Contacts of the helix formed by residues 413 - 439 (chain B) in PDB entry 5YWB
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 THR 413 (chain B).
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
407B LEU 4.9 2.9 - - - -
409B MET 3.8 3.5 + - - -
410B GLY* 2.7 33.3 + - - -
411B GLU 3.3 2.0 + - - -
412B MET* 1.3 77.7 - - - +
414B ALA* 1.3 60.5 - - - +
415B GLY* 3.7 12.1 - - - +
416B GLN* 3.0 15.5 + - + +
417B ILE* 2.8 26.7 + - - +
497B LYS* 4.7 17.7 - - + +
500B ASN* 5.9 0.9 - - - +
501B GLU* 5.9 0.4 - - - +
1477B GLU* 3.2 29.1 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with ALA 414 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
407B LEU* 5.0 3.4 - - + +
412B MET 3.4 2.4 + - - -
413B THR* 1.3 73.1 - - - +
415B GLY* 1.3 64.1 + - - +
417B ILE* 3.0 3.5 + - - +
418B CYS* 3.0 28.3 + - - +
504B ARG* 5.5 3.8 - - - +
1205B ALA* 5.3 3.6 - - + +
1208B VAL* 3.6 29.9 - - + +
1209B GLU* 3.8 29.6 - - + +
1477B GLU* 5.0 1.7 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLY 415 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
413B THR* 3.3 8.3 - - - +
414B ALA* 1.3 77.8 - - - +
416B GLN* 1.3 56.5 + - - +
418B CYS* 4.0 5.2 - - - +
419B ASN* 2.9 39.6 + - - +
497B LYS* 5.7 2.9 - - - -
500B ASN* 3.6 26.9 - - - -
504B ARG* 5.7 4.2 - - - +
1477B GLU* 5.1 0.8 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with GLN 416 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
410B GLY 4.4 3.4 - - - +
411B GLU* 3.9 16.8 - - - +
413B THR* 3.0 30.6 + - - +
415B GLY* 1.3 77.2 - - - +
417B ILE* 1.3 57.1 + - + +
419B ASN* 3.5 7.6 + - - +
420B LEU* 2.9 27.4 + - + +
493B ASN* 3.3 40.2 + - - +
497B LYS* 3.8 24.3 + - + +
609B LYS* 4.2 23.4 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with ILE 417 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
399B ILE* 3.7 20.2 - - + -
402B LEU* 4.9 5.4 - - + -
407B LEU* 5.0 2.0 - - + -
411B GLU 5.0 1.6 - - - +
412B MET* 4.0 25.4 - - + +
413B THR 2.8 13.6 + - - +
414B ALA 3.0 7.5 + - - +
416B GLN* 1.3 77.3 - - + +
418B CYS* 1.3 59.0 + - - +
420B LEU* 3.1 12.0 - - + +
421B VAL* 2.9 32.5 + - + +
613B PHE* 3.7 37.9 - - + -
1204B PHE* 5.1 0.7 - - + -
1208B VAL* 3.7 37.0 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with CYS 418 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
414B ALA 3.0 18.0 + - - +
415B GLY* 4.0 5.2 - - - +
417B ILE* 1.3 75.4 - - - +
419B ASN* 1.3 67.0 + - - +
421B VAL* 3.3 6.4 + - - +
422B ALA* 3.0 26.5 + - - +
1201B LEU* 4.2 12.8 - - + +
1204B PHE* 4.2 8.7 - - - -
1205B ALA* 3.5 45.3 - - - -
1208B VAL* 5.3 3.1 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with ASN 419 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
415B GLY* 2.9 24.8 + - - +
416B GLN* 3.6 13.6 + - - +
418B CYS* 1.3 77.9 - - - +
420B LEU* 1.3 62.6 + - - +
422B ALA* 4.9 1.3 - - - -
423B ILE* 2.9 43.5 + - + +
493B ASN* 4.2 11.6 + - - +
496B LEU* 3.3 42.8 - - - +
497B LYS* 5.4 2.8 - - - +
500B ASN* 5.6 2.5 + - - +
609B LYS* 5.6 2.0 - - - +
1122B LEU* 5.1 10.9 - - - +
1126B SER* 5.6 0.9 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 420 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
