Protein SPT2 homolog (Spty2d1)

Histone chaperone that stabilizes pre-existing histone tetramers and regulates replication-independent histone exchange on chromatin. Required for normal chromatin refolding in the coding region of transcribed genes, and for the suppression of spurious transcription.

Binds DNA and histones and promotes nucleosome assembly (in vitro). Facilitates creation of tetrameric histone complexes containing histone H3 and H4 (By similarity).