + -
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Residues in contact with MET 369 (chain K).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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244K VAL* 3.4 53.2 - - + +
247K ARG* 3.8 15.7 - - + -
248K ALA* 3.4 22.7 - - + +
275K ILE* 3.9 15.0 - - + -
365K PRO 3.2 3.9 + - - +
366K GLN 4.8 0.4 - - - +
368K TYR* 1.3 79.5 - - - +
370K LEU* 1.3 68.7 + - + +
374K ASN* 3.3 22.7 - - - +
375K ALA* 3.3 11.3 + - - -
378K VAL* 4.1 19.1 - - + -
400K CYS* 3.9 18.4 - - + -
403K ILE* 4.5 10.1 - - + -
404K ILE* 4.2 5.6 - - + -
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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