haloarculaceae haloarculaceae haloarculaceae is a family of halophilic and mostly chemoorganotrophic archaea within the order halobacteriales. the type genus of this family is haloarcula. its biochemical characteristics are the same as the order halobacteriales. haloarculaceae scientific classification domain: archaea phylum: euryarchaeota class: halobacteria order: halobacteriales family: haloarculaceaegupta et al. 2016 genera halapricum haloarcula halococcoides haloglomus halomicroarcula halomicrobium halorhabdus halorientalis halosegnis halosiccatus halosimplex salinirussus the name haloarculaceae is derived from the latin term haloarcula, referring to the type genus of the family and the suffix "-ceae," an ending used to denote a family. together, haloarculaceae refers to a family whose nomenclatural type is the genus haloarcula. current taxonomy and molecular signatures as of 2021, haloarculaceae contains 10 validly published genera. this family can be molecularly distinguished from other halobacteria by the presence of 19 conserved signature proteins (csps) and seven conserved signature indels (csis) present in the following proteins: acetylglutamate kinase, ribonuclease r, metallo-beta-lactamase, trna modifying enzyme, carbamoyl phosphate synthase large subunit and hypothetical proteins. phylogeny the currently accepted taxonomy is based on the list of prokaryotic names with standing in nomenclature (lpsn) and national center for biotechnology information (ncbi). 16s rrna-based ltp_01_2022 53 marker proteins based gtdb 07-rs207 halomarina * salinirubellus * halosegnis duran-viseras et al. 2022 halocatena * haloglomus duran-viseras, sanchez-porro & ventosa 2020 natronomonas * haloarculaceae halosimplex vreeland et al. 2003 halorientalis cui et al. 2011 halapricum song et al. 2014 halococcoides sorokin et al. 2019 halorhabdus waino et al. 2000 salinibaculum * salinirussus cui et al. 2017 halovenus * halomicrobium oren et al. 2002 halomicroarcula echigo et al. 2013 (incl. halosiccatus) haloarcula torreblanca et al. 1986 haloarculaceae halomarina * haloglomus natronomonas * halorientalis halapricum halorhabdus salinirussus salinibaculum * halovenus * halosimplex halomicrobium halomicroarcula haloarcula note: * paraphyletic halobacteriaceae