E coli SIN File:
  Each row denotes an interaction between two proteins.
     COLUMN 1:	Name of protein A of the interaction
     COLUMN 2:	Type of interaction
     COLUMN 3:	Name of protein B of the interaction




E coli PPI File:
  Each row denotes an interaction between two proteins.
     COLUMN 1:	Name of protein A of the interaction
     COLUMN 2:	Name of protein B of the interaction
     COLUMN 3:	Protein A uniprot
     COLUMN 4:	Protein B uniprot