Contacts of the helix formed by residues 412 - 433 (chain V) in PDB entry 1UW9


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.
For CSU analysis of other PDB entry

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 GLY 412 (chain V).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     77C  LYS      5.4     0.2    -      -       -      -
     78C  LEU*     3.8    24.0    -      -       -      +
     70O  TRP*     3.9     6.5    -      -       -      -
    406V  THR      4.3     3.4    -      -       -      -
    409V  HIS*     3.2    16.5    +      -       -      +
    410V  PRO      3.5     1.0    +      -       -      -
    411V  TRP*     1.3    81.8    -      -       -      +
    413V  ASN*     1.3    60.0    +      -       -      -
    414V  ALA      3.5     2.0    -      -       -      -
    415V  PRO*     3.3     2.7    -      -       -      +
    416V  GLY      3.0    23.4    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 413 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     78C  LEU*     5.1     0.2    -      -       -      +
     70O  TRP*     2.7    36.8    +      -       -      +
    188V  ALA*     3.1    40.4    +      -       -      +
    191V  GLU*     3.6    20.3    -      -       +      +
    192V  CYS*     3.5    22.1    -      -       -      +
    406V  THR*     3.5     9.5    -      -       -      +
    407V  LEU*     3.4    23.1    -      -       -      +
    412V  GLY*     1.3    69.4    -      -       -      -
    414V  ALA*     1.3    60.9    +      -       -      +
    415V  PRO*     4.1     0.2    -      -       -      +
    416V  GLY      3.3     0.2    +      -       -      -
    417V  ALA*     2.8    30.7    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 414 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    191V  GLU*     3.1    24.7    +      -       -      +
    194V  ARG*     3.7    37.0    -      -       +      +
    195V  GLY*     3.5    12.0    -      -       -      -
    413V  ASN*     1.3    77.4    -      -       -      +
    415V  PRO*     1.3    66.2    -      -       +      +
    417V  ALA      3.3     1.2    +      -       -      -
    418V  ALA*     2.9    27.1    +      -       -      +
      4W  TRP*     3.8    12.3    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with PRO 415 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    409V  HIS*     3.8    10.0    +      -       +      -
    411V  TRP*     3.5    39.0    -      -       +      +
    412V  GLY      3.3    12.8    -      -       -      +
    414V  ALA*     1.3    94.0    -      -       +      +
    416V  GLY*     1.3    55.7    +      -       -      +
    418V  ALA*     3.4     2.9    +      -       +      +
    419V  ALA*     2.9    30.1    +      -       -      +
    454V  GLU*     3.6    24.4    -      -       +      +
      2W  MET      3.7    14.6    -      -       -      +
      3W  VAL*     5.3     0.7    -      -       -      -
      4W  TRP*     4.6    10.7    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 416 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    405V  GLY      4.4     1.7    -      -       -      +
    406V  THR*     3.9    13.5    -      -       -      -
    409V  HIS*     3.5    30.2    -      -       -      -
    412V  GLY      3.0    12.0    +      -       -      -
    413V  ASN      3.6     3.1    -      -       -      -
    414V  ALA      3.3     0.2    -      -       -      -
    415V  PRO*     1.3    75.9    -      -       -      +
    417V  ALA*     1.3    60.7    +      -       -      +
    419V  ALA*     3.3     4.3    +      -       -      +
    420V  ASN*     3.2    27.6    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 417 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    192V  CYS      3.0    27.6    -      -       -      +
    195V  GLY*     3.5    12.8    -      -       -      -
    196V  GLY*     4.7     0.3    -      -       -      -
    197V  LEU*     3.5    27.0    -      -       +      +
    406V  THR*     3.6     4.0    -      -       -      +
    413V  ASN      2.8    17.7    +      -       -      +
    414V  ALA      3.6     4.3    -      -       -      +
