Contacts of the helix formed by residues 48 - 64 (chain p) in PDB entry 6FF7


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 GLU 48 (chain p).
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47p  PRO*     1.3    67.4    -      -       -      +
     49p  VAL*     1.3    58.2    +      -       -      +
     51p  ASN*     3.0     7.1    +      -       -      +
     52p  ILE*     2.8    36.9    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 49 (chain p). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47p  PRO      3.5     0.2    -      -       -      -
     48p  GLU*     1.3    77.6    -      -       -      +
     50p  ARG*     1.3    62.2    +      -       -      +
     52p  ILE*     3.4     4.8    +      -       -      +
     53p  VAL*     3.0    25.6    +      -       -      +
     90p  TYR*     5.8     7.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 50 (chain p). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
    582M  GLN*     5.0     9.6    -      -       +      +
    585M  ASP*     4.5    21.3    -      -       +      -
     47p  PRO*     3.6    11.8    +      -       +      +
     48p  GLU      3.3     0.2    -      -       -      -
     49p  VAL*     1.3    77.9    -      -       -      +
     51p  ASN*     1.3    58.1    +      -       -      +
     53p  VAL*     3.6     6.1    -      -       -      +
     54p  ASP*     2.9    32.3    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 51 (chain p). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     47p  PRO      3.1    16.9    +      -       -      +
     48p  GLU*     3.0     8.2    +      -       -      +
     50p  ARG*     1.3    74.9    -      -       -      +
     52p  ILE*     1.3    60.8    +      -       -      +
     54p  ASP*     3.7     4.5    -      -       -      +
     55p  LYS*     2.9    33.6    +      -       -      +
    109p  PRO*     5.4     9.0    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ILE 52 (chain p). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     48p  GLU      2.8    19.5    +      -       -      +
     49p  VAL*     4.2     3.8    -      -       -      +
     51p  ASN*     1.3    72.8    -      -       -      +
     53p  VAL*     1.3    53.3    +      -       -      +
     55p  LYS*     4.6     3.8    -      -       -      -
     56p  THR*     2.8    38.4    +      -       -      -
     80p  LYS      5.0    12.3    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 53 (chain p). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     49p  VAL      3.0    18.9    +      -       -      +
     50p  ARG*     3.6     7.9    -      -       -      +
     52p  ILE*     1.3    76.2    -      -       -      +
     54p  ASP*     1.3    53.4    +      -       -      +
     56p  THR*     3.7     2.9    -      -       -      -
     57p  ALA*     2.8    38.6    +      -       -      +
     83p  PHE*     5.6    10.1    -      -       +      -
     90p  TYR*     5.7     8.5    -      -       +      -
     93p  TYR*     5.9     2.0    -      -       +      -
     94p  TYR*     4.6    23.9    -      -       +      +
     97p  LYS*     5.2     1.8    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ASP 54 (chain p). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     50p  ARG      2.9    19.5    +      -       -      +
     51p  ASN*     3.7     6.1    -      -       -      +
     53p  VAL*     1.3    76.0    -      -       -      +
     55p  LYS*     1.3    55.7    +      -       -      +
     57p  ALA*     3.4     7.1    +      -       -      +
     58p  SER*     2.9    27.8    +      -       -      -
     97p  LYS*     4.6     9.0    -      -       +      +
    109p  PRO*     5.3    11.7    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with LYS 55 (chain p). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     51p  ASN      2.9    21.2    +      -       -      +
     52p  ILE*     4.1     4.3    -      -       -      +
     54p  ASP*     1.3    70.4    -      -       -      +
     56p  THR*     1.3    66.3    +      -       -      +
     58p  SER*     3.2     8.8    +      -       -      -
     59p  PHE*     3.2    21.1    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with THR 56 (chain p). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     52p  ILE*     2.8    24.6    +      -       -      -
     53p  VAL*     3.8     3.4    -      -       -      -
     55p  LYS*     1.3    71.4    -      -       -      +
     57p  ALA*     1.3    61.9    +      -       -      +
     59p  PHE*     3.2     7.7    +      -       -      +
     60p  VAL*     3.0    25.3    +      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 57 (chain p). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     53p  VAL      2.8    21.7    +      -       -      +
     54p  ASP      3.5     2.7    -      -       -      +
     56p  THR*     1.3    72.8    -      -       -      +
     58p  SER*     1.3    51.5    +      -       -      +
     60p  VAL*     3.3     6.7    +      -       -      +
     61p  ALA*     2.7    37.9    +      -       -      +
     94p  TYR*     4.2     8.3    -      -       +      +
     97p  LYS*     3.4    31.4    -      -       +      -
     98p  VAL*     3.7    16.3    -      -       +      +
    101p  PHE*     4.9     0.9    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with SER 58 (chain p). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     54p  ASP      2.9    14.0    +      -       -      -
     55p  LYS*     3.3    13.5    -      -       -      -
     57p  ALA*     1.3    74.4    -      -       -      +
     59p  PHE*     1.3    57.3    +      -       -      +
     61p  ALA*     3.0     9.6    +      -       -      +
     62p  ARG*     2.9    29.2    +      -       -      +
    101p  PHE*     4.1    12.9    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with PHE 59 (chain p). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     55p  LYS      3.2     9.4    +      -       -      +
     56p  THR*     3.2     9.2    +      -       -      +
     58p  SER*     1.3    78.6    -      -       -      +
     60p  VAL*     1.3    57.0    +      -       -      +
     62p  ARG*     3.3     4.6    +      -       -      +
     63p  ASN*     2.9    34.0    +      -       -      +
     67p  PHE*     5.2     3.6    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with VAL 60 (chain p). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     56p  THR      3.0    17.7    +      -       -      +
     57p  ALA*     3.8     6.1    -      -       -      +
     59p  PHE*     1.3    74.4    -      -       -      +
     61p  ALA*     1.3    58.5    +      -       -      +
     64p  GLY*     2.9    43.9    +      -       -      +
     65p  PRO*     3.7     2.0    -      -       +      +
     67p  PHE*     4.3     7.4    -      -       +      +
     68p  GLU*     4.4    22.9    -      -       +      +
     98p  VAL*     5.6     6.1    -      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ALA 61 (chain p). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     57p  ALA      2.7    21.0    +      -       -      +
     58p  SER      3.0     6.0    +      -       -      +
     60p  VAL*     1.3    75.7    -      -       -      +
     62p  ARG*     1.3    61.9    +      -       -      +
     64p  GLY*     4.0     3.8    +      -       -      -
     98p  VAL*     3.3    29.6    -      -       -      +
    101p  PHE*     3.5    18.8    -      -       +      -
    102p  LYS*     3.9    17.8    -      -       -      +
----------------------------------------------------------
 Back to top of page

