Gramicidin d

Gramcidin D is a heterogeneous mixture of three antibiotic compounds, gramicidins A, B and C, making up 80%, 6%, and 14% respectively all of which are obtained from the soil bacterial species Bacillus brevis and called collectively gramicidin D. Gramcidins are 15 residue peptides with alternating D and L amino acids, which assemble inside of the hydrophobic interior of the cellular lipid bilayer to form a β-helix. Active against most Gram-positive bacteria and some Gram-negative organisms, Gramicidin D is used mainly as a topical antibiotic and is also found in Polysporin ophthalmic solution. Its therapeutic use is listed as anti-infectives. The directory classifies it as a commercial API with a fermentation-derived source/manufacturing origin. Other names for this substance include Gramicidine, Bacillus brevis gramicidin D and Linear Gramicidin. Its PubChem CID is 45267103.

CAS No 1405-97-6
Molecular Formula C96H135N19O16
Molecular Weight 1811.2 g/mol
Synonyms (2R)-2-[[2-[[(2S)-2-formamido-3-methylbutanoyl]amino]acetyl]amino]-N-[(2S)-1-[[(2R)-1-[[(2S)-1-[[(2R)-1-[[(2S)-1-[[(2R)-1-[[(2S)-1-[[(2R)-1-[[(2S)-1-[[(2R)-1-[[(2S)-1-(2-hydroxyethylamino)-3-(1H-indol-3-yl)-1-oxopropan-2-yl]amino]-4-methyl-1-oxopentan-2-yl]amino]-3-(1H-indol-3-yl)-1-oxopropan-2-yl]amino]-4-methyl-1-oxopentan-2-yl]amino]-3-(1H-indol-3-yl)-1-oxopropan-2-yl]amino]-4-methyl-1-oxopentan-2-yl]amino]-3-(1H-indol-3-yl)-1-oxopropan-2-yl]amino]-3-methyl-1-oxobutan-2-yl]amino]-3-methyl-1-oxobutan-2-yl]amino]-3-methyl-1-oxobutan-2-yl]amino]-1-oxopropan-2-yl]-4-methylpentanamide

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