Contacts of the helix formed by residues 292 - 295 (chain A) in PDB entry 2CAN
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 LYS 292 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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1A CAN 4.0 0.7 - - - -
2A PLP 2.8 54.3 + - - +
85A TYR* 3.0 37.2 - - - +
86A SER 3.9 3.1 - - - +
87A ALA* 3.6 25.0 - - + +
142A GLY* 5.9 1.8 - - - +
265A ILE* 3.4 27.2 - - + +
266A GLN* 4.1 6.7 - - - -
291A GLY* 1.3 68.0 - - - +
293A ALA* 1.3 61.5 + - - +
294A LEU* 3.1 5.4 + - - +
295A SER* 3.6 6.1 + - - -
301A VAL 4.1 4.8 + - - +
322B THR* 2.8 27.1 + - + -
323B TYR* 2.9 32.3 + - + -
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Residues in contact with ALA 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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86A SER 3.5 17.0 + - - +
87A ALA 3.1 15.9 + - - +
89A ASN* 3.6 28.9 - - + +
90A GLN* 3.2 17.7 + - - +
265A ILE 4.9 0.2 + - - -
268A GLY 5.5 0.2 - - - +
269A LEU* 3.6 17.7 - - + +
291A GLY 2.7 4.8 + - - -
292A LYS* 1.3 73.5 - - - +
294A LEU* 1.3 55.8 + - - -
295A SER 2.9 11.9 + - - -
296A GLY 3.1 7.5 + - - -
336A ALA* 4.0 0.3 - - - +
340A LEU* 4.7 0.7 - - + +
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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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123A TYR* 3.5 23.1 - - - +
127A ILE* 4.3 7.0 - - + -
269A LEU* 3.4 13.1 - - + +
290A LEU* 4.5 11.0 - - + -
291A GLY* 2.9 16.1 + - - +
292A LYS 3.1 1.2 - - - -
293A ALA* 1.3 75.3 - - - +
295A SER* 1.3 57.1 + - - +
301A VAL* 3.7 34.1 - - + +
302A SER* 4.0 15.7 - - - -
303A ALA* 4.1 6.3 - - + +
333A ALA* 3.2 23.4 - - + +
336A ALA* 3.4 6.5 - - - +
337A LEU* 3.9 36.1 - - + +
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Residues in contact with SER 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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97A ILE* 3.5 18.4 - - - +
292A LYS 3.6 1.3 + - - -
293A ALA 2.9 0.2 - - - -
294A LEU* 1.3 78.8 - - - +
296A GLY* 1.3 61.4 + - - +
297A GLY 3.1 3.3 + - - -
298A LEU* 3.3 9.0 + - - +
299A TYR 2.5 34.2 + - - -
301A VAL* 4.1 8.6 + - - -
332A VAL* 3.8 22.7 - - - +
336A ALA* 3.7 10.5 - - - -
323B TYR* 2.9 17.8 + - - -
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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