Contacts of the helix formed by residues 247 - 261 (chain D) in PDB entry 1VLP


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 HIS 247 (chain D).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    244D  ASP*     2.8    33.6    +      -       -      +
    245D  TYR      3.2     0.4    -      -       -      -
    246D  LEU*     1.3    94.8    -      -       +      +
    248D  ALA*     1.3    58.8    +      -       -      +
    249D  ASN      3.4     2.0    -      -       -      -
    250D  LYS*     3.4    11.7    +      -       +      +
    251D  ASN*     2.8    49.2    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 248 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    235D  VAL*     4.5     3.8    -      -       +      +
    238D  VAL*     4.0     4.0    -      -       -      +
    239D  ALA*     3.6    31.2    -      -       +      +
    244D  ASP      3.3    17.7    +      -       -      +
    245D  TYR*     3.1    13.0    +      -       -      +
    247D  HIS*     1.3    77.8    -      -       -      +
    249D  ASN*     1.3    58.7    +      -       -      +
    251D  ASN*     3.7     6.6    -      -       -      +
    252D  ALA*     2.8    33.5    +      -       -      +
    273D  PHE*     4.2    10.5    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 249 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    235D  VAL*     3.6    24.6    -      -       -      +
    245D  TYR      4.7     1.2    +      -       -      -
    246D  LEU      5.4     0.2    +      -       -      -
    247D  HIS      3.4     0.4    -      -       -      -
    248D  ALA*     1.3    78.3    -      -       -      +
    250D  LYS*     1.3    63.3    +      -       -      +
    252D  ALA*     3.4     4.3    +      -       -      +
    253D  MSE      3.0    30.9    +      -       -      +
    269D  LEU      4.8     2.3    -      -       -      +
    270D  THR      5.1     1.6    +      -       -      +
    272D  THR*     5.1     3.1    -      -       -      -
    273D  PHE*     4.3    16.6    -      -       -      +
    274D  GLY      4.9     1.2    +      -       -      -
    277D  ASP*     3.0    29.2    +      -       -      +
    278D  PHE*     3.6    44.3    -      -       +      +
    281D  SER*     4.3     9.0    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 250 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    247D  HIS*     3.4    14.2    +      -       +      +
    248D  ALA      3.3     0.2    -      -       -      -
    249D  ASN*     1.3    76.5    -      -       -      +
    251D  ASN*     1.3    66.5    +      -       -      +
    253D  MSE      3.2    10.9    +      -       -      +
    254D  ASP*     2.9    34.3    +      -       -      +
    281D  SER*     4.1    24.0    +      -       -      -
    286D  TYR*     3.2    38.1    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 251 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    238D  VAL*     3.9    16.6    -      -       +      +
    244D  ASP*     3.9    12.9    +      -       -      +
    247D  HIS*     2.8    49.5    +      -       -      +
    248D  ALA*     3.7     5.4    -      -       -      +
    250D  LYS*     1.3    72.2    -      -       -      +
    252D  ALA*     1.3    56.7    -      -       -      +
    254D  ASP*     3.4    10.6    +      -       -      +
    255D  CYS*     3.0    36.4    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 252 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    234D  TRP*     3.0    35.4    +      -       +      +
    235D  VAL*     3.8    31.0    -      -       +      -
    238D  VAL*     4.0    12.5    -      -       +      +
    248D  ALA      2.8    18.2    +      -       -      +
    249D  ASN      3.7     4.3    -      -       -      +
    251D  ASN*     1.3    77.6    -      -       -      +
    253D  MSE      1.3    58.2    +      -       +      +
    255D  CYS*     4.7     0.4    -      -       -      -
    256D  TRP*     3.0    18.7    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with MSE 253 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    249D  ASN      3.0    17.8    +      -       -      +
    250D  LYS*     3.2     9.6    +      -       -      +
    252D  ALA*     1.3    75.3    -      -       +      +
    254D  ASP*     1.3    66.4    +      -       -      +
    256D  TRP*     3.7     0.5    -      -       -      +
    257D  ILE*     2.9    31.1    +      -       -      +
    278D  PHE*     4.0    30.5    -      -       +      -
    281D  SER*     3.7    33.2    -      -       -      +
    282D  PHE*     4.1     3.4    -      -       +      -
    286D  TYR*     3.7    45.8    -      -       +      -
    290D  TYR*     3.5    33.4    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP 254 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    250D  LYS*     2.9    32.1    +      -       -      +
    251D  ASN*     3.5    11.4    -      -       -      +
    253D  MSE      1.3    75.7    -      -       -      +
    255D  CYS*     1.3    60.9    +      -       -      +
    257D  ILE*     3.9     2.9    -      -       -      +
    258D  ASN*     2.9    44.2    +      -       -      +
