Plays an active role in transcriptional regulation by binding modified histones H3 and H4 (PubMed:28533407, PubMed:27775714). Is a negative regulator of myeloid differentiation of hematopoietic progenitor cells (PubMed:28533407). Might also have a role in the development and maturation of lymphoid cells (By similarity). Involved in the regulation of non-canonical NF-kappa-B pathway (PubMed:20460684). Interacts with the nucleosomes, in particular nucleosomes bearing histone H3 crotonylated at 'Lys-14' (H3K14cr) for which DPF2 has high affinity (PubMed:27775714). Also interacts (via PHD-type zinc finger domains) with histone H3 butyrylated at 'Lys-14' (H3K14bu), histone H3 propionylated at 'Lys-14' (H3K14pr), and histone H3 acetylated at 'Lys-14' (H3K14ac) (PubMed:29429572, PubMed:28533407, PubMed:27775714). Interacts with histone H3 acetylated at 'Lys-9' (H3K9ac), histone H3 di-methylated at 'Lys-9' (H3K9me2), and histone H3 tri-methylated at 'Lys-9' (H3K9me3) (PubMed:29429572). Interacts with histone H4 acetylated at 'Lys-12' (H4K12ac) (PubMed:29429572). Interacts with histone H4 acetylated at 'Lys-16' (H4K16ac) (PubMed:28533407). Interacts with SWI/SNF complex components (PubMed:20460684, PubMed:28533407). Interacts with SMARCA2, SMARCA4, SMARCB1 and SMARCD1 (PubMed:20460684). Interacts with SMARCC1, SMARCC2 and ACTL6A (PubMed:28533407). Interacts with RUNX1 (PubMed:28533407). Ubiquitous. The disease is caused by variants affecting the gene represented in this entry. Belongs to the requiem/DPF family.