steroidobacter flavus steroidobacter flavus steroidobacter flavus is a microcystin-degrading bacterium from the genus of steroidobacter which has been isolated from forest soil from the hainan island in china. steroidobacter flavus scientific classification domain: bacteria phylum: pseudomonadota class: gammaproteobacteria order: nevskiales family: steroidobacteraceae genus: steroidobacter species: s. flavus binomial name steroidobacter flavus type strain cgmcc 1.10759, cpcc 100154, dsm 23339