Contacts of the strand formed by residues 293 - 297 (chain D) in PDB entry 1KHU
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 SER 293 (chain D).
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Specific contacts
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Residue Dist Surf HB Arom Phob DC
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291D SER* 2.8 22.4 + - - -
292D THR* 1.3 84.0 + - - +
294D VAL* 1.3 61.2 + - - +
295D LEU* 5.7 0.9 - - - -
307D ASN* 3.3 15.5 - - - +
335D HIS* 2.5 30.3 + - - -
336D LEU 3.6 2.2 - - - -
337D TYR* 3.8 10.1 - - - -
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Residues in contact with VAL 294 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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271D TRP* 3.7 11.0 - - + +
274D ILE* 4.4 9.4 - - + -
287D PHE* 4.4 11.4 - - + -
289D ALA* 3.7 24.0 - - + -
290D SER 5.3 0.2 - - - +
291D SER* 3.3 25.6 - - - +
293D SER* 1.3 75.0 + - - +
295D LEU* 1.3 62.4 + - - +
296D VAL* 4.7 3.6 - - + -
306D LYS 5.7 0.4 - - - +
307D ASN 3.6 7.0 - - - +
334D VAL 4.0 0.7 - - - +
335D HIS* 3.6 3.7 - - - -
336D LEU* 2.9 63.0 + - + +
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Residues in contact with LEU 295 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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293D SER* 5.7 0.7 - - - -
294D VAL* 1.3 74.4 - - - +
296D VAL* 1.3 57.4 + - - +
297D ASP* 3.8 6.5 - - + +
307D ASN* 3.0 36.2 + - - +
308D ARG* 3.1 16.4 - - + +
309D PHE* 2.6 34.7 + - - +
332D LYS 5.0 4.7 - - - +
334D VAL 3.8 2.7 - - - +
335D HIS* 3.9 28.0 - - + +
348D LEU* 4.0 25.1 - - + -
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Residues in contact with VAL 296 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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274D ILE* 4.4 8.7 - - + -
294D VAL* 4.7 3.1 - - + -
295D LEU* 1.3 75.8 - - - +
297D ASP* 1.3 58.5 + - - +
309D PHE* 3.3 34.1 - - + +
311D LEU* 3.6 25.1 - - + -
332D LYS 4.6 0.9 - - - -
333D GLY* 3.5 2.6 - - - -
334D VAL* 3.1 38.7 + - + +
336D LEU* 4.3 23.6 - - + -
416D PHE* 3.8 15.1 - - + -
436D ILE* 4.4 14.1 - - + -
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Residues in contact with ASP 297 (chain D).
Click here for Legend to table.
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Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
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295D LEU* 3.8 6.2 - - + +
296D VAL* 1.3 73.7 - - - +
298D GLY* 1.3 59.5 + - - +
299D PHE* 2.8 28.8 + - + -
308D ARG* 2.9 34.4 + - - +
309D PHE 3.1 4.6 + - - -
310D CYS* 3.1 19.1 - - - -
311D LEU* 2.8 32.4 + - - +
330D ILE* 4.0 6.1 - - - -
331D GLY 3.0 17.0 - - - +
332D LYS* 3.8 12.3 - - - +
333D GLY 4.3 0.4 - - - +
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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