Contacts of the helix formed by residues 286 - 295 (chain A) in PDB entry 4I28
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 THR 286 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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257A GLY 4.5 1.6 + - - -
284A ARG 5.8 0.4 - - - +
285A PHE* 1.3 77.0 - - - +
287A GLN* 1.3 60.3 + - - +
288A MET* 3.7 8.6 + - - +
289A GLN* 3.1 42.9 + - - +
290A LYS* 3.0 25.9 + - - +
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Residues in contact with GLN 287 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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285A PHE 4.9 0.3 - - - +
286A THR* 1.3 73.7 - - - +
288A MET* 1.3 60.8 + - - +
290A LYS* 3.3 37.9 + - + +
291A ALA* 3.2 22.0 + - - +
377A TYR* 4.1 13.2 - - + -
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Residues in contact with MET 288 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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256A PHE* 3.2 32.1 - - + +
257A GLY* 3.5 22.9 - - - -
286A THR* 3.2 8.4 + - - +
287A GLN* 1.3 78.4 - - - +
289A GLN* 1.3 56.5 + - - +
291A ALA* 3.3 4.7 + - - +
292A GLY 2.9 23.0 + - - -
377A TYR* 3.2 33.5 + - + +
379A ASP* 4.0 16.6 - - + +
405A PHE* 5.8 1.1 - - + -
2C A 4.2 13.9 - - + +
3C A 3.6 35.9 - - + +
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Residues in contact with GLN 289 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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255A VAL* 4.3 0.8 - - - +
256A PHE 3.6 6.2 - - - +
257A GLY 3.0 31.0 + - - +
258A VAL* 3.8 14.0 - - + +
262A THR* 3.7 31.3 + - - +
266A TRP* 4.5 4.3 - - - -
284A ARG 4.4 2.3 - - - +
285A PHE* 3.6 23.2 - - + -
286A THR* 3.1 44.0 + - - +
288A MET* 1.3 71.5 - - - +
290A LYS* 1.3 56.5 + - - +
292A GLY* 3.2 0.7 + - - -
293A PHE* 2.8 43.8 + - + -
2C A 4.9 1.4 - - - -
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Residues in contact with LYS 290 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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285A PHE* 3.6 38.4 + - + +
286A THR 3.0 12.0 + - - +
287A GLN* 3.3 44.8 + - + +
288A MET 3.3 0.2 - - - -
289A GLN* 1.3 75.3 - - - +
291A ALA* 1.4 51.0 + - - +
293A PHE* 3.4 6.5 + - - +
294A LEU* 2.8 36.3 + - - +
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Residues in contact with ALA 291 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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256A PHE* 4.6 0.2 - - + -
287A GLN 3.2 10.8 + - - +
288A MET 3.6 7.6 - - - +
290A LYS* 1.4 74.1 - - - +
292A GLY* 1.3 61.1 + - - +
294A LEU* 4.4 2.0 - - - -
295A TYR* 2.9 50.2 + - + +
299A LEU* 4.8 0.2 - - - +
376A LEU 5.0 1.3 - - - +
377A TYR* 3.8 24.7 - - + -
407A ILE* 4.0 18.1 - - + +
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Residues in contact with GLY 292 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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255A VAL* 3.8 7.6 - - - +
256A PHE* 3.4 39.4 + - - -
288A MET 2.9 11.1 + - - -
289A GLN 3.2 1.1 + - - -
291A ALA* 1.3 75.3 - - - +
293A PHE* 1.4 54.9 + - - +
295A TYR 3.9 0.7 - - - -
296A TYR* 3.1 33.6 + - - +
299A LEU* 4.6 4.7 - - - +
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Residues in contact with PHE 293 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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255A VAL* 3.7 34.3 - - + -
266A TRP* 4.1 12.1 - + - -
274A LEU* 4.1 13.0 - - + -
277A ILE* 3.7 22.2 - - + -
278A GLN* 3.3 50.0 - - + +
285A PHE* 3.6 34.8 - + - -
289A GLN* 2.8 32.2 + - + +
290A LYS* 3.9 5.2 - - - +
292A GLY* 1.4 70.8 - - - +
294A LEU* 1.4 66.2 + - - +
295A TYR 3.5 0.3 + - - -
296A TYR* 3.5 18.1 + + + +
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Residues in contact with LEU 294 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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290A LYS 2.8 23.1 + - - +
291A ALA* 3.3 3.8 + - - +
293A PHE* 1.4 74.3 - - - +
295A TYR* 1.3 93.6 + - + +
296A TYR 3.9 0.3 + - - -
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Residues in contact with TYR 295 (chain A).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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291A ALA* 2.9 35.1 + - + +
292A GLY 3.9 1.6 - - - -
294A LEU* 1.3 107.1 - - + +
296A TYR* 1.4 64.1 + - - +
297A GLU 3.5 2.5 - - - -
298A ASP* 3.2 9.3 + - - +
299A LEU* 3.0 30.1 + - + +
376A LEU* 3.5 49.2 + - + +
407A ILE* 4.2 12.1 - - + -
428A TRP* 3.9 24.9 - + - -
430A ALA* 3.7 26.9 - - + -
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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