Contacts of the helix formed by residues 286 - 292 (chain B) in PDB entry 1CK4
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 LEU 286 (chain B).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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284B ALA* 3.5 22.4 - - + +
285B ILE* 1.3 78.7 - - - +
287B GLY* 1.3 63.9 + - - +
288B HIS 3.6 0.9 - - - -
289B TYR* 4.1 4.9 - - - -
290B ASN* 3.1 38.4 + - - +
296B THR* 4.0 24.5 - - + +
299B PHE* 3.7 20.2 - - + -
300B VAL* 3.8 23.3 - - + -
317B ASN* 3.5 25.6 - - - +
318B VAL 2.9 8.6 + - - +
319B SER* 3.1 12.8 - - - +
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Residues in contact with GLY 287 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
285B ILE* 3.3 8.8 - - - +
286B LEU* 1.3 79.0 - - - +
288B HIS* 1.3 56.3 + - - +
290B ASN* 3.8 2.1 - - - +
291B ARG* 2.9 39.9 + - - +
319B SER 3.0 12.0 + - - -
320B ASP* 3.9 15.3 - - - -
321B GLU* 3.9 10.3 - - - -
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Residues in contact with HIS 288 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
158B SER* 3.4 24.8 - - - +
257B ASP* 3.6 24.2 + - - +
285B ILE 5.0 0.8 + - - -
287B GLY* 1.3 74.1 - - - +
289B TYR* 1.3 69.6 + + - +
291B ARG* 3.1 38.1 + - + +
292B GLY* 2.9 23.1 + - - -
294B LEU* 4.5 17.2 - - + +
321B GLU* 4.4 2.2 + - - -
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Residues in contact with TYR 289 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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257B ASP 3.6 12.5 + - - -
258B GLY* 3.5 19.1 - - - -
259B GLU* 2.7 53.2 + - - +
285B ILE 5.3 0.2 - - - -
286B LEU* 3.7 9.3 + - - +
287B GLY 3.3 0.2 - - - -
288B HIS* 1.3 86.0 - + - +
290B ASN* 1.3 63.0 + - - +
292B GLY 3.2 2.1 + - - -
293B ASN 3.1 4.0 + - - -
294B LEU* 2.9 59.9 + - + +
295B SER 3.5 15.0 - - - -
296B THR* 3.3 31.0 - - + -
299B PHE* 3.6 16.8 - + + -
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Residues in contact with ASN 290 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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286B LEU* 3.1 36.7 + - - +
287B GLY* 4.1 1.8 - - - +
289B TYR* 1.3 75.6 - - - +
291B ARG* 1.3 65.4 + - - +
292B GLY 3.1 2.3 + - - -
293B ASN* 3.4 9.8 + - - +
294B LEU 4.6 3.3 - - - +
296B THR* 4.0 15.3 + - - +
319B SER* 4.6 7.0 + - - +
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Residues in contact with ARG 291 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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158B SER* 3.2 14.3 + - - +
160B TYR* 4.1 17.5 - - - +
161B PRO* 4.9 1.2 - - - +
287B GLY* 2.9 18.0 + - - +
288B HIS* 3.1 42.4 + - + +
290B ASN* 1.3 76.7 - - - +
292B GLY* 1.3 58.7 + - - +
293B ASN 3.9 0.3 + - - -
320B ASP* 6.3 0.9 - - - -
321B GLU* 3.0 36.7 + - - -
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Residues in contact with GLY 292 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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288B HIS* 2.9 17.3 + - - -
289B TYR 3.2 1.5 + - - -
290B ASN 3.1 0.4 - - - -
291B ARG* 1.3 79.4 - - - +
293B ASN* 1.3 69.4 + - - +
294B LEU* 3.3 17.7 + - - +
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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