395B ILE* 3.7 28.9 - - + -
416B GLN* 2.9 15.9 + - + +
417B ILE* 3.1 15.9 - - + +
419B ASN* 1.3 73.7 - - - +
421B VAL* 1.3 65.8 + - + +
423B ILE* 4.7 1.3 - - - -
424B ASP* 2.8 52.7 + - + +
609B LYS* 3.8 29.8 - - + -
610B LEU* 4.2 23.8 - - + -
613B PHE* 3.8 36.1 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with VAL 421 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
391B ILE* 5.7 1.9 - - - +
392B GLN* 4.5 19.9 - - + +
395B ILE* 3.6 26.7 - - + -
417B ILE* 2.9 18.6 + - + +
418B CYS* 3.7 7.4 - - - +
420B LEU* 1.3 74.3 - - + +
422B ALA* 1.3 64.3 + - - +
424B ASP* 4.2 0.6 - - - +
425B THR* 3.0 28.6 + - - +
1200B LEU* 5.8 1.1 - - + -
1201B LEU* 4.0 15.7 - - + -
1204B PHE* 3.5 48.5 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with ALA 422 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
418B CYS 3.0 17.4 + - - +
419B ASN* 4.2 1.8 - - - +
421B VAL* 1.3 80.7 - - - +
423B ILE* 1.3 68.7 + - + +
425B THR* 3.3 4.6 - - - -
426B ASN* 3.0 30.4 + - - +
1123B ASN* 5.4 7.9 - - - +
1197B GLN* 6.1 2.9 - - - +
1201B LEU* 4.5 23.6 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with ILE 423 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
419B ASN* 2.9 39.3 + - + +
422B ALA* 1.3 76.2 - - + +
424B ASP* 1.3 75.2 + - - +
426B ASN* 3.4 10.0 + - - +
427B GLN* 2.9 46.4 + - + +
489B LEU* 5.9 8.1 - - + -
496B LEU* 5.8 3.1 - - + -
602B LYS* 6.3 1.1 - - - -
606B SER* 4.2 6.5 - - - +
609B LYS* 3.7 20.6 - - - +
1126B SER* 5.3 8.3 - - - +
1130B ASN* 5.4 9.6 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ASP 424 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
391B ILE* 5.1 11.2 - - + -
420B LEU* 2.8 57.7 + - + +
421B VAL* 4.2 0.7 - - - +
423B ILE* 1.3 85.4 - - - +
425B THR* 1.3 65.8 - - - +
426B ASN 3.2 1.1 - - - -
427B GLN 4.3 0.2 - - - +
428B LEU* 2.9 35.6 + - + +
606B SER* 2.7 44.5 + - - +
609B LYS* 4.0 5.3 - - - +
610B LEU* 5.1 5.3 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with THR 425 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
387B LEU* 5.7 0.2 - - - +
388B ARG* 3.4 38.3 - - - +
391B ILE* 4.9 8.2 - - - +
392B GLN* 2.7 32.4 + - - +
421B VAL* 3.0 20.8 + - - +
422B ALA* 3.3 4.9 - - - +
424B ASP* 1.3 73.7 - - - +
426B ASN* 1.3 77.4 + - - +
428B LEU* 4.3 1.0 - - - +
429B MET* 3.0 32.3 + - + +
1197B GLN* 5.4 6.1 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ASN 426 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
422B ALA* 3.0 16.9 + - - +
423B ILE* 3.5 13.6 - - - +
424B ASP 3.2 0.2 - - - -
425B THR* 1.3 87.7 - - - +
427B GLN* 1.3 65.3 + - - +
429B MET* 3.7 6.2 - - - +
430B TRP* 2.8 53.0 + - + +
1127B SER* 5.6 4.2 + - - -
1197B GLN* 4.8 10.2 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with GLN 427 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
423B ILE* 2.9 42.2 + - + +
424B ASP 4.3 0.2 - - - +
426B ASN* 1.3 80.5 - - - +
428B LEU* 1.3 59.3 + - - +
430B TRP* 3.3 9.3 + - - +
431B PHE* 2.9 31.0 + - - +
489B LEU* 6.4 0.4 - - + -
598B ARG* 5.9 0.2 + - - -
599B SER* 4.9 10.0 + - - +
602B LYS* 3.2 61.4 - - + +
603B ALA* 4.6 2.0 - - - +
606B SER* 3.6 23.3 - - - +
