Gramicidin S

Product name : Gramicidin S 
Synonyms : Gramoderm S;Gramicidin C;
CAS No. : 113-73-5
Formula : C60H92N12O10  
Mol. mass : 1140.7059 g/mol 
Product description :
Gramicidin S or Gramicidin Soviet is an antibiotic effective against some Gram positive and Gram negative bacteria as well as some fungi. It is a derivative of gramicidin, produced by the Gram positive bacterium Bacillus brevis. Gramicidin S is a cyclodecapeptide, constructed as two identical pentapeptides joined head to tail, formally written as cyclo(-Val-Orn-Leu-D-Phe-Pro-)2. That is to say, it forms a ring structure composed of five different amino acids, each one used twice within the structure.Another interesting point is that it utilizes two amino acids uncommon in peptides: ornithine as well as the unnatural stereoisomer of phenylalanine. It is synthesized by gramicidin S synthetase.