DNA-binding protein that induces severe bending of DNA. Required for DNA-binding by the FACT complex, a general chromatin factor that acts to reorganize nucleosomes. The FACT complex is involved in multiple processes that require DNA as a template such as mRNA elongation, DNA replication and DNA repair. Also augments the fidelity of transcription by RNA polymerase III independently of any role in the FACT complex (By similarity). Weakly associates with the stable spt16-pob3 heterodimer to form the FACT complex. Double-knockout with abo1 exacerbates the sensitivity of the abo1-knockout to methyl methanesulfonate (DNA damaging agent). Belongs to the NHP6 family.