''Granulibacter'' is a

Gram-negative Gram-negative bacteria are bacteria that, unlike gram-positive bacteria, do not retain the crystal violet stain used in the Gram staining method of bacterial differentiation. Their defining characteristic is that their cell envelope consists ...

and non-motile bacterial genus from the family of

Acetobacteraceae Acetobacteraceae is a Family (biology), family of Gram-negative bacteria, belonging to the order Rhodospirillales, class Alphaproteobacteria. Two distinct clades are recognized: the acetic acid bacteria and a more heterogeneous group including ac ...

. Up to now there is only one species of this genus known ( Granulibacter bethesdensis).

References

Further reading