Rv3716c
New paper performed X-ray crystallography to determine structure of Rv3716c. Also EMSA assay found that it binds to DNA. Also they mention it's been suggested as a surrogate marker for latent TB strains.
https://doi.org/10.1016/j.bbrc.2017.11.093 https://www.sciencedirect.com/science/article/pii/S0006291X17322714?via%3Dihub#appsec1