1130B ASN* 5.8 2.4 - - - +
1135B HIS* 5.5 6.8 - - - -
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 428 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
288B TRP* 5.8 1.8 - - + -
291B LEU* 5.2 6.1 - - + -
387B LEU* 3.5 32.5 - - + +
391B ILE* 4.5 21.3 - - + -
424B ASP* 2.9 22.4 + - + +
425B THR* 4.3 1.1 - - - +
427B GLN* 1.3 76.8 - - - +
429B MET* 1.3 57.6 + - - +
431B PHE* 3.5 7.9 + - + +
432B PHE* 2.9 37.0 + - + +
603B ALA* 4.5 17.9 - - + +
606B SER* 4.8 9.4 - - - -
607B VAL* 3.9 30.7 - - + -
610B LEU* 4.7 12.1 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with MET 429 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
384B GLY 3.7 19.7 - - - +
385B ILE* 4.7 7.6 - - - -
387B LEU* 4.2 4.4 - - + +
388B ARG* 3.5 50.9 - - + +
425B THR* 3.0 20.6 + - + +
426B ASN* 3.7 5.8 - - - +
428B LEU* 1.3 76.5 - - - +
430B TRP* 1.3 71.4 + - + +
432B PHE* 3.2 2.7 + - - -
433B PHE* 2.9 65.7 + - + -
1238B SER* 5.1 4.9 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with TRP 430 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
381B ILE* 5.8 0.4 - - + -
426B ASN* 2.8 45.6 + - + +
427B GLN* 3.9 12.1 - - - +
429B MET* 1.3 86.4 - - + +
431B PHE* 1.3 63.0 + - - +
433B PHE* 3.2 43.4 + + + +
434B LEU* 3.0 31.3 + - + +
599B SER* 4.2 15.9 - - - +
1135B HIS* 4.9 19.7 + + - -
----------------------------------------------------------
Back to top of page
Residues in contact with PHE 431 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
288B TRP* 4.3 26.7 - + - -
427B GLN 2.9 12.6 + - - +
428B LEU* 4.0 8.3 - - + +
430B TRP* 1.3 75.4 - - - +
432B PHE* 1.3 84.8 + + - +
434B LEU* 4.4 4.3 - - + +
435B CYS* 2.9 54.1 + - + +
438B LEU* 5.0 7.6 - - + -
596B VAL* 6.3 0.4 - - + -
599B SER* 4.2 12.9 - - - +
600B THR* 4.2 31.4 - - + -
603B ALA* 3.5 31.9 - - + -
----------------------------------------------------------
Back to top of page
Residues in contact with PHE 432 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
288B TRP* 6.1 2.0 - - - -
291B LEU* 5.1 6.1 - - + -
292B CYS* 5.3 11.0 - - - -
295B PHE* 3.2 41.5 - + - -
299B LEU* 3.6 26.7 - - + -
380B ALA* 4.0 7.4 - - - +
383B THR* 3.5 24.5 - - + -
384B GLY* 4.3 14.4 - - - -
387B LEU* 4.6 14.4 - - + -
428B LEU* 2.9 22.3 + - + +
429B MET 3.6 3.6 - - - +
430B TRP 3.2 0.2 - - - -
431B PHE* 1.3 99.5 - + - +
433B PHE* 1.3 64.3 + - - +
435B CYS* 4.5 6.7 - - + -
436B PRO* 3.4 16.4 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with PHE 433 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
377B TYR* 5.3 11.5 - - + -
380B ALA* 3.8 16.4 - - + +
381B ILE* 3.5 52.5 - - + -
384B GLY* 3.7 18.4 - - - -
385B ILE* 4.9 2.2 - - + -
429B MET* 2.9 47.4 + - + -
430B TRP* 3.2 42.8 + + + +
432B PHE* 1.3 84.4 - - - +
434B LEU* 1.3 65.5 + - + +
435B CYS 3.4 0.4 - - - -
436B PRO* 3.6 10.0 - - - +
437B ASN* 4.4 5.4 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 434 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
377B TYR* 6.3 3.1 - - + -
430B TRP* 3.0 18.7 + - + +
431B PHE* 3.3 6.7 + - + +
433B PHE* 1.3 81.5 - - + +
435B CYS* 1.3 63.0 + - - +
436B PRO 3.5 0.2 - - - -
437B ASN* 3.4 24.5 + - + +
