altererythrobacter ishigakiensis altererythrobacter ishigakiensis altererythrobacter ishigakiensis is a gram-negative, non-spore-forming, halophilic and non-motile bacterium from the genus of altererythrobacter which has been isolated from the coastal area of okinawa on japan. altererythrobacter ishigakiensis produces astaxanthin. altererythrobacter ishigakiensis scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: sphingomonadales family: erythrobacteraceae genus: altererythrobacter species: a. ishigakiensis binomial name altererythrobacter ishigakiensismatsumoto et al. 2011 type strain atcc baa-2084, jpccmb0017, nbrc 107699, nite-ap48 synonyms erythrobacter ishigakiensis