cupriavidus respiraculi cupriavidus respiraculi cupriavidus respiraculi is a gram-negative, nonfermenting bacterium of the genus cupriavidus and family burkholderiaceae. it has been isolated from cystic fibrosis patients. cupriavidus respiraculi scientific classification domain: bacteria phylum: pseudomonadota class: betaproteobacteria order: burkholderiales family: burkholderiaceae genus: cupriavidus species: c. respiraculi binomial name cupriavidus respiraculivandamme and coenye 2004 type strain au3313, ccm 7175, ccug 46809, cip 108131, dsm 17358, j.j. lipuma au3313, lipuma au3313, lmg 21510, p. vandamme r-16029, vandamme r-16029, vtt e-072686 synonyms ralstonia respiraculi, wautersia respiraculi