Contacts of the helix formed by residues 328 - 336 (chain A) in PDB entry 1K89
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 328 (chain A).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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327A ASP* 1.3 74.6 - - - +
329A GLU* 1.3 56.3 + - - +
331A ALA 3.0 1.6 + - - -
332A LYS* 2.8 68.7 + - - +
353A GLU* 4.2 29.6 + - + +
354A ALA* 3.7 10.4 - - - +
357A PHE* 3.7 40.8 - - + -
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Residues in contact with GLU 329 (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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327A ASP* 3.0 21.4 - - - +
328A LEU* 1.3 79.1 - - - +
330A GLN* 1.3 65.6 + - - +
332A LYS* 4.0 6.7 + - - +
333A LYS* 2.8 55.0 + - - +
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Residues in contact with GLN 330 (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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308A LYS* 4.0 24.2 + - + +
310A TRP* 3.5 42.7 - - + +
311A GLY 4.9 0.2 - - - +
325A ASP 4.0 6.7 - - - +
326A VAL* 4.0 8.3 - - + -
327A ASP* 2.9 32.4 + - - +
329A GLU* 1.3 96.2 - - - +
331A ALA* 1.3 60.9 + - - +
332A LYS 3.3 0.2 - - - -
333A LYS* 3.2 23.6 + - - +
334A ILE* 2.9 32.6 + - - +
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Residues in contact with ALA 331 (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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326A VAL* 3.9 5.5 - - + +
327A ASP 2.7 13.0 + - - +
328A LEU* 3.5 7.6 - - - +
330A GLN* 1.3 77.5 - - - +
332A LYS* 1.3 51.3 + - - +
334A ILE* 3.0 9.7 + - - +
335A VAL* 2.6 40.9 + - - +
354A ALA* 4.0 16.8 - - + -
357A PHE* 3.7 21.3 - - + -
358A LEU* 4.0 16.4 - - + -
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Residues in contact with LYS 332 (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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328A LEU* 2.8 58.7 + - + +
329A GLU* 4.3 6.7 - - - +
330A GLN 3.3 0.2 - - - -
331A ALA* 1.3 72.1 - - - +
333A LYS* 1.3 58.2 + - + +
335A VAL* 3.5 2.6 - - - +
336A ALA* 2.8 33.0 + - - +
357A PHE* 4.0 22.0 - - + -
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Residues in contact with LYS 333 (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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310A TRP 4.1 10.3 - - - +
311A GLY* 4.5 14.1 - - - -
329A GLU* 2.8 49.1 + - - +
330A GLN* 3.2 29.3 + - - +
332A LYS* 1.3 73.1 - - + +
334A ILE* 1.3 66.7 + - - +
336A ALA* 3.6 7.2 + - - +
337A ASN* 3.1 27.9 + - - +
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Residues in contact with ILE 334 (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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310A TRP* 3.7 26.2 - - + +
317A ILE* 4.0 24.0 - - + -
326A VAL* 4.5 11.0 - - + -
330A GLN 2.9 17.6 + - - +
331A ALA* 3.2 10.3 - - - +
333A LYS* 1.3 78.0 - - - +
335A VAL* 1.3 63.4 + - - +
337A ASN* 3.1 10.3 + - - -
338A ASN 3.4 1.7 + - - -
339A VAL* 3.3 34.1 + - + +
342A TYR* 3.7 31.2 - - + -
358A LEU* 4.5 3.1 - - + -
364A MET* 4.0 24.2 - - + -
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Residues in contact with VAL 335 (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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331A ALA 2.6 17.6 + - - +
332A LYS* 3.5 5.2 - - - +
334A ILE* 1.3 69.4 - - - +
336A ALA* 1.3 56.8 + - - +
337A ASN 3.0 4.3 - - - -
338A ASN* 2.8 31.9 + - - +
339A VAL 5.4 0.9 - - - +
357A PHE* 3.0 41.5 - - + -
358A LEU* 4.0 13.9 - - + -
361A GLN* 3.9 25.6 - - + +
364A MET* 4.9 6.5 - - - -
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Residues in contact with ALA 336 (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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313A LYS* 4.9 3.1 + - - -
332A LYS 2.8 21.9 + - - +
333A LYS* 3.8 8.1 - - - +
335A VAL* 1.3 73.7 - - - +
337A ASN* 1.3 62.4 + - - +
338A ASN* 3.2 9.6 + - - +
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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