A DNA-binding protein that acts in a fashion similar to H-NS, repressing gene transcription. A subset of H-NS/StpA-regulated genes require auxillary proteins for repression; these auxillary proteins (Hha and other similar proteins) may also modulate oligomerization of the H-NS/StpA complex (By similarity). Forms homodimers, can interact with H-NS. May interact with Hha and/or Cnu. Belongs to the histone-like protein H-NS family.