Thiopeptide:siomycin (Series a and b)  ChemDraw eXchange file 
Genotype:Type II (featuring the gene coding for quinalic acid moiety formation)
Antibiotics: Antibacterial;
Gram Nature: Gram+;
Anticancer:Inhibit oncogenic transcription factor,FoxM1 [Radhakrishnan SK, et al.,2006]
Producer Organism:Streptomyces sioyaensis ATCC 13989;
Reference: Tori, et al. (1979). 1H NMR spectral evidence for the structure and conformation of peptide antibiotic siomycin-A. J Antibiot (Tokyo). 32(10):1072-7. [PudMed:528371]  
link More details
(1) siomycin A     siomycin A JEPG file siomycin A ChemDraw eXchange file   gene cluster experimental PubChem Link 
CAS: 12656-09-6P
(2) siomycin B     siomycin B JEPG file siomycin B ChemDraw eXchange file  
CAS: 61419-19-0P
(3) siomycin C     siomycin C JEPG file siomycin C ChemDraw eXchange file  
CAS: 75524-62-8P
(4) siomycin D     siomycin D JEPG file siomycin D ChemDraw eXchange file  
CAS: 61419-61-2

structure: Structure in JEPG file
ChemDraw eXchange file: ChemDraw eXchange file
PubChem Link: PubChem Link
gene cluster: Biosynthetic gene cluster identified
experimental: Data derived from experimental literature