    286D  TYR*     2.5    36.5    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with CYS 255 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26D  ASN*     3.9    16.7    +      -       -      +
     27D  PHE*     4.4    19.7    -      -       -      -
    234D  TRP*     3.7    21.1    -      -       +      -
    238D  VAL*     5.5     2.2    -      -       -      -
    251D  ASN*     3.0    23.6    +      -       -      +
    252D  ALA*     4.0     0.9    -      -       -      +
    253D  MSE      3.3     0.2    -      -       -      -
    254D  ASP*     1.3    76.2    -      -       -      +
    256D  TRP*     1.3    63.1    +      -       -      +
    258D  ASN*     3.5     9.9    +      -       -      +
    259D  THR*     2.8    30.8    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with TRP 256 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18D  THR*     4.0    28.3    -      -       -      -
     19D  MSE      4.1    14.6    -      -       +      -
     22D  ALA*     3.6    21.1    -      -       +      -
    229D  THR      4.9     1.1    -      -       -      -
    230D  VAL*     3.9    40.6    -      -       +      +
    234D  TRP*     3.7    27.2    -      +       +      +
    252D  ALA      3.0    17.2    +      -       -      +
    253D  MSE      3.7     3.6    -      -       -      +
    255D  CYS*     1.3    74.7    -      -       -      +
    257D  ILE*     1.3    64.7    +      -       -      +
    259D  THR*     3.0     7.1    +      -       -      -
    260D  PHE*     3.0    55.3    +      +       +      +
    264D  ASN      4.4     2.6    +      -       -      -
    265D  ALA*     3.4    36.3    +      -       -      +
    290D  TYR*     4.1    17.7    -      +       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 257 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    253D  MSE      2.9    20.4    +      -       -      +
    254D  ASP*     4.0     3.1    -      -       -      +
    256D  TRP*     1.3    79.0    -      -       -      +
    258D  ASN*     1.3    63.5    +      -       -      +
    261D  GLY*     2.8    32.5    +      -       -      +
    262D  ALA*     3.7    26.2    -      -       +      +
    265D  ALA*     4.2    18.4    -      -       +      -
    285D  PRO*     5.8     1.3    -      -       +      -
    286D  TYR*     4.0    24.7    -      -       +      -
    289D  ALA*     4.0    23.6    -      -       +      -
    290D  TYR*     4.1    14.1    -      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 258 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     26D  ASN*     5.5     2.9    -      -       -      +
    254D  ASP*     2.9    36.3    +      -       -      +
    255D  CYS*     3.8    10.8    -      -       -      +
    256D  TRP      3.3     0.2    -      -       -      -
    257D  ILE*     1.3    79.3    -      -       -      +
    259D  THR*     1.3    62.2    +      -       -      +
    261D  GLY      4.8     0.3    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 259 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     21D  ALA      4.5     0.2    -      -       -      +
     22D  ALA*     4.2     7.2    -      -       -      -
     25D  THR*     4.0    22.1    -      -       +      +
     26D  ASN*     2.7    29.6    +      -       -      -
     79D  TYR      4.3     2.4    -      -       -      +
     81D  PRO*     3.9    27.0    -      -       +      +
    255D  CYS      2.8    10.5    +      -       -      -
    256D  TRP*     3.0     9.5    +      -       -      -
    258D  ASN*     1.3    80.9    -      -       -      +
    260D  PHE*     1.3    88.7    +      -       +      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 260 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     18D  THR*     3.3    30.1    -      -       -      -
     21D  ALA*     4.1     6.7    -      -       +      -
     22D  ALA*     4.0     4.9    -      -       +      -
     79D  TYR*     3.5    47.5    -      +       +      +
     80D  LEU*     4.2     9.6    -      -       +      -
     81D  PRO*     4.0    12.8    -      -       +      -
    256D  TRP*     3.0    68.0    +      +       +      +
    257D  ILE*     5.5     0.2    -      -       -      -
    259D  THR*     1.3    99.1    -      -       +      +
    261D  GLY*     1.3    61.1    +      -       -      +
    264D  ASN*     3.1    29.9    -      -       +      +
    265D  ALA*     5.9     0.2    -      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 261 (chain D). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    257D  ILE*     2.8    24.3    +      -       -      -
    258D  ASN      4.7     1.0    +      -       -      -
    259D  THR      3.8     0.6    -      -       -      -
    260D  PHE*     1.3    75.7    -      -       -      +
    262D  ALA*     1.3    60.2    +      -       -      +
    263D  LYS*     3.2     3.1    -      -       -      -
    264D  ASN*     2.9    24.0    +      -       -      -
    265D  ALA*     3.5     5.5    +      -       -      -
----------------------------------------------------------
 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