    416V  GLY*     1.3    70.1    -      -       -      +
    418V  ALA*     1.3    59.5    +      -       -      +
    420V  ASN*     3.2     5.2    +      -       -      +
    421V  ARG*     2.9    29.3    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 418 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    195V  GLY      3.1    15.2    +      -       -      +
    414V  ALA      2.9    17.6    +      -       -      +
    415V  PRO      3.5     5.8    -      -       -      +
    417V  ALA*     1.3    75.0    -      -       -      +
    419V  ALA*     1.3    57.6    +      -       -      +
    421V  ARG*     3.8     2.3    -      -       -      +
    422V  VAL*     2.8    38.0    +      -       +      +
    454V  GLU*     4.2     5.8    -      -       +      -
      4W  TRP*     3.5    39.3    -      -       +      -
     17W  TYR*     4.8     1.8    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 419 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    384V  VAL*     4.1     4.9    -      -       +      -
    409V  HIS*     4.2     2.5    -      -       +      -
    415V  PRO      2.9    16.7    +      -       -      +
    416V  GLY      3.5     6.5    -      -       -      +
    417V  ALA      3.3     0.2    -      -       -      -
    418V  ALA*     1.3    75.6    -      -       -      +
    420V  ASN*     1.3    56.9    +      -       -      +
    422V  VAL*     3.5     1.4    +      -       -      +
    423V  ALA*     2.9    29.6    +      -       -      +
    454V  GLU*     3.6    22.6    -      -       -      +
    455V  LEU*     3.8    23.5    -      -       -      +
    458V  ALA*     3.9    16.8    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 420 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    170V  LEU*     3.9     4.3    -      -       +      -
    197V  LEU*     4.5     9.1    -      -       +      +
    384V  VAL*     3.4    25.0    -      -       -      +
    387V  MET*     3.3    13.4    -      -       +      +
    402V  PHE*     3.5    42.8    -      -       +      +
    405V  GLY      3.2    13.1    +      -       -      +
    406V  THR*     3.1    25.1    +      -       -      -
    416V  GLY      3.2    11.0    +      -       -      +
    417V  ALA*     3.2     6.5    +      -       -      +
    419V  ALA*     1.3    76.0    -      -       -      +
    421V  ARG*     1.3    58.2    +      -       -      +
    423V  ALA      3.4     0.3    +      -       -      -
    424V  LEU*     3.0    25.8    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 421 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    167V  ARG*     3.5    28.5    -      -       -      +
    170V  LEU*     3.4    20.6    -      -       +      +
    196V  GLY*     2.9    32.8    +      -       -      +
    198V  ASP*     4.4     1.0    +      -       -      -
    234V  GLU*     2.9    41.2    +      -       -      -
    417V  ALA      2.9    16.3    +      -       -      +
    418V  ALA      3.8     3.4    -      -       -      +
    420V  ASN*     1.3    73.6    -      -       -      +
    422V  VAL*     1.3    67.1    +      -       -      +
    424V  LEU*     3.4     1.1    +      -       -      +
    425V  GLU*     2.7    58.8    +      -       -      +
     13W  GLU      3.2    17.4    +      -       -      -
     17W  TYR*     3.3    37.3    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 422 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    418V  ALA*     2.8    24.4    +      -       +      +
    419V  ALA*     3.8     4.0    -      -       -      +
    421V  ARG*     1.3    75.2    -      -       -      +
    423V  ALA*     1.3    64.4    +      -       -      +
    425V  GLU*     3.2     3.3    +      -       -      +
    426V  ALA*     2.9    22.9    +      -       -      +
    448V  ALA*     4.2     1.8    -      -       +      -
    451V  TRP*     3.4    31.4    -      -       +      -
    452V  SER*     3.9    19.7    -      -       -      +
    454V  GLU*     6.2     0.2    -      -       +      -
    455V  LEU*     3.8    20.6    -      -       +      -
      4W  TRP*     5.6     3.4    -      -       +      -
     17W  TYR*     3.6    32.8    -      -       +      +