Residues in contact with ARG 62 (chain p). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     58p  SER      2.9    14.5    +      -       -      +
     59p  PHE*     3.9     5.4    -      -       -      +
     61p  ALA*     1.3    79.3    -      -       -      +
     63p  ASN*     1.3    61.9    +      -       -      +
     64p  GLY*     3.4     1.0    +      -       -      -
----------------------------------------------------------
 Back to top of page

Residues in contact with ASN 63 (chain p). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     59p  PHE      2.9    19.2    +      -       -      +
     62p  ARG*     1.3    72.5    -      -       -      +
     64p  GLY*     1.3    59.0    +      -       -      +
     66p  GLU*     5.0     7.1    -      -       -      +
     67p  PHE*     4.6    14.1    +      -       +      -
----------------------------------------------------------
 Back to top of page

Residues in contact with GLY 64 (chain p). Click here for Legend to table.
----------------------------------------------------------
                                  Specific contacts
                               ---------------------------
     Residue       Dist    Surf   HB    Arom    Phob    DC
----------------------------------------------------------
     60p  VAL*     2.9    21.2    +      -       -      +
     61p  ALA      4.0     3.1    +      -       -      -
     62p  ARG      3.3     4.2    +      -       -      -
     63p  ASN*     1.3    79.1    -      -       -      +
     65p  PRO*     1.3    59.0    -      -       -      +
     66p  GLU*     3.0    12.5    +      -       -      -
     67p  PHE*     3.1    16.3    +      -       -      +
----------------------------------------------------------
 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