438B LEU* 3.3 24.6 + - - +
595B SER* 5.0 3.6 - - - +
596B VAL* 4.2 33.2 - - + +
599B SER* 4.0 26.7 - - - +
----------------------------------------------------------
Back to top of page
Residues in contact with CYS 435 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
299B LEU* 5.3 11.9 - - + -
431B PHE* 2.9 43.2 + - + +
432B PHE* 4.5 7.6 - - + -
434B LEU* 1.3 73.1 - - - +
436B PRO* 1.3 67.4 - - + +
437B ASN 3.1 1.3 - - - -
438B LEU* 3.2 19.6 + - - +
439B TRP* 2.9 48.8 + - - -
----------------------------------------------------------
Back to top of page
Residues in contact with PRO 436 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
299B LEU* 3.6 26.9 - - + -
302B SER* 3.6 16.8 - - - +
303B SER* 5.0 7.0 - - - +
306B ARG* 4.2 14.1 - - - +
376B SER* 5.0 8.1 - - - +
380B ALA* 3.7 24.5 - - + -
432B PHE 3.4 15.5 - - - +
433B PHE 3.6 7.2 - - - +
435B CYS* 1.3 95.6 - - + +
437B ASN* 1.3 60.2 + - - +
439B TRP* 3.5 16.5 + - + +
440B ALA* 3.8 6.1 + - - +
----------------------------------------------------------
Back to top of page
Residues in contact with ASN 437 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
306B ARG* 4.1 24.9 + - - +
377B TYR* 4.7 21.1 + - + +
433B PHE 4.4 4.1 + - - +
434B LEU* 3.4 32.0 + - + +
435B CYS 3.1 0.8 - - - -
436B PRO* 1.3 80.2 - - - +
438B LEU* 1.3 60.6 + - - +
440B ALA* 3.6 11.4 + - - +
441B MET* 3.8 7.6 + - - +
592B LEU* 3.8 29.4 - - - +
596B VAL* 5.2 5.8 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with LEU 438 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
431B PHE* 5.0 8.7 - - + -
434B LEU* 3.3 11.3 + - + +
435B CYS* 3.3 22.9 - - + +
437B ASN* 1.3 74.5 - - - +
439B TRP* 1.3 74.8 + - + +
440B ALA 2.9 10.3 + - - -
441B MET* 3.3 27.9 + - + +
442B PRO* 3.4 11.6 - - - +
596B VAL* 3.7 32.5 - - + +
600B THR* 4.8 6.1 - - + +
----------------------------------------------------------
Back to top of page
Residues in contact with TRP 439 (chain B).
Click here for Legend to table.
----------------------------------------------------------
Specific contacts
---------------------------
Residue Dist Surf HB Arom Phob DC
----------------------------------------------------------
299B LEU* 6.2 4.0 - - + -
303B SER* 4.5 18.6 - - - -
307B ILE* 4.4 9.2 - - - +
435B CYS* 2.9 43.7 + - - +
436B PRO* 3.5 11.4 + - + +
437B ASN 3.4 0.6 - - - -
438B LEU* 1.3 84.2 - - + +
440B ALA* 1.3 56.3 + - - +
442B PRO* 4.3 8.3 - - + +
443B VAL* 4.3 6.9 - - - +
----------------------------------------------------------
Back to top of page
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
------------------------------------------------------------
Atomic class I II III IV V VI VII VIII
------------------------------------------------------------
I (Hydrophilic) + + + - + + + +
II (Acceptor) + - + - + + + -
III (Donor) + + - - + + - +
IV (Hydrophobic) - - - + + + + +
V (Aromatic) + + + + + + + +
VI (Neutral) + + + + + + + +
VII (Neutral-donor) + + - + + + - +
VIII (Neutral-acceptor) + - + + + + + -
------------------------------------------------------------
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