Contacts of the helix formed by residues 324 - 328 (chain B) in PDB entry 1YKN
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 TYR 324 (chain B).
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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12A THR* 3.4 21.9 + - + +
134A GLY* 3.0 31.7 + - - -
136A ASN* 3.3 28.3 - - - -
321B THR* 2.8 14.4 + - - +
322B PRO 3.6 2.8 - - - +
323B ASP* 1.4 75.3 - - - +
325B LYS* 1.3 65.1 + - - +
326B THR* 4.1 11.2 - - - -
327B SER* 2.9 35.3 + - - -
328B ILE 4.2 0.3 + - - -
449B TRP* 3.7 29.4 - + - -
451B ASN* 4.1 1.1 - - - -
490B PRO* 4.0 23.6 + - - +
491B ILE* 3.9 16.2 - - + -
494B SER* 5.2 1.3 - - - -
550B DHB 2.3 33.3 + - - -
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Residues in contact with LYS 325 (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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322B PRO 3.8 10.5 - - - +
323B ASP* 4.0 8.3 - - - +
324B TYR* 1.3 69.6 - - - +
326B THR* 1.3 63.2 + - - +
328B ILE* 3.2 27.0 + - - +
329B ALA 4.8 0.2 + - - -
450B ARG 5.5 0.7 - - - +
451B ASN* 2.7 52.2 + - - +
452B GLY* 4.0 6.6 - - - +
199C ASP* 5.0 5.0 + - - +
335D ALA* 3.7 19.8 - - + +
336D LEU* 2.9 42.7 + - - +
338D SER* 3.3 13.1 + - - +
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Residues in contact with THR 326 (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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133A ARG* 3.5 30.9 + - + +
134A GLY* 3.5 24.2 - - - +
324B TYR* 3.0 15.0 + - - -
325B LYS* 1.3 77.4 - - - +
327B SER* 1.4 62.9 + - - +
328B ILE 3.1 0.7 + - - -
329B ALA* 4.0 2.8 + - - +
330B ARG* 3.7 35.3 + - - +
449B TRP* 5.8 1.0 - - - -
451B ASN* 4.6 0.8 + - - -
550B DHB 4.6 4.6 + - - -
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Residues in contact with SER 327 (chain B).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
134A GLY* 3.1 23.1 + - - -
136A ASN* 4.3 1.1 - - - -
319B ALA 3.6 16.1 - - - +
320B LEU* 4.7 0.4 - - - -
321B THR* 3.0 34.1 + - - -
324B TYR* 2.9 32.7 + - - -
326B THR* 1.4 56.0 - - - +
328B ILE* 1.3 59.0 + - - +
329B ALA 3.5 0.4 - - - -
330B ARG 3.3 7.2 + - - +
331B SER* 2.9 24.4 + - - -
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Residues in contact with ILE 328 (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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190A GLN* 2.8 26.5 + - - +
320B LEU* 3.8 13.0 - - + -
322B PRO* 3.8 39.0 - - + +
325B LYS* 3.3 16.8 - - + +
326B THR 3.1 1.2 - - - -
327B SER* 1.3 77.4 + - - +
329B ALA* 1.4 53.9 + - + +
330B ARG 3.4 0.2 - - - -
331B SER* 3.3 1.4 + - - -
333B ARG* 3.0 18.6 + - - +
333D ARG 3.6 22.4 - - - +
334D GLN* 4.7 11.9 - - - +
335D ALA* 3.8 28.5 - - + +
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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