Some isolated peptides of this protein are able to bind to human U937 monocytoblastic and A549 epithelial cell lines. Expressed in growing cells (at protein level). A member of the dormancy regulon. Induced in response to reduced oxygen tension (hypoxia), low levels of nitric oxide (NO) and carbon monoxide (CO). It is hoped that this regulon will give insight into the latent, or dormant phase of infection. Has been detected by antibody binding and Western blot in the cell wall fraction but no signal sequence is predicted by bioinformatic programs.