“
Candidatus
Thioglobus sp.” strain NP1 is an open-ocean isolate from the SUP05 clade of
Gammaproteobacteria
. Whole-genome comparisons of strain NP1 to other sequenced isolates from the SUP05 clade indicate that it represents a new species of SUP05 that lacks the ability to fix inorganic carbon using the Calvin-Benson-Bassham cycle.