     18W  LEU*     4.2     0.9    -      -       -      +
    138W  ARG*     5.3     1.8    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 423 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    384V  VAL*     4.3     7.2    -      -       +      +
    387V  MET*     3.7    18.6    -      -       +      -
    419V  ALA      2.9    18.9    +      -       -      +
    420V  ASN      3.7     4.3    -      -       -      +
    422V  VAL*     1.3    76.5    -      -       -      +
    424V  LEU*     1.3    63.5    +      -       -      +
    426V  ALA*     3.8     3.1    -      -       -      +
    427V  CYS*     3.0    29.3    +      -       -      -
    445V  ILE*     3.9    23.3    -      -       +      -
    455V  LEU*     4.2    15.5    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LEU 424 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    167V  ARG*     4.0    15.9    -      -       +      +
    168V  GLY*     3.1    36.8    -      -       -      +
    169V  LEU      4.9     0.2    -      -       -      +
    170V  LEU*     3.6    27.1    -      -       +      -
    387V  MET*     3.7    13.6    -      -       +      +
    391V  VAL*     3.7    24.7    -      -       +      -
    400V  LEU*     4.0    15.9    -      -       +      -
    420V  ASN      3.0    17.8    +      -       -      +
    421V  ARG*     3.8     4.3    -      -       -      +
    423V  ALA*     1.3    77.4    -      -       -      +
    425V  GLU*     1.3    59.0    +      -       -      +
    427V  CYS*     3.3     2.4    +      -       -      +
    428V  THR*     2.8    40.5    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 425 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    167V  ARG*     3.9    11.4    -      -       -      +
    421V  ARG*     2.7    59.9    +      -       -      +
    422V  VAL*     4.0     1.3    -      -       -      +
    424V  LEU*     1.3    74.1    -      -       +      +
    426V  ALA*     1.3    60.2    +      -       -      +
    428V  THR*     3.6     7.0    -      -       -      -
    429V  GLN*     2.8    31.7    +      -       -      +
     13W  GLU      3.5     1.0    -      -       -      +
     14W  THR*     3.7     3.6    -      -       +      -
     15W  PHE*     3.0    34.3    +      -       +      +
     16W  SER      3.9     0.2    +      -       -      -
     17W  TYR*     2.8    33.1    +      -       -      +
     18W  LEU*     3.7    19.0    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 426 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    422V  VAL      2.9    16.9    +      -       -      +
    423V  ALA*     3.8     4.7    -      -       -      +
    425V  GLU*     1.3    76.2    -      -       -      +
    427V  CYS*     1.3    57.1    +      -       -      +
    429V  GLN*     3.4     7.7    +      -       -      +
    430V  ALA*     2.9    30.8    +      -       -      +
    444V  VAL*     3.6    16.0    -      -       +      +
    445V  ILE*     5.5     1.1    -      -       +      -
    448V  ALA*     4.0    25.8    -      -       +      -
    451V  TRP*     5.1     0.9    -      -       +      -
     18W  LEU*     3.5    14.2    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with CYS 427 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    387V  MET*     3.9     3.6    -      -       +      -
    388V  PRO*     3.6    43.3    -      -       -      -
    391V  VAL*     4.1    17.9    -      -       +      -
    423V  ALA      3.0    20.8    +      -       -      +
    424V  LEU      3.6     3.4    -      -       -      +
    426V  ALA*     1.3    75.0    -      -       -      +
    428V  THR*     1.3    58.0    +      -       -      +
    430V  ALA*     3.4     2.1    +      -       -      +
    431V  ARG*     2.9    30.5    +      -       -      +
    437V  LEU*     3.7    16.5    -      -       +      +
    444V  VAL*     4.1    10.1    -      -       -      -
    445V  ILE*     3.9    11.4    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 428 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    166V  GLY      3.3    26.9    -      -       -      +
    167V  ARG*     4.2    10.0    -      -       +      +
