Homoacetogenic Bacteria Obligate anaerobes Gram-positive CO2 as a terminal electron acceptor Acetate as the sole product of anaerobic respiration Acetyl-CoA pathway convert CO2 to acetate Typical species: Acetobacterium woodii and Clostridium aceticumHomoacetogenic Bacteria Obligate anaerobes Gram-positive CO2 as a terminal electron acceptor Acetate as the sole product of anaerobic respiration Acetyl-CoA pathway convert CO2 to acetate Typical species: Acetobacterium woodii and Clostridium aceticum