    168V  GLY      5.0     0.2    +      -       -      -
    391V  VAL*     4.7     7.3    -      -       -      +
    396V  ASP*     4.4     3.0    +      -       -      +
    424V  LEU*     2.8    35.4    +      -       -      +
    425V  GLU*     3.6     7.6    -      -       -      -
    426V  ALA      3.3     0.2    -      -       -      -
    427V  CYS*     1.3    74.0    -      -       -      +
    429V  GLN*     1.3    59.0    +      -       -      +
    431V  ARG*     3.4    23.8    +      -       -      +
    432V  ASN*     3.0    37.1    +      -       -      +
     15W  PHE*     4.0    15.3    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLN 429 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    425V  GLU      2.8    21.2    +      -       -      +
    426V  ALA*     3.7     6.6    -      -       -      +
    428V  THR*     1.3    71.7    -      -       -      +
    430V  ALA*     1.3    57.0    +      -       -      +
    432V  ASN*     3.2     4.3    +      -       -      +
    433V  GLU*     2.9    49.1    +      -       -      +
     15W  PHE*     3.7    15.1    -      -       +      -
     18W  LEU*     3.6    22.2    -      -       +      +
     21W  LEU*     3.3    31.9    -      -       +      +
     25W  GLN*     3.6    23.1    +      -       -      +
     29W  GLN*     4.0    10.0    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 430 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    426V  ALA      2.9    17.5    +      -       -      +
    427V  CYS      3.6     4.7    -      -       -      +
    429V  GLN*     1.3    76.0    +      -       -      +
    431V  ARG*     1.3    62.4    +      -       -      +
    433V  GLU*     3.1    20.1    +      -       -      +
    434V  GLY      3.3     0.2    +      -       -      -
    435V  ARG*     3.0    38.8    +      -       +      +
    437V  LEU*     4.3     3.8    -      -       +      -
    444V  VAL*     3.6    31.6    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 431 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    166V  GLY      4.4     0.6    +      -       -      -
    391V  VAL*     4.0    20.0    +      -       -      +
    395V  GLY*     4.4     5.7    -      -       -      -
    396V  ASP*     2.8    49.2    +      -       -      +
    427V  CYS      2.9    16.9    +      -       -      +
    428V  THR*     3.5    17.5    -      -       -      +
    430V  ALA*     1.3    74.0    -      -       -      +
    432V  ASN*     1.3    85.1    +      -       -      +
    434V  GLY*     2.9    21.0    +      -       -      -
    435V  ARG      3.9    13.0    +      -       -      +
    437V  LEU*     3.9    19.2    -      -       +      +
     32W  TYR*     3.3    23.5    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 432 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    166V  GLY      5.0     1.9    -      -       -      +
    428V  THR*     3.0    14.9    +      -       -      +
    429V  GLN      3.5     4.9    -      -       -      +
    431V  ARG*     1.3   112.3    +      -       -      +
    433V  GLU*     1.3    60.3    +      -       -      +
    434V  GLY*     3.2     0.9    +      -       -      -
     15W  PHE*     3.8    10.4    -      -       -      -
     28W  ALA      4.1     5.2    -      -       -      +
     29W  GLN*     2.9    34.0    +      -       -      +
     32W  TYR*     3.1    52.0    -      -       +      +
    119W  MET*     5.3     5.2    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with GLU 433 (chain V). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    429V  GLN*     2.9    41.1    +      -       -      +
    430V  ALA*     3.1    16.6    +      -       -      +
    432V  ASN*     1.3    76.0    -      -       -      +
    434V  GLY*     1.3    57.8    +      -       -      +
    435V  ARG*     3.5    15.3    +      -       +      +
     25W  GLN*     3.9    20.6    -      -       -      +
     28W  ALA*     3.9    26.7    -      -       +      +
     29W  GLN*     4.4     6.0    -      -       -      +
----------------------------------